CORPORATE OFFICE PROPERTIES TRUST INC
S-4, 1998-02-05
REAL ESTATE INVESTMENT TRUSTS
Previous: MEDICIS PHARMACEUTICAL CORP, S-3MEF, 1998-02-05
Next: WAHLCO ENVIRONMENTAL SYSTEMS INC, S-1/A, 1998-02-05



<PAGE>
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 5, 1998
 
                                                      REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                    FORM S-4
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                       CORPORATE OFFICE PROPERTIES TRUST
             (Exact name of Registrant as specified in its charter)
 
<TABLE>
<S>                                       <C>                                       <C>
                MARYLAND                                    6798                                   23-2947217
    (State or other jurisdiction of             (Primary Standard Industrial                     (IRS Employer
     incorporation or organization)             Classification Code Number)                   Identification No.)
</TABLE>
 
                            ------------------------
 
                                ONE LOGAN SQUARE
                                   SUITE 1105
                             PHILADELPHIA, PA 19103
                                 (215) 567-1800
         (Address, including zip code, and telephone number, including
            area code, of Registrant's principal executive offices)
                         ------------------------------
 
                              CLAY W. HAMLIN, III
                       CORPORATE OFFICE PROPERTIES TRUST
                                ONE LOGAN SQUARE
                                   SUITE 1105
                             PHILADELPHIA, PA 19103
                                 (215) 567-1800
      (Name, address, including zip code, and telephone number, including
                        area code, of agent for service)
                         ------------------------------
 
                                   COPIES TO:
 
                             GERALD TANENBAUM, ESQ.
                            CAHILL GORDON & REINDEL
                                 80 PINE STREET
                               NEW YORK, NY 10005
                                 (212) 701-3000
 
    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after this Registration Statement becomes effective and all other
conditions to the merger (the "Merger") of Corporate Office Properties Trust,
Inc. (the "Company"), indirectly, with and into the Registrant pursuant to the
Merger Agreement described herein have been satisfied or are waived.
 
    If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. / /
 
    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering. / /...............................
 
    If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. / /......................................................
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                                             AMOUNT
                                                             TO BE       PROPOSED MAXIMUM    PROPOSED MAXIMUM       AMOUNT OF
                 TITLE OF EACH CLASS OF                    REGISTERED     OFFERING PRICE        AGGREGATE        REGISTRATION FEE
              SECURITIES TO BE REGISTERED                     (1)          PER UNIT(2)      OFFERING PRICE (2)         (3)
<S>                                                       <C>           <C>                 <C>                 <C>
Common Shares of Beneficial Interest, $0.01 par value
  per share.............................................   2,341,083          $10.00            23,410,830          $6,906.19
</TABLE>
 
(1) The amount of common shares of beneficial interest, $0.01 par value per
    share, of the Registrant (the "Common Shares") to be registered has been
    determined based on the maximum number of shares of common stock, $0.01 par
    value per share, of the Company (the "Common Stock") to be exchanged in the
    Merger, assuming the exercise prior to the effective time of the Merger of
    all stock options (whether or not currently exercisable).
 
(2) Estimated solely for the purpose of calculating the registration fee in
    accordance with Rule 457(c) under the Securities Act of 1933, as amended,
    based on the average of the high and low last reported sale prices of the
    Common Stock as reported on the Nasdaq Small Cap Market tier of the Nasdaq
    Stock Market on February 3, 1998.
 
(3) In accordance with Rule 457(b), the total registration fee of $6,906.19 has
    been reduced by $4,996.52, which was previously paid on January 22, 1998 at
    the time of filing under the Securities Exchange Act of 1934, as amended, of
    a preliminary copy of the Company's proxy materials included herein.
                         ------------------------------
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                           [COPT LOGO OR LETTERHEAD]
 
                                                               February 11, 1998
 
Dear Shareholder:
 
    You are cordially invited to attend a Special Meeting of Shareholders of
Corporate Office Properties Trust, Inc., a Minnesota corporation (the
"Company"), to be held at 10:30 a.m., local time, on March 12, 1998 at Room 803,
Four Seasons Hotel, One Logan Square, Philadelphia, Pennsylvania.
 
    At the Special Meeting, you will be asked to consider and vote upon a
proposal to reform the Company (the "Reformation") as a Maryland real estate
investment trust ("REIT"). The Company is proposing the Reformation in order to
change its domicile to that of a state which is recognized by REIT analysts and
investors as a domicile of choice for REITs and to achieve greater
organizational and investment flexibility. The Reformation provides the
structure the Company needs to execute on its growth plans. There are also
certain state and local tax benefits that will also inure to the Company. As a
result, management of the Company believes that this new structure will benefit
all shareholders and should enhance the long-term value of their investment.
 
    The Company will be reformed as a Maryland REIT, which will be named
Corporate Office Properties Trust, pursuant to two consecutive mergers, (a) of
the Company into a newly formed, wholly owned subsidiary corporation of the
Company and (b) of the former subsidiary corporation into a newly formed, wholly
owned subsidiary Maryland real estate investment trust (the "Trust"), and the
conversion of each outstanding share of common stock of the Company into one
common share of beneficial interest of the Trust. Approval of the Reformation
will constitute approval of all of the provisions set forth in the Declaration
of Trust and the Bylaws of the Trust, including a classified board of trustees,
the members of which are the same as the current directors of the Company. The
Company believes the use of staggered terms for the trustees enhances the
continuity and stability of the board of trustees.
 
    The Reformation is more fully described in the accompanying Proxy
Statement/Prospectus. We urge you to review carefully the Proxy
Statement/Prospectus and accompanying Appendices. A copy of the Agreement and
Plan of Merger and the Declaration of Trust and the Bylaws of the Trust are
attached as Appendices A, B and C, respectively, to the accompanying Proxy
Statement/Prospectus.
 
    In addition to voting on the Reformation, you will be asked to consider and
vote upon the adoption of the 1998 Long Term Incentive Plan (the "Plan"). The
Company believes that a long-term, equity-based incentive plan is important to
the retention of its senior management team, and also aligns the economic
interests of its senior management team with the economic interests of its
shareholders. A copy of the Plan is attached as Appendix D to the accompanying
Proxy Statement/Prospectus.
 
    The Company's Board of Directors recommends a vote FOR the Reformation and
the Plan.
 
    Your vote is important to the Company. Failure to return your proxy card or
vote would have the same effect as a vote against the Reformation. Please
complete, date and sign the enclosed proxy card and return it in the
accompanying postage-paid envelope.
 
Sincerely,
 
            Chairman of the Board     President and Chief Executive Officer
<PAGE>
                    CORPORATE OFFICE PROPERTIES TRUST, INC.
                          ONE LOGAN SQUARE, SUITE 1105
                        PHILADELPHIA, PENNSYLVANIA 19103
 
                           NOTICE OF SPECIAL MEETING
                           TO BE HELD MARCH 12, 1998
 
    NOTICE IS HEREBY GIVEN that a Special Meeting of Shareholders (the "Special
Meeting") of Corporate Office Properties Trust, Inc., a Minnesota corporation
(the "Company"), will be held on March 12, 1998 at 10:30 a.m., local time, at
Room 803, Four Seasons Hotel, One Logan Square, Philadelphia, Pennsylvania, to
consider and vote upon the following matters more fully described in the
accompanying Proxy Statement/Prospectus:
 
    1. A proposal to approve the reformation of the Company as a Maryland real
estate investment trust, which will be named Corporate Office Properties Trust,
pursuant to two consecutive mergers, (a) of the Company into a newly formed,
wholly owned subsidiary corporation of the Company and (b) of the former
subsidiary corporation into a newly formed, wholly owned subsidiary Maryland
real estate investment trust (the "Trust"), and the conversion of each
outstanding share of common stock of the Company into one common share of
beneficial interest of the Trust, which approval shall constitute approval of
all the provisions set forth in the Declaration of Trust and the Bylaws of the
Trust, including a classified board of trustees, the members of which are the
same as the current directors of the Company, and the more flexible operational
and investment policies permitted thereunder.
 
    2. The adoption of the 1998 Long Term Incentive Plan.
 
    3. Such other business that may properly come before the Special Meeting or
any adjournment or postponement thereof.
 
    The Board of Directors has fixed the close of business on February 11, 1998
as the record date (the "Record Date") for the determination of shareholders
entitled to notice of and to vote at the Special Meeting and any adjournment or
postponement thereof. A list of such shareholders will be available for
inspection at the offices of the Company, One Logan Square, Suite 1105,
Philadelphia, Pennsylvania, at least ten days prior to the Special Meeting.
 
                                          By order of the Board of Directors.
                                          Secretary
 
WHETHER OR NOT YOU PLAN TO ATTEND THE SPECIAL MEETING, PLEASE COMPLETE, SIGN AND
DATE THE ENCLOSED PROXY CARD AND MAIL IT PROMPTLY IN THE ENCLOSED POSTAGE PAID
ENVELOPE. IF YOU ATTEND THE SPECIAL MEETING, YOU MAY VOTE IN PERSON IF YOU WISH
TO DO SO EVEN IF YOU HAVE PREVIOUSLY SENT IN YOUR PROXY.
<PAGE>
                           PROXY STATEMENT/PROSPECTUS
                    CORPORATE OFFICE PROPERTIES TRUST, INC.
                                PROXY STATEMENT
                        SPECIAL MEETING OF SHAREHOLDERS
                                 MARCH 12, 1998
                            ------------------------
 
                       CORPORATE OFFICE PROPERTIES TRUST
 
                                   PROSPECTUS
 
             UP TO 2,341,083 COMMON SHARES OF BENEFICIAL INTEREST,
        PAR VALUE $0.01 PER SHARE, OF CORPORATE OFFICE PROPERTIES TRUST
 
    This Proxy Statement/Prospectus is furnished to the shareholders of
Corporate Office Properties Trust, Inc., a Minnesota corporation ("COPT" or the
"Company"), previously named Royale Investments, Inc. ("Royale"), in connection
with the solicitation of proxies on behalf of the Board of Directors (the
"Board") for use at the Special Meeting of Shareholders of the Company (the
"Special Meeting") to be held on March 12, 1998, at 10:30 a.m., local time, at
Room 803, Four Seasons Hotel, One Logan Square, Philadelphia, Pennsylvania, and
at any adjournment or postponement thereof. The approximate date on which this
Proxy Statement/Prospectus and form of proxy solicited on behalf of the Board
will first be sent to the Company's shareholders is on or about February 11,
1998.
 
    At the Special Meeting, holders of record (the "Shareholders") of shares of
common stock, par value $0.01 per share (the "Common Stock"), of the Company
will consider and vote upon (i) the reformation of the Company as a Maryland
real estate investment trust, which will be named Corporate Office Properties
Trust, pursuant to two consecutive mergers, (a) of the Company into a newly
formed, wholly owned subsidiary corporation of the Company and (b) of the former
subsidiary corporation into a newly formed, wholly owned subsidiary Maryland
real estate investment trust (the "Trust"), and the conversion of each
outstanding share of Common Stock into one common share of beneficial interest,
par value $0.01 per share (the "Common Shares"), of the Trust (the
"Reformation") pursuant to the terms of an Agreement and Plan of Merger (the
"Merger Agreement"), which approval shall constitute approval of the Merger
Agreement and all of the provisions set forth in the Amended and Restated
Declaration of Trust (the "Declaration of Trust") and the Bylaws (the "Maryland
Bylaws") of the Trust, including a classified board of trustees (the "Board of
Trustees"), the members of which are the same as the current directors of the
Company, and the more flexible operating and investment policies permitted
thereunder, (ii) the adoption of the 1998 Long Term Incentive Plan (the "Plan")
and (iii) such other business as may properly come before the Special Meeting or
any adjournment or postponement thereof. A copy of the Merger Agreement, the
Declaration of Trust, the Maryland Bylaws and the Plan are attached hereto as
Appendices A, B, C and D, respectively. The Board recommends a vote FOR the
Reformation and a vote FOR the adoption of the Plan. See "Proposal
1--Reformation of the Company" and "Proposal 2--Adoption of the Plan."
                                                        (CONTINUED ON NEXT PAGE)
 
    SEE "RISK FACTORS" COMMENCING ON PAGE 9 OF THIS PROXY STATEMENT/PROSPECTUS
FOR A DISCUSSION OF CERTAIN FACTORS THAT SHAREHOLDERS SHOULD CONSIDER WITH
RESPECT TO THE REFORMATION AND THE SECURITIES BEING OFFERED HEREBY.
                             ---------------------
 
    This Proxy Statement/Prospectus is accompanied by a copy of Royale's Annual
Report on Form 10-KSB, as amended, for the year ended December 31, 1996,
Quarterly Report on Form 10-QSB for the period ended September 30, 1997 and
Current Report on Form 8-K filed January 20, 1998.
                            ------------------------
 
 THE ATTORNEY GENERAL OF THE STATE OF NEW YORK HAS NOT PASSED UPON OR
          ENDORSED THE MERITS OF THIS OFFERING. ANY REPRESENTATION
                          TO THE CONTRARY IS UNLAWFUL.
                            ------------------------
 
     THE SECURITIES ISSUABLE IN THE REFORMATION HAVE NOT BEEN APPROVED OR
      DISAPPROVED BY THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE
    SECURITIES COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR
     ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY
         OF THIS PROXY STATEMENT/PROSPECTUS. ANY REPRESENTATION TO THE
                        CONTRARY IS A CRIMINAL OFFENSE.
                            ------------------------
 
       THE DATE OF THIS PROXY STATEMENT/PROSPECTUS IS FEBRUARY   , 1998.
<PAGE>
(CONTINUED FROM PREVIOUS PAGE)
 
    The close of business on February 11, 1998 has been fixed by the Board as
the record date for the determination of Shareholders entitled to notice of and
to vote at the Special Meeting. On February 11, 1998, the Company had
outstanding 2,268,583 shares of Common Stock. The Common Stock is the Company's
only class of voting securities and each share entitles the holder to one vote
on all matters to come before the meeting. There is no cumulative voting. Under
Minnesota law, the affirmative vote of a majority of the outstanding shares of
Common Stock is required to approve the Reformation. The adoption of the Plan
requires the affirmative vote of a majority of the shares of Common Stock
represented and entitled to vote, in person or by proxy, at the Special Meeting.
Presence at the Special Meeting, in person or by proxy, of holders of a majority
of the shares of Common Stock outstanding and entitled to vote will constitute a
quorum for the transaction of business at the Special Meeting.
 
    Unless contrary instructions are indicated on the proxy, all shares of
Common Stock represented by valid proxies received pursuant to this solicitation
(and not revoked before they are voted) will be voted at the Special Meeting FOR
the Reformation and FOR the adoption of the Plan. With respect to any other
business which may properly come before the Special Meeting and be submitted to
a vote of shareholders, proxies received by the Board of Directors will be voted
in the discretion of the designated proxy holders. A Shareholder may revoke his
or her proxy at any time before exercise by delivering to the Secretary of the
Company a written notice of such revocation, by filing with the Secretary of the
Company a duly executed proxy bearing a later date or by voting in person at the
Special Meeting. Attendance at the Special Meeting will not by itself be
sufficient to revoke a proxy.
 
    Votes cast by proxy or in person at the Special Meeting will be tabulated by
the election inspector appointed for the meeting. The election inspector will
treat abstentions as shares that are present and entitled to vote for purposes
of determining the presence of a quorum, but as unvoted for purposes of
determining the approval of any matter upon which the Shareholder has abstained.
Broker non-votes with respect to a given proposal will not be counted as either
"for" or "against" it. If a broker indicates on the proxy that it does not have
discretionary authority as to certain shares to vote on a particular matter,
those shares will not be considered as present and entitled to vote with respect
to that matter.
 
    If the Special Meeting is postponed or adjourned for any reason, at any
subsequent reconvening of the Special Meeting all proxies will be voted in the
same manner as such proxies would have been voted at the original convening of
the Special Meeting (except for any proxies that have theretofore effectively
been revoked or withdrawn).
 
    The cost of preparing, assembling and mailing the Notice of Special Meeting,
this Proxy Statement/ Prospectus and the form of proxy, including the
reimbursement of banks, brokers and other nominees for forwarding proxy
materials to beneficial owners, will be borne by the Company. Proxies may also
be solicited personally or by telephone by directors and officers of the
Company, who will receive no additional compensation.
 
    This Proxy Statement/Prospectus also constitutes the prospectus of the Trust
filed with the Securities and Exchange Commission (the "Commission") as a part
of a Registration Statement on Form S-4 (the "Registration Statement") under the
Securities Act of 1933, as amended (the "Securities Act"), relating to the
Common Shares to be issued to Shareholders of the Company upon consummation of
the Reformation.
 
    The Company's Common Stock is listed for trading on the Nasdaq Small Cap
Market tier of the Nasdaq Stock Market ("NASDAQ") under the symbol COPT. On
February 3, 1998, the last sale price for the Company's Common Stock as reported
on NASDAQ was $10.00 per share.
 
    No person has been authorized to give any information or to make any
representations not contained in this Proxy Statement/Prospectus and, if given
or made, such information or representations must not be relied upon as having
been authorized by the Company or the Trust. This Proxy Statement/Prospectus
does not constitute an offer to sell, or a solicitation of an offer to buy, any
securities, or the solicitation of a proxy, in any jurisdiction to any person to
whom it is unlawful to make such offer or solicitation. Neither the delivery of
this Proxy Statement/Prospectus nor any sale made hereunder shall under any
circumstances create any implication that there has been no change in the
affairs of the Company or the Trust subsequent to the date hereof.
 
                                       ii
<PAGE>
                                    CONTENTS
 
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
AVAILABLE INFORMATION......................................................................................          1
INCORPORATION OF DOCUMENTS BY REFERENCE....................................................................          1
SUMMARY....................................................................................................          2
  Summary Historical Consolidated Financial Data of the Company............................................          6
  Market Price and Distribution Information................................................................          8
RISK FACTORS...............................................................................................          9
  Reliance on Major Tenants................................................................................          9
  Lack of Geographical Diversity...........................................................................          9
  Risk of Inability to Sustain Distribution Level..........................................................          9
  Effects of Ownership Limit, Classified Board and Power to Issue Additional Shares........................          9
  Tax Risks................................................................................................         11
  Conflicts of Interest....................................................................................         13
  Real Estate Investment Risks.............................................................................         14
  Real Estate Financing Risks..............................................................................         17
  Possible Adverse Effect of Shares Available for Future Sale on Price of Common Shares....................         18
  Control of Management; Limits on Change of Control.......................................................         18
  Possible Changes in Policies Without Shareholder Approval; No Limitation on Debt.........................         19
  Dependence on Key Personnel..............................................................................         19
  Possible Adverse Effect on Price of Common Shares........................................................         19
  Risks Associated with Reliance on Forward-Looking Statements.............................................         19
PROPOSAL 1--REFORMATION OF THE COMPANY.....................................................................         20
  General..................................................................................................         20
  Board Recommendation; Reasons for the Reformation........................................................         20
  Vote Required............................................................................................         20
  Reformation..............................................................................................         21
  The Merger Agreement.....................................................................................         21
  Certain Consequences of the Mergers......................................................................         22
  Accounting Treatment of the Mergers......................................................................         23
  Rights of Dissenting Shareholders........................................................................         23
  Description of Shares of Beneficial Interest.............................................................         25
  Comparison of Rights of Shareholders of the Company and Shareholders of the Trust........................         29
THE COMPANY................................................................................................         40
  General..................................................................................................         40
  Business Objectives and Growth Strategies................................................................         40
  Capitalization Strategy..................................................................................         41
PROPERTIES.................................................................................................         43
  The Suburban Office Properties...........................................................................         43
  The Retail Properties....................................................................................         48
  Tenants..................................................................................................         49
  Lease Expiration--Portfolio Total........................................................................         50
  Lease Expirations by Property............................................................................         51
DISTRIBUTION POLICY........................................................................................         54
POLICIES WITH RESPECT TO CERTAIN ACTIVITIES................................................................         54
  Investment Policies......................................................................................         54
  Financing Policies.......................................................................................         55
  Conflict of Interest Policies............................................................................         56
  Working Capital Reserves.................................................................................         57
OPERATING PARTNERSHIP AGREEMENT............................................................................         58
</TABLE>
 
                                      iii
<PAGE>
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
  General..................................................................................................         58
  Management...............................................................................................         58
  Conversion and Redemption................................................................................         59
  Liability and Indemnification............................................................................         59
  Capital Contributions....................................................................................         59
  Tax Matters..............................................................................................         60
  Operations...............................................................................................         60
  Term.....................................................................................................         60
MANAGEMENT.................................................................................................         61
  Executive Officers and Trustees..........................................................................         61
  Certain Information Regarding the Board of Trustees and Committees.......................................         64
  Executive Compensation...................................................................................         64
  Employment Agreement.....................................................................................         65
  Existing Plan............................................................................................         65
SECURITY OWNERSHIP OF MANAGEMENT AND OTHERS................................................................         66
  The Company..............................................................................................         66
  The Operating Partnership................................................................................         67
  Registration Rights......................................................................................         67
CERTAIN TRANSACTIONS.......................................................................................         68
  The Transactions.........................................................................................         68
  Management Agreement.....................................................................................         69
  Other....................................................................................................         69
DESCRIPTION OF PROPERTY FINANCING..........................................................................         69
FEDERAL INCOME TAX CONSIDERATIONS..........................................................................         70
  Taxation of the Trust....................................................................................         71
  Tax Aspects of the Trust's Investments in Partnerships...................................................         75
  Taxation of Shareholders.................................................................................         76
  Other Tax Considerations.................................................................................         78
PROPOSAL 2--ADOPTION OF THE PLAN...........................................................................         80
  Description of the Plan..................................................................................         80
  Board Recommendation.....................................................................................         80
  Vote Required............................................................................................         81
  Federal Income Tax Consequences..........................................................................         82
INDEPENDENT ACCOUNTANTS....................................................................................         82
SHAREHOLDER PROPOSALS FOR THE 1999 ANNUAL MEETING OF SHAREHOLDERS..........................................         82
OTHER MATTERS..............................................................................................         82
LEGAL MATTERS..............................................................................................         82
EXPERTS....................................................................................................         83
INDEX TO FINANCIAL STATEMENTS..............................................................................        F-1
 
Appendix A--Agreement and Plan of Merger...................................................................        A-1
Appendix B--Amended and Restated Declaration of Trust of the Trust.........................................        B-1
Appendix C--Maryland Bylaws of the Trust...................................................................        C-1
Appendix D--1998 Long Term Incentive Plan..................................................................        D-1
Appendix E--Sections 302A.471 and 302A.473 of the Minnesota Business Corporation Act.......................        E-1
</TABLE>
 
                                       iv
<PAGE>
                             AVAILABLE INFORMATION
 
    The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports and other information with the Commission relating to
its business, financial position, results of operations and other matters. Such
reports, proxy statements and other information can be inspected and copied at
the Public Reference Section maintained by the Commission at Judiciary Plaza,
450 Fifth Street, N.W., Washington, D.C. 20549 and at its Regional Offices
located at The Citicorp Center, 500 West Madison Street, Suite 1400, Chicago,
Illinois 60661-2511, and 7 World Trade Center, New York, New York 10048. Copies
of such material also can be obtained from the Public Reference Section of the
Commission at 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed
rates. The Common Stock is listed for trading on the NASDAQ. Such reports, proxy
statements and other information can also be inspected at the offices of the
Nasdaq Stock Market, 1735 K Street, N.W., Washington, D.C. 20006. Such reports,
proxy statements and other information can be reviewed through the Commission's
Electronic Data Gathering Analysis and Retrieval System, which is publicly
available through the Commission's web site (http://www.sec.gov).
 
    The Trust has filed with the Commission the Registration Statement under the
Securities Act with respect to the Common Shares offered hereby. This Proxy
Statement/Prospectus does not contain all the information set forth in the
Registration Statement, certain parts of which are omitted in accordance with
the rules and regulations of the Commission. Reference is made to the
Registration Statement and to the exhibits relating thereto for further
information with respect to the Company, the Trust and the Common Shares offered
hereby.
 
                    INCORPORATION OF DOCUMENTS BY REFERENCE
 
    The following documents filed with the Commission by the Company (File No.
0-20047) pursuant to the Exchange Act are incorporated by reference in this
Proxy Statement/Prospectus:
 
        1. The Company's Annual Report on Form 10-KSB for the year ended
    December 31, 1996 (other than the audited financial information of the
    Company set forth therein);
 
        2. The Company's Quarterly Reports on Form 10-QSB for the periods ended
    March 31, 1997, June 30, 1997 and September 30, 1997; and
 
        3. The Company's Current Reports on Form 8-K filed October 29, 1997,
    November 6, 1997, December 24, 1997 and January 20, 1998.
 
    Any statement contained in a document incorporated by reference herein shall
be deemed to be modified or superseded for purposes of this Proxy
Statement/Prospectus to the extent that a statement contained herein or in any
other subsequently filed document which also is incorporated by reference herein
modifies or supersedes such statement. Any such statement so modified or
superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Proxy Statement/Prospectus.
 
    THIS PROXY STATEMENT/PROSPECTUS INCORPORATES DOCUMENTS BY REFERENCE WHICH
ARE NOT PRESENTED HEREIN OR DELIVERED HEREWITH. SUCH DOCUMENTS (OTHER THAN
EXHIBITS TO SUCH DOCUMENTS UNLESS SUCH EXHIBITS ARE SPECIFICALLY INCORPORATED BY
REFERENCE) ARE AVAILABLE, WITHOUT CHARGE, TO ANY PERSON, INCLUDING ANY
BENEFICIAL OWNER, TO WHOM THIS PROXY STATEMENT/PROSPECTUS IS DELIVERED, ON
WRITTEN OR ORAL REQUEST TO CORPORATE OFFICE PROPERTIES TRUST, INC., ONE LOGAN
SQUARE, SUITE 1105, PHILADELPHIA, PENNSYLVANIA 19103, ATTN: DENISE J. LISZEWSKI
(TELEPHONE NUMBER (215) 567-1800). IN ORDER TO ENSURE TIMELY DELIVERY OF THE
INCORPORATED DOCUMENTS, REQUESTS SHOULD BE RECEIVED PRIOR TO FEBRUARY 28, 1998.
<PAGE>
                                    SUMMARY
 
    THE FOLLOWING IS A SUMMARY OF CERTAIN INFORMATION CONTAINED ELSEWHERE IN
THIS PROXY STATEMENT/PROSPECTUS AND IS QUALIFIED IN ITS ENTIRETY BY THE MORE
DETAILED INFORMATION AND FINANCIAL STATEMENTS CONTAINED AND INCORPORATED BY
REFERENCE IN THIS PROXY STATEMENT/PROSPECTUS. UNLESS THE CONTEXT OTHERWISE
REQUIRES, THE "COMPANY" REFERS TO ROYALE PRIOR TO OCTOBER 14, 1997, AND
THEREAFTER INCLUDES ITS SUBSIDIARY CORPORATE OFFICE PROPERTIES HOLDINGS, INC., A
DELAWARE CORPORATION FORMERLY NAMED FCO HOLDINGS, INC. ("HOLDINGS"), AND
CORPORATE OFFICE PROPERTIES, L.P., FORMERLY NAMED FCO, L.P. (THE "OPERATING
PARTNERSHIP"), TOGETHER WITH THE DELAWARE AND PENNSYLVANIA LIMITED PARTNERSHIPS
IN WHICH THE COMPANY, THROUGH HOLDINGS AND THE OPERATING PARTNERSHIP, HAS
INTERESTS. UNLESS THE CONTEXT OTHERWISE REQUIRES, THE DESCRIPTION OF THE TRUST
ASSUMES THE REFORMATION HAS OCCURRED. CERTAIN CAPITALIZED TERMS WHICH ARE USED
HEREIN BUT NOT DEFINED IN THIS SUMMARY ARE DEFINED ELSEWHERE IN THIS PROXY
STATEMENT/PROSPECTUS.
 
<TABLE>
<S>                            <C>
The Company..................  The Company is a self-administered real estate investment
                               trust ("REIT") which focuses principally on the ownership,
                               acquisition and management of suburban office properties in
                               high growth submarkets in the United States. The Company
                               currently owns interests in ten suburban office buildings in
                               Pennsylvania and New Jersey containing approximately 1.5
                               million rentable square feet (the "Shidler Acquisition
                               Properties") and seven retail properties located in the
                               Midwest containing approximately 370,000 rentable square
                               feet. As of December 31, 1997, the Company's properties were
                               over 99% leased.
 
                               The Company was formed in 1988 as Royale Investments, Inc.
                               to own and acquire retail properties and subsequently became
                               an externally advised REIT. On October 14, 1997, the
                               Company, as part of a series of transactions, acquired the
                               Mid-Atlantic suburban office operations of The Shidler
                               Group, a national real estate firm (the "Transactions"). As
                               a result of the Transactions, the Company relocated its
                               headquarters from Minneapolis to Philadelphia and became
                               internally administered. Further, Jay Shidler became the
                               Company's Chairman of the Board and Clay Hamlin became the
                               Company's President and Chief Executive Officer. On January
                               1, 1998, the Company changed its name to Corporate Office
                               Properties Trust, Inc.
 
The Trust....................  A newly formed Maryland REIT. The Trust expects to continue
                               the Company's qualification as a REIT for federal income tax
                               purposes.
 
The Transactions.............  On October 14, 1997, the Company completed a number of
                               transactions in connection with the acquisition of the
                               Mid-Atlantic suburban office operations of The Shidler Group
                               pursuant to the Formation/Contribution Agreement dated
                               September 7, 1997, as amended (the "Formation Agreement").
                               Although the Transactions involved a number of properties
                               and partnerships and were effected by a series of
                               intermediate steps, the Transactions, in effect, constituted
                               the acquisition by the Company of an interest in the
                               Operating Partnership formed to acquire (the "Acquisition")
                               the Shidler Acquisition Properties. See "Certain
                               Transactions--The Transactions."
 
The Special Meeting..........  The Special Meeting will be held on March 12, 1998 at 10:30
                               a.m., local time, at Room 803, Four Seasons Hotel, One Logan
                               Square, Philadelphia, Pennsylvania. The purpose of the
                               Special Meeting is to
</TABLE>
 
                                       2
<PAGE>
 
<TABLE>
<S>                            <C>
                               consider and vote upon (i) the Reformation, (ii) the Plan
                               and (iii) such other business as may properly come before
                               the Special Meeting.
 
                               Only holders of record of the Common Stock at the close of
                               business on February 11, 1998 (the "Record Date") will be
                               entitled to vote at the Special Meeting or any postponement
                               or adjournment thereof. As of the Record Date, there were
                               2,268,583 shares of Common Stock outstanding and entitled to
                               vote at the Special Meeting.
 
                               The directors and officers of the Company and their
                               affiliates owned as of the Record Date 864,892 outstanding
                               shares of Common Stock representing approximately 38% of the
                               outstanding Common Stock entitled to vote at the Special
                               Meeting. All such persons have indicated their present
                               intention to vote their shares in favor of the Reformation
                               and to adopt the Plan.
 
Required Vote................  Under Minnesota law, the affirmative vote of a majority of
                               the outstanding shares of Common Stock is required to
                               approve the Reformation. The adoption of the Plan requires
                               the affirmative vote of a majority of the shares of Common
                               Stock represented and entitled to vote, in person or by
                               proxy, at the Special Meeting.
 
Recommendations of the
Board........................  The Board, including the independent directors, who
                               constitute a majority of the Board, has unanimously approved
                               the Merger Agreement and has determined that the Reformation
                               is fair to, and in the best interests of, the Company and
                               its Shareholders. THE BOARD UNANIMOUSLY RECOMMENDS THAT THE
                               SHAREHOLDERS VOTE FOR APPROVAL OF THE REFORMATION. The
                               Company is proposing the Reformation in order to domicile in
                               a state which is recognized by REIT analysts and investors
                               as a domicile of choice for REITs and to achieve
                               organizational and investment flexibility. The Reformation
                               provides the structure the Company needs to execute on its
                               growth plans. There are also certain state and local tax
                               benefits that will also inure to the Company. For a further
                               discussion of the reasons for the Reformation and the
                               factors considered by the Board in approving the Merger
                               Agreement, see "Proposal 1--Reformation of the
                               Company--Board Recommendation; Reasons for the Reformation."
 
                               The Board also unanimously recommends that the Shareholders
                               adopt the Plan. The Company believes that a long-term,
                               equity-based incentive plan is important to the retention of
                               its senior management team, and also aligns the economic
                               interests of its senior management team with the economic
                               interests of its shareholders. See "Proposal 2--Adoption of
                               the Plan--Board Recommendation."
 
Revocability of Proxies......  A Shareholder may revoke his or her proxy at any time before
                               exercise by delivering to the Secretary of the Company a
                               written notice of such revocation, by filing with the
                               Secretary of the Company a duly executed proxy bearing a
                               later date or by voting in person at the Special Meeting.
</TABLE>
 
                                       3
<PAGE>
 
<TABLE>
<S>                            <C>
The Reformation..............  The reformation of the Company as a Maryland real estate
                               investment trust accomplished through the Mergers (as
                               hereinafter defined).
 
The Mergers..................  The merger of the Company into a newly formed Maryland
                               corporation (the "Company Merger"), which shall be the
                               surviving corporation, followed by the merger of the
                               surviving corporation into the Trust with the Trust
                               surviving (the "Trust Merger" and, together with the Company
                               Merger, the "Mergers"), in each case pursuant to the Merger
                               Agreement. The Reformation is taking the form of this
                               two-step merger because Minnesota law does not permit the
                               direct merger of a Minnesota corporation into a Maryland
                               real estate investment trust. See "Proposal 1--Reformation
                               of the Company-- Reformation."
 
Consequences of the
Mergers......................  As a result of the Mergers, each share of Common Stock will
                               be converted into one Common Share. The Trust will succeed
                               to all of the assets and liabilities of the Company. See
                               "Proposal 1-- Reformation of the Company--Certain
                               Consequences of the Mergers."
 
Effective Time of the
Mergers......................  If the Reformation is approved, the effective time of the
                               Mergers will be the later of the filing of the Articles of
                               Merger with the Secretary of State of the State of Minnesota
                               and the acceptance for record of the Articles of Merger by
                               the State Department of Assessments and Taxation of
                               Maryland. See "Proposal 1--Reformation of the
                               Company--Certain Consequences of the Mergers--Effective
                               Time."
 
Conditions to the Mergers....  The Merger Agreement provides that, among others, the
                               following are conditions to the Mergers: (i) the approval of
                               the Merger Agreement by the Shareholders at the Special
                               Meeting; (ii) holders of less than 5.0% of the outstanding
                               shares of Common Stock shall have exercised their
                               dissenter's rights; and (iii) no order to restrain or enjoin
                               the consummation of the Mergers shall have been entered.
                               Certain of the conditions may be waived. The Merger
                               Agreement also provides that the parties may terminate the
                               Merger Agreement before or after the Special Meeting. See
                               "Proposal 1--Reformation of the Company--The Merger
                               Agreement."
 
Accounting Treatment.........  The Reformation will be accounted for as if it were a
                               pooling of interests with no adjustment to the carrying
                               value of the underlying assets and liabilities. See
                               "Proposal 1--Reformation of the Company--Accounting
                               Treatment of the Mergers."
 
Certain Federal Income Tax
Consequences.................  The Company believes that the Reformation will be tax-free
                               under the Internal Revenue Code of 1986, as amended (the
                               "Code"). Accordingly, (i) no gain or loss will be recognized
                               under the Code by holders of shares of Common Stock who
                               exchange such shares for Common Shares as a result of the
                               Reformation, and (ii) no gain or loss will be recognized
                               under the Code by the Company or the Trust as a result of
                               the Reformation. See "Proposal 1--Reformation of the
                               Company--Certain Consequences of the Mergers--Federal Income
                               Tax Consequences."
</TABLE>
 
                                       4
<PAGE>
 
<TABLE>
<S>                            <C>
Dissenters' Rights...........  Shareholders who comply with the specific requirements of
                               Section 302A.471 of the Minnesota Business Corporation Act
                               (the "MBCA") will have certain dissenters' rights in
                               connection with the Mergers. It is a condition to the
                               Mergers that holders of less than 5.0% of the outstanding
                               shares of Common Stock shall have exercised such rights. For
                               a description of these rights and the procedures that must
                               be followed by shareholders to obtain these rights, see
                               "Proposal 1-- Reformation of the Company--Rights of
                               Dissenting Shareholders."
 
Comparison of Shareholder
Rights.......................  At the effective time of the Mergers, the Company's
                               shareholders will automatically become holders of beneficial
                               interests in the Trust and their rights as shareholders will
                               be governed by Maryland law and by the Declaration of Trust
                               and the Maryland Bylaws. The rights of shareholders of the
                               Trust differ from the rights of shareholders of the Company
                               with respect to a number of important matters. For a summary
                               of these differences, see "Proposal 1--Reformation of the
                               Company--Comparison of Rights of Shareholders of the Company
                               and Shareholders of the Trust."
 
Risk Factors.................  Shareholders should carefully consider certain risk factors
                               in evaluating the Reformation. See "Risk Factors."
</TABLE>
 
                                       5
<PAGE>
                        SUMMARY HISTORICAL CONSOLIDATED
                         FINANCIAL DATA OF THE COMPANY
 
    The following summary financial information of the Company for each of the
fiscal years ended December 31, 1992, 1993, 1994, 1995 and 1996 has been derived
from the Company's audited financial statements contained in its Annual Reports
on Form 10-K for the years ended December 31, 1992 and 1993 and its Current
Report on Form 8-K filed for the years ended December 31, 1994, 1995 and 1996
and is qualified in its entirety by such documents. The summary financial
information of the Company for the nine months ended September 30, 1996 and 1997
has been derived from unaudited consolidated financial statements contained in
its Quarterly Report on Form 10-Q for the period ended September 30, 1997 (and
is qualified in its entirety by such documents), and, in the opinion of the
Company's management, includes all adjustments, consisting only of normal
recurring adjustments, necessary for a fair presentation of such information for
the unaudited interim periods. The operating results for the nine months ended
September 30, 1997 are not necessarily indicative of results for the full fiscal
year. This information should be read in conjunction with Management's
Discussion and Analysis of Financial Condition and Results of Operations of the
Company and the Consolidated Financial Statements and the Notes thereto of the
Company incorporated by reference in this Proxy Statement/Prospectus.
 
    The financial data set forth below do not reflect the effect of the
Transactions, which closed on October 14, 1997. This information should be read
in conjunction with the Combined Financial Statements of the Shidler Acquisition
Properties and the Unaudited Pro Forma Condensed Consolidating Financial
Statements of the Company contained in the Company's Current Report on Form 8-K
dated December 24, 1997 incorporated by reference in this Proxy
Statement/Prospectus.
 
                                       6
<PAGE>
                            ROYALE INVESTMENTS, INC.
                             SUMMARY FINANCIAL DATA
<TABLE>
<CAPTION>
                                                                                                       NINE MONTHS ENDED
                                                              YEAR ENDED DECEMBER 31,                    SEPTEMBER 30,
                                               -----------------------------------------------------  --------------------
<S>                                            <C>        <C>        <C>        <C>        <C>        <C>        <C>
                                                 1992       1993       1994       1995       1996       1996       1997
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
 
<CAPTION>
                                                                                                          (UNAUDITED)
                                                           (IN THOUSANDS, EXCEPT PER SHARE AND PROPERTY DATA)
<S>                                            <C>        <C>        <C>        <C>        <C>        <C>        <C>
OPERATING DATA:
 
Revenue:
  Rental income..............................  $     518  $   1,074  $   2,038  $   2,436  $   2,477  $   1,844  $   1,881
  Other......................................        119         70        217         49         32         25         18
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
      Total revenue..........................        637      1,144      2,255      2,485      2,509      1,869      1,899
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Expenses:
  Interest...................................        243        461      1,098      1,267      1,246        937        920
  Depreciation and amortization..............        125        256        476        567        567        425        425
  Property expenses..........................         99        204        345        344        361        269        255
  General and administrative.................         36         42         35         35         42         24         36
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
      Total expenses.........................        503        963      1,954      2,213      2,216      1,655      1,636
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net income...................................  $     134  $     181  $     301  $     272  $     293  $     214  $     263
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net income per share.........................  $    0.19  $    0.17  $    0.21  $    0.19  $    0.21  $    0.15  $    0.19
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Cash distributions declared..................  $     639  $     923  $   1,207  $     710  $     710  $     533  $     533
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Cash distributions per share.................  $    0.90  $    0.88  $    0.85  $    0.50  $    0.50  $    0.38  $    0.38
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
BALANCE SHEET DATA (AS OF PERIOD END):
 
Real estate investments, net of accumulated
  depreciation...............................  $   9,931  $  15,110  $  24,179  $  23,624  $  23,070  $  23,209  $  22,654
Total assets.................................     10,798     18,882     25,647     24,779     24,197     24,252     23,686
Mortgages payable............................      4,800      7,450     15,153     14,918     14,658     14,718     14,448
Total liabilities............................      5,235      7,950     15,620     15,191     15,026     14,982     14,784
Shareholders' equity.........................      5,563     10,932     10,026      9,588      9,171      9,270      8,902
 
OTHER DATA:
Cash flows provided by (used in):
  Operating activities.......................  $     534  $     358  $     690  $     678  $     841  $     552  $     613
  Investing activities.......................     (9,278)    (5,461)    (9,511)      (551)       127         64        368
  Financing activities.......................      4,062      7,829      8,357     (1,001)      (967)      (730)      (742)
Funds from Operations (a)....................        259        437        768        827        847        630        679
Weighted average shares outstanding..........        710      1,065      1,420      1,420      1,420      1,420      1,420
 
PROPERTY DATA (AS OF PERIOD END):
Number of properties owned...................          2          4          7          7          7          7          7
Total net rentable square feet owned (in
  thousands).................................        135        215        370        370        370        370        370
</TABLE>
 
- ------------------------
 
(a) Management generally considers Funds from Operations ("FFO") to be a useful
    measure of the operating performance of an equity REIT because, together
    with net income and cash flows, FFO provides investors with an additional
    basis to evaluate the ability of a REIT to incur and service debt and to
    fund acquisitions and other capital expenditures. FFO does not represent net
    income or cash flows from operations as defined by generally accepted
    accounting principles ("GAAP") and does not necessarily indicate that cash
    flows will be sufficient to fund cash needs. It should not be considered as
    an alternative to net income as an indicator of the Company's operating
    performance or to cash flows as a measure of liquidity. FFO also does not
    represent cash flows generated from operating, investing or financing
    activities as defined by GAAP. Further, FFO as disclosed by other REITs may
    not be comparable to the Company's calculation of FFO. The Company has
    adopted the National Association of Real Estate Investment Trusts definition
    of FFO and has used it for all periods presented. FFO is calculated as net
    income (loss) (computed in accordance with GAAP) adjusted for depreciation
    and amortization expense attributable to capitalized leasing costs, tenant
    allowances and improvements, and extraordinary and nonrecurring items less
    minority interests.
 
                                       7
<PAGE>
                   MARKET PRICE AND DISTRIBUTION INFORMATION
 
    The Company's Common Stock is listed for trading on NASDAQ under the symbol
"COPT" and prior to January 1, 1998 was listed under the symbol "RLIN." The
following table sets forth the range of the high and low last reported sale
prices as reported on NASDAQ as well as the quarterly distributions declared per
share of Common Stock. The quotations shown represent interdealer prices without
adjustment for retail markups, markdowns or commissions, and may not reflect
actual transactions.
 
<TABLE>
<CAPTION>
                                                                                      LOW       HIGH     DISTRIBUTION
                                                                                   ---------  ---------  -----------
<S>                                                                                <C>        <C>        <C>
1996
 
First Quarter....................................................................  $   4.750  $   5.375   $   0.125
Second Quarter...................................................................      4.875      5.750       0.125
Third Quarter....................................................................      4.875      5.750       0.125
Fourth Quarter...................................................................      4.750      5.500       0.125
 
1997
 
First Quarter....................................................................      4.500      6.000       0.125
Second Quarter...................................................................      4.500      5.625       0.125
Third Quarter....................................................................      5.000      7.875       0.125
Fourth Quarter...................................................................      6.813     11.750       0.125
 
1998
 
First Quarter
  (through February 3, 1998).....................................................      9.750     11.500      --
</TABLE>
 
    On September 5, 1997, the last trading day before the announcement of the
Transactions, the last sale price of the Common Stock, as reported on NASDAQ,
was $5-9/16. On September 8, 1997, the date on which the Transactions were first
announced, the last sale price for the Common Stock, as reported on NASDAQ, was
$7-7/8 per share. On October 13, 1997, the day before the Transactions were
consummated, the last sale price for the Common Stock, as reported on NASDAQ,
was $7-5/8 per share. On February 3, 1998, the last sale price for the Common
Stock, as reported on NASDAQ, was $10.00 per share. The approximate number of
holders of record of the shares of the Common Stock was 234 as of February 3,
1998.
 
    In early 1995, the Company established a distribution policy of basing
future distributions on funds from operations, which the Trust intends to
continue. The Trust's ability to pay cash distributions in the future will be
dependent upon (i) amounts distributed by the Operating Partnership from
properties or interests held by it, (ii) income from the properties held
directly by the Company and (iii) cash generated by financing transactions. The
ability of the Trust to make cash distributions will also be limited by the
terms of the limited partnership agreement of the Operating Partnership (the
"Operating Partnership Agreement") and the Property Financing (as hereinafter
defined) as well as limitations imposed by state law and the agreements
governing any future indebtedness of the Trust or the Operating Partnership. See
"Distribution Policy," "Certain Transactions --The Transactions" and "Federal
Income Tax Considerations--Taxation of the Trust--Annual Distribution
Requirements."
 
                                       8
<PAGE>
                                  RISK FACTORS
 
    AN INVESTMENT IN THE COMMON SHARES INVOLVES VARIOUS RISKS AND
CONSIDERATIONS. SHAREHOLDERS SHOULD CAREFULLY CONSIDER THE FOLLOWING INFORMATION
IN CONJUNCTION WITH THE OTHER INFORMATION CONTAINED AND INCORPORATED BY
REFERENCE IN THIS PROXY STATEMENT/PROSPECTUS IN EVALUATING THE REFORMATION
BEFORE MAKING A DECISION WITH RESPECT TO THE COMMON SHARES OFFERED HEREBY.
 
RELIANCE ON MAJOR TENANTS
 
    The Trust's two major tenants, Unisys Corporation ("Unisys") and Teleport
Communications Group Inc. ("TCG," which has recently announced the intention to
merge with a subsidiary of AT&T), accounted for 39.6% and 15.5% of Total Rental
Revenue (as hereinafter defined) as of February 1, 1998, respectively. The
Trust's top five tenants accounted for 78.0% of Total Rental Revenue as of such
date. See "Properties--Tenants." In the event that one or more of these tenants
experiences financial difficulties, or defaults on its obligation to make rental
payments to the Trust, the Trust's financial performance and ability to make
expected distributions to shareholders would be materially adversely affected.
 
LACK OF GEOGRAPHICAL DIVERSITY
 
    A substantial portion of the Trust's properties are located in the
Philadelphia region and, to a lesser extent, the Princeton region. Over 74.3% of
Total Rental Revenue as of February 1, 1998 was derived from office properties
in the Philadelphia and Princeton markets. As a result, the Trust does not have
the benefits of portfolio geographic diversity and is subject to any issues
selectively affecting these regions. Therefore, in the long-term, based upon the
properties currently owned directly or indirectly by the Trust, the Trust's
financial performance and ability to make expected distributions to shareholders
is dependent upon the Philadelphia and Princeton markets. There can be no
assurance as to the stability or growth conditions of the Philadelphia and
Princeton markets.
 
RISK OF INABILITY TO SUSTAIN DISTRIBUTION LEVEL
 
    The Trust initially intends to maintain the distribution level of the
Company. However, the level of distributions is based on a number of
assumptions, including assumptions relating to future operations of the Trust.
These assumptions concern, among other matters, continued property occupancy and
profitability of tenants, distributions received from the Operating Partnership,
the amount of future capital expenditures and expenses relating to the Trust's
properties, the level of leasing activity and future rental rates, the strength
of the commercial real estate market, competition, the costs of compliance with
environmental and other laws, the amount of uninsured losses and decisions by
the Trust to reinvest rather than distribute cash available for distribution.
The Trust currently expects to maintain its initial distribution level
throughout 1998. A number of the assumptions described above, however, are
beyond the control of the Trust. Accordingly, no assurance can be given that the
Trust will be able to maintain its distribution level.
 
EFFECTS OF OWNERSHIP LIMIT, CLASSIFIED BOARD AND POWER TO ISSUE ADDITIONAL
  SHARES
 
    POTENTIAL EFFECTS OF OWNERSHIP LIMITATION.  For the Trust to maintain its
qualification as a REIT under the Code, not more than 50% in value of the
outstanding shares of beneficial interest of the Trust may be owned, directly or
indirectly, by five or fewer persons (defined in the Code to include certain
entities) at any time during the last half of any taxable year. See "Federal
Income Tax Considerations--Taxation of the Trust." The Declaration of Trust
authorizes the Board of Trustees, subject to certain exceptions, to take such
actions as may be necessary or desirable to preserve its qualification as a REIT
and to limit any person to direct or indirect ownership of no more than (i) 9.8%
of the Trust's number of issued and outstanding shares of beneficial interest,
or (ii) 9.8% of the total equity value of such shares of beneficial interest
(the "Ownership Limit"). The Board of Trustees, upon such conditions as the
Board of Trustees, in
 
                                       9
<PAGE>
its sole discretion, may establish (which may include receipt of an appropriate
ruling from the Internal Revenue Service (the "Service") or an opinion of
counsel), may exempt a proposed transferee from the Ownership Limit. However,
the Board of Trustees may not grant an exemption from the Ownership Limit to any
proposed transferee whose ownership, direct or indirect, of shares of beneficial
interest of the Trust in excess of the Ownership Limit would result in the
termination of the Trust's status as a REIT. The Board of Trustees has exempted
the Common Shares to be issued in the Reformation in exchange for the shares of
Common Stock originally issued in the Transactions from the Ownership Limit, as
well as the Common Shares to be issued following redemption of the units of
limited partnership interest in the Operating Partnership ("Units") issued in
the Transactions. For an indication of the number of such Common Shares, see
"Security Ownership of Management and Others" and "Certain Transactions--The
Transactions." A transfer of Common Shares in violation of the above limits may
result in the constructive transfer of the Common Shares to a trust administered
for charitable purposes and/or trigger the Trust's right to repurchase such
Common Shares. The foregoing restrictions on transferability and ownership will
continue to apply until the Board of Trustees determines that it is no longer in
the best interests of the Trust to attempt to qualify, or to continue to
qualify, as a REIT. The Ownership Limit may have the effect of delaying,
deferring or preventing a change in control of the Trust or other transaction
that might involve a premium over the then prevailing market price for the
Common Shares or other attributes that the shareholders may consider to be
desirable. See "Proposal 1--Reformation of the Company--Description of Shares of
Beneficial Interest--Restrictions on Transfer."
 
    POTENTIAL EFFECTS OF STAGGERED ELECTIONS OF TRUSTEES.  If the Reformation is
approved by Shareholders, the Board of Trustees will assume the responsibilities
currently exercised by the Board. The Board of Trustees is divided into three
classes of trustees (the "Trustees"). The initial terms of the first, second and
third classes of the Trustees will expire in 1999, 2000 and 2001, respectively.
Beginning in 1999, Trustees of each class will be chosen for three-year terms
upon the expiration of their current terms and one class of Trustees will be
elected by the shareholders each year. The staggered terms of the Trustees may
reduce the possibility of a tender offer or an attempt to change control of the
Trust, even though a tender offer or change in control might be considered by
the shareholders to be desirable. See "Proposal 1--Reformation of the
Company--Comparison of Rights of Shareholders of the Company and Shareholders of
the Trust-- Classified Board."
 
    POTENTIAL EFFECTS OF ISSUANCE OF ADDITIONAL SHARES; OTHER MATTERS.  The
Trust's Declaration of Trust authorizes the Board of Trustees to (i) amend the
Declaration of Trust, without shareholder approval, to increase or decrease the
aggregate number of shares of beneficial interest of any class, including Common
Shares, that the Trust has the authority to issue, (ii) cause the Trust to issue
additional authorized but unissued Common Shares or preferred shares of
beneficial interest, par value $0.01 per share (the "Preferred Shares"), and
(iii) classify or reclassify any unissued Common Shares and Preferred Shares and
to set the preferences, rights and other terms of such classified or
unclassified shares. See "Proposal 1-- Reformation of the Company--Description
of Shares of Beneficial Interest." The Company is presently considering issuing
in the near term for cash, either in a private placement or through a public
offering, a significant amount of Common Shares. In addition, the Company is
likely to issue directly, or through the issuance of Units by the Operating
Partnership, a substantial number of Common Shares, or Units redeemable or
exchangeable for Common Shares, in connection with acquisitions. The Company is
presently exploring a number of potential acquisitions, some of which could be
material and a number of which could be effected in the near term in the event
the Company's explorations are successful. In addition, although the Board of
Trustees has no intention to do so at the present time, it will be authorized
pursuant to these provisions to establish a class or series of shares of
beneficial interest that could, depending on the term of such series, delay,
defer or prevent a change in control of the Trust or other transaction that
might involve a premium over the then prevailing market price for the Common
Shares or other attributes that the shareholders may consider to be desirable.
The Declaration of Trust, the Maryland Bylaws and Maryland law also contain
other provisions that may have the effect of delaying, deferring or preventing a
change in control of the Trust or other transaction that might involve a premium
 
                                       10
<PAGE>
over the then prevailing market price for the Common Shares or other attributes
that the shareholders may consider to be desirable. See "Proposal 1--Reformation
of the Company--Comparison of Rights of Shareholders of the Company and
Shareholders of the Trust--Removal of Directors and Trustees," "-- Control Share
Acquisitions" and "--Advance Notice of Nominations and New Business."
 
    Holders of Units have the right to cause the Operating Partnership to redeem
their Units on the occurrence of certain events, including a transaction
resulting in a group becoming the beneficial owner of 20% or more of the Common
Shares (other than Permitted Holders, as defined in the Operating Partnership
Agreement) or a merger or consolidation involving the Trust. The Trust has the
option to deliver cash or Common Shares in satisfaction of such redemption
obligation. See "Certain Transactions-- The Transactions." This redemption
provision may have the effect of delaying, deferring or preventing a change in
control of the Trust or other transaction that might involve a premium over the
then prevailing market price for the Common Shares or other attributes that the
shareholders may consider to be desirable. In addition, there is no limit on the
ability of the Operating Partnership to issue additional Units, which Units may
be convertible or redeemable for Common Shares. See "--Possible Adverse Effect
of Shares Available for Future Sale on Price of Common Shares." Existing
shareholders will have no preemptive right to acquire any such equity
securities, and any such issuance of equity securities could result in dilution
of an existing shareholder's investment in the Trust.
 
    The issuance of Common Shares or Preferred Shares discussed above could have
a dilutive effect on shareholders.
 
TAX RISKS
 
    FAILURE TO QUALIFY AS A REIT.  The Company was organized and has operated,
and the Trust intends to operate, so as to qualify as a REIT for federal income
tax purposes. The Trust has not requested, and does not expect to request, a
ruling from the Service that it qualifies as a REIT. The Trust has received an
opinion of its counsel that, based upon certain assumptions and representations,
the Company has so qualified and the Trust will continue to so qualify.
Shareholders should be aware, however, that opinions of counsel are not binding
on the Service or any court. The REIT qualification opinion only represents the
view of counsel to the Trust based upon such counsel's review and analysis of
existing law, which includes no controlling precedent. Furthermore, both the
validity of the opinion and the qualification of the Trust as a REIT will depend
on the Trust's continuing ability to meet various requirements concerning, among
other things, the ownership of its outstanding stock, the nature of its assets,
the sources of its income and the amount of its distributions to its
shareholders. There can be no assurance that the Trust will do so successfully.
See "Federal Income Tax Considerations--Taxation of the Trust."
 
    If the Trust were to fail to qualify as a REIT for any taxable year, the
Trust would not be allowed a deduction for distributions to its shareholders in
computing its taxable income and would be subject to federal income tax
(including any applicable minimum tax) on its taxable income at regular
corporate rates. Unless entitled to relief under certain Code provisions, the
Trust also would be disqualified from treatment as a REIT for the four taxable
years following the year during which qualification was lost. As a result, cash
available for distribution would be reduced for each of the years involved.
Although management intends to operate the Trust in a manner designed to meet
the REIT qualification requirements, it is possible that future economic,
market, legal, tax or other considerations may cause the Board of Trustees to
revoke the REIT election. See "Federal Income Tax Considerations."
 
    To qualify as a REIT, a company must establish, among other things, that it
is not "closely held" (i.e., during the last half of each taxable year, not more
than 50% in value of a company's outstanding stock may have been owned, actually
or constructively, by five or fewer individuals (as defined in the Code to
include certain entities)). In order to ascertain the actual ownership of a
company's outstanding shares, Treasury Regulations require that the company
demand from certain shareholders written statements disclosing the
 
                                       11
<PAGE>
actual owners of the company's stock. The Company unintentionally made required
demands for shareholder statements later than the time permitted by the
regulations for its taxable years 1994 through 1996 (and failed to make such
demands for its taxable years 1992 and 1993, which are generally closed years
for purposes of the assessment of federal income tax). As a consequence, the
Service may contend that the Company failed to qualify as a REIT for some or all
of such years. The Company, however, believes that it has substantially complied
with the purposes of the shareholder demand regulation. At its own initiative,
the Company requested that the Service enter into a closing agreement with the
Company whereby the Service would agree not to treat the Company as failing to
qualify as a REIT because of the Company's failure strictly to comply with the
shareholder demand regulation. The Service has not yet advised the Company
whether it will enter into such closing agreement, although the Company has been
advised that the Service has in some cases agreed to enter into such agreements
under similar circumstances. The Service has given no indication that it intends
to challenge the Company's qualification as a REIT for a failure to make the
shareholder demands. If such a challenge were successfully made, the Company
believes that any liability for income taxes and interest for the taxable years
1994 through 1996 could be material. If the Service were successful in
challenging the Company's REIT status for failure to satisfy the shareholder
demand regulation, the Company's qualification as a REIT for 1997 would depend
on the Company's ability to prove that its failure to make the shareholder
demands was due to reasonable cause and not due to willful neglect. Otherwise,
the Company and the Trust could not elect REIT status, potentially until 1999.
The Company estimates that if it were unable to elect REIT status until 1999,
the Company's and the Trust's aggregate liability for income taxes and interest
for the years 1994 through 1996 would be approximately $165,000 plus applicable
interest. An additional tax liability could also fall due with respect to tax
years 1997 and 1998.
 
    OTHER TAX LIABILITIES.  Even if the Trust qualifies as a REIT, it will be
subject to certain state and local taxes on its income and property, and may be
subject to certain federal taxes. In connection with the Reformation, the Trust
will be formed as a Maryland business trust and treated as a corporation for tax
purposes. Generally, all corporations operating in Pennsylvania are subject to
the Pennsylvania Corporate Net Income Tax ("CNI") and the Pennsylvania Capital
Stock/Foreign Franchise Tax ("CS/FF") apportioned to Pennsylvania based on that
corporation's activities within the Commonwealth. However, a foreign business
trust that confines its activities in Pennsylvania to the maintenance,
administration and management of intangible investments and qualifies as a REIT
under Section 856 of the Code or a qualified REIT subsidiary under Section
856(i) of the Code is not subject to the CS/FF or CNI. If the Trust were to fail
to qualify as REIT for any tax year, the Trust would be subject to CNI and CS/FF
based upon the Trust's income and equity apportioned to Pennsylvania.
 
    In the Transactions, the transfers of partnership interests to the Operating
Partnership relating to the properties located in Pennsylvania were structured
as transfers of 89% of the capital interests with the remaining interests to be
acquired by the Operating Partnership not later than December 2000. This
structure is intended to comply with informal advice from the Pennsylvania
Department of Revenue that such transfers are not subject to Pennsylvania real
estate transfer taxes. However, the Trust has not obtained a formal ruling from
the Pennsylvania Department of Revenue on this issue. If the Pennsylvania
Department of Revenue were to successfully challenge this structure, or the
remaining interests were required to be transferred for financing or other
purposes prior to October 14, 2000, the Operating Partnership would be subject
to Pennsylvania state and local transfer taxes of approximately $2.7 million.
 
    REIT MINIMUM DISTRIBUTION REQUIREMENTS; POSSIBLE INCURRENCE OF ADDITIONAL
DEBT.  In order to qualify as a REIT, the Trust generally will be required each
year to distribute to its shareholders at least 95% of its net taxable income
(excluding any net capital gain). In addition, the Trust will be subject to a 4%
nondeductible excise tax on the amount, if any, by which certain distributions
paid by it with respect to any calendar year are less than the sum of (i) 85% of
its ordinary income for that year, (ii) 95% of its capital gain net income for
that year and (iii) 100% of its undistributed taxable income from prior years.
The Trust intends to make distributions to its shareholders to comply with the
95% distribution requirement and to
 
                                       12
<PAGE>
avoid the nondeductible excise tax. The Trust's income will consist primarily of
its share of the income of the Operating Partnership and, to a significantly
lesser extent, from the properties it owns directly, and the cash available for
distribution by the Trust to its shareholders will consist of its share of cash
distributions from the Operating Partnership and, to a significantly lesser
extent, cash flow from the properties it owns directly together with funds
available to it from borrowings. Differences in timing between (i) the actual
receipt of income and actual payment of deductible expenses and (ii) the
inclusion of such income and deduction of such expenses in arriving at taxable
income of the Trust could require the Trust, directly or indirectly through the
Operating Partnership, to borrow funds on a short-term basis to meet the 95%
distribution requirement and to avoid the nondeductible excise tax. See "--Real
Estate Financing Risks."
 
CONFLICTS OF INTEREST
 
    RISKS RELATING TO STRUCTURE.  The Company currently owns its retail
properties directly and its interest in the office properties indirectly through
its interests in the Operating Partnership and the Properties Partnerships (as
hereinafter defined). Certain of the Trustees and the Company's directors,
including Messrs. Shidler and Hamlin, are limited partners of the Operating
Partnership ("Limited Partners") and are limited partners in certain of the
Properties Partnerships. Certain Trustees and directors also own Preferred Units
(as defined in the Operating Partnership Agreement) which receive a priority
return to the Partnership Units (as defined in the Operating Partnership
Agreement) held by the Company, and it is anticipated that additional Preferred
Units will be sold in the future. See "Certain Transactions--The Transactions."
As a result, there are basically two pools of assets in which the Company has
differing interests and conflicts of interest may arise concerning, among other
things, the allocation of resources (financial or otherwise) between asset
pools, assets sales and the reduction of indebtedness.
 
    The Trust, as the general partner (the "General Partner") of the Operating
Partnership, may have fiduciary duties to the Limited Partners, the discharge of
which may conflict with interests of the Trust shareholders. Pursuant to the
Operating Partnership Agreement, however, the Limited Partners have acknowledged
that the Trust is acting both on behalf of the Trust shareholders and, in its
capacity as General Partner, on behalf of the Limited Partners. The Limited
Partners have agreed that the Trust will discharge its fiduciary duties to the
Limited Partners by acting in the best interests of the Trust's shareholders.
Limited Partners will also have the right to vote on amendments to the Operating
Partnership Agreement, many of which will require the vote of holders (other
than the Trust) of a majority of the Partnership Units and the Preferred Units,
voting separately, and individually to approve certain amendments that will
adversely affect their rights. These voting rights may be exercised in a manner
that conflicts with the interests of the Trust's shareholders.
 
    In addition, distributions from the Operating Partnership and income from
the retail properties may not be sufficient to both pay the Trust's current
overhead expenses and maintain the current level of distributions to
shareholders. To the extent that there continues to be a mismatch between
expenses and shareholder distributions, on the one hand, and Operating
Partnership distributions and rental income, on the other hand, the Trust would
be required to seek discretionary distributions or loans from the Operating
Partnership, to incur additional indebtedness in order to fund operating
expenses and distributions or to decrease shareholder distributions. See "--Real
Estate Financing Risks." Alternatively, the Trust may seek to issue additional
Common Shares, although the proceeds from such issuance would be required to be
contributed to the Operating Partnership absent a waiver by the Limited
Partners.
 
    In connection with the Transactions, the Company negotiated to receive
allocations in excess of those which it would have been allocated as a result of
its ownership of Partnership Units until December 31, 2000 ("Excess
Allocations"). See "Certain Transactions--The Transactions." However, the
distributions from the Operating Partnership are generally PRO RATA, based upon
each party's interest. As a result, the Trust may be allocated taxable income in
excess of the distributions it receives from the Operating Partnership. Although
the Trust anticipates that it will be able to sustain distributions sufficient
to comply with the REIT annual distribution requirements in the Code from cash
available from properties it owns
 
                                       13
<PAGE>
directly, additional discretionary distributions from the Operating Partnership
or the incurrence of indebtedness, there can be no assurance that such
distributions will be possible.
 
    RISKS RELATED TO OUTSIDE INVESTMENTS.  Mr. Shidler, the Chairman of the
Board, also has interests in a number of other real estate investments,
including First Industrial Realty Trust, Inc., a REIT, of which he is Chairman
of the Board. As a result, Mr. Shidler will only spend a portion of his time on
the Trust's business. Instances may arise in which Mr. Shidler's interests with
respect to his overall activities, or a given investment opportunity, may be
inconsistent with the interests of the Trust. Mr. Hamlin, President, Chief
Executive Officer and a director of the Company, also has interests in a number
of other real estate investments, including First Industrial Realty Trust, Inc.
and TriNet Corporate Realty Trust, Inc. and other REITs. Although Mr. Hamlin has
entered into an employment agreement with the Company which contains a
non-compete clause, there can be no assurance that instances would not arise
which present conflicts of interest. See "Management--Executive Officers and
Trustees."
 
    Entities controlled by Mr. Shidler and Mr. Hamlin also own undeveloped
property contiguous to certain of the Trust's properties. Although all such
entities will grant the Trust an option to acquire these properties at fair
market value, there can be no assurance that the Trust will acquire these
properties. These properties could be developed and compete with the Trust for
tenants.
 
REAL ESTATE INVESTMENT RISKS
 
    GENERAL RISKS.  Real property investments are subject to varying degrees of
risk. The yields available from equity investments in real estate depend in
large part on the amount of rental income earned and capital appreciation
generated, as well as property operating and other expenses incurred. If the
Trust's properties do not generate revenues sufficient to meet operating
expenses of the Operating Partnership and the Trust, including debt service,
tenant improvements, leasing commissions and other capital expenditures, the
Operating Partnership or the Trust may have to borrow additional amounts to
cover fixed costs, and the Trust's financial performance and ability to make
distributions to its shareholders may be adversely affected.
 
    The Trust's revenues and the value of its properties may be adversely
affected by a number of factors, including (i) the national, state and local
economic climate and real estate conditions (such as oversupply of or reduced
demand for space and changes in market rental rates), (ii) the perceptions of
prospective tenants of the attractiveness, convenience and safety of the Trust's
properties, (iii) the ability of the Trust to provide adequate management,
maintenance and insurance, (iv) the ability to collect all rent from tenants on
a timely basis, (v) the expense of periodically renovating, repairing and
reletting spaces and (vi) increasing operating costs (including real estate
taxes and utilities) to the extent that such increased costs cannot be passed
through to tenants. Certain significant costs associated with investments in
real estate (such as mortgage payments, real estate taxes, insurance and
maintenance costs) generally are not reduced when circumstances cause a
reduction in rental revenues from the property and vacancies result in loss of
the ability to receive tenant reimbursements of operating costs customarily
borne by commercial real estate tenants. In addition, real estate values and
income from properties are also affected by such factors as compliance with laws
applicable to real property, including environmental and tax laws, interest rate
levels and the availability of financing. Furthermore, the amount of available
rentable square feet of commercial property is often affected by market
conditions and may therefore fluctuate over time.
 
    TENANT DEFAULTS AND BANKRUPTCY.  Substantially all of the Trust's income
will be derived, directly or through distributions from the Operating
Partnership, from rental income from properties. The distributable cash flow and
ability to make expected distributions to shareholders would be adversely
affected if a significant number of the Trust's tenants failed to meet their
lease obligations. Tenants may seek the protection of the bankruptcy laws, which
could result in delays in rental payments or in the rejection and termination of
such tenant's lease and thereby cause a reduction in the Trust's cash flow and
the amounts available for distributions to its shareholders. No assurance can be
given that tenants will not file for
 
                                       14
<PAGE>
bankruptcy protection in the future or, if any tenants file, that they will
affirm their leases and continue to make rental payments in a timely manner. In
addition, a tenant, from time to time, may experience a downturn in its business
which may weaken its financial condition and result in the failure to make
rental payments when due. If tenant leases are not affirmed following
bankruptcy, or if a tenant's financial condition weakens, the Trust's results of
operations and the amounts available for distribution to its shareholders may be
adversely affected.
 
    OPERATING RISKS.  The Trust's properties will be subject to operating risks
common to commercial real estate in general, any and all of which may adversely
affect occupancy and rental rates. Such properties will be subject to increases
in operating expenses such as cleaning, electricity, heating, ventilation and
air conditioning, maintenance, insurance and administrative costs, and other
general costs associated with security, landscaping, repairs and maintenance.
While the Trust's current tenants generally are obligated to pay a portion of
these escalating costs, there can be no assurance that tenants will agree to pay
all or a portion of such costs upon renewal or that new tenants will agree to
pay such costs. If operating expenses increase, the local rental market may
limit the extent to which rents may be increased to meet increased expenses
without decreasing occupancy rates. While the Trust implements cost-saving
incentive measures at each of its properties, the Trust's results of operations
and ability to make distributions to shareholders could be adversely affected if
operating expenses increase without a corresponding increase in revenues,
including tenant reimbursements of operating costs. In addition, when tenant
leases expire, the Trust may incur significant retenanting costs for leasing
commissions and tenant improvements.
 
    COMPETITION; RISK OF NOT MEETING TARGETED LEVEL OF LEASING ACTIVITY,
ACQUISITIONS AND DEVELOPMENT. Numerous commercial properties compete with the
Trust's properties in attracting tenants to lease space, and additional
properties can be expected to be built in the markets in which the Trust's
properties are located. The number and quality of competitive commercial
properties in a particular area will have a material effect on the Trust's
ability to lease space at its current properties or at newly acquired properties
and on the rents charged. Some of these competing properties may be newer or
better located than the Trust's properties. In addition, the commercial real
estate market is highly competitive particularly within the Mid-Atlantic region
in which the Trust presently operates. There are a significant number of buyers
of commercial property, including other publicly traded commercial REITs, many
of which have significant financial resources. This has resulted in increased
competition in acquiring attractive commercial properties. See "--Real Estate
Investment Risks--Risks Associated with Acquisition, Development and
Construction Activities." Accordingly, it is possible that the Trust may not be
able to meet its targeted level of property acquisitions and developments due to
such competition or other factors which may have an adverse effect on the
Trust's expected growth in operations.
 
    POSSIBLE ENVIRONMENTAL LIABILITIES.  Under various federal, state and local
environmental laws, ordinances and regulations, a current or previous owner or
operator of real property may be liable for the costs of removal or remediation
of hazardous or toxic substances on, under or in such property. Such laws often
impose liability whether or not the owner or operator knew of, or was
responsible for, the presence of such hazardous or toxic substances. In
addition, the presence of hazardous or toxic substances, or the failure to
remediate such property properly, may adversely affect the owner's ability to
borrow using such real property as collateral. Persons who arrange for the
disposal or treatment of hazardous or toxic substances may also be liable for
the costs of removal or remediation of hazardous substances at the disposal or
treatment facility, whether or not such facility is or ever was owned or
operated by such person. Certain environmental laws and common law principles
could be used to impose liability for release of and exposure to hazardous
substances, including asbestos-containing materials ("ACMs"), into the air, and
third parties may seek recovery from owners or operators of real properties for
personal injury or property damage associated with exposure to released
hazardous substances, including ACMs. As the owner of real properties, the Trust
may be potentially liable for any such costs.
 
                                       15
<PAGE>
    Phase I environmental site assessments ("ESAs") were obtained in connection
with the Property Financing for each of the Trust's properties. The purpose of
Phase I ESAs is to identify potential sources of contamination for which a
company may be responsible and to assess the status of environmental regulatory
compliance. Where recommended in the Phase I ESA, invasive procedures, such as
soil sampling and testing or the installation and monitoring of groundwater
wells, were subsequently performed. The Phase I ESAs, including subsequent
procedures where applicable, have not revealed any environmental liability that,
after giving effect to indemnification available to the Trust, the Trust
believes would have a material adverse effect on the Trust's business, assets or
results of operations, nor is the Trust aware of any such material environmental
liability. Nevertheless, it is possible that the indemnification would be
unavailable at the time the Trust sought to make a claim thereunder, the Phase I
ESAs relating to any one of its properties have not revealed all environmental
liabilities or that there are material environmental liabilities of which the
Trust is unaware. Moreover, there can be no assurance that (i) future laws,
ordinances or regulations will not impose any material environmental liability
or (ii) the current environmental condition of the Trust's properties will not
be affected by tenants, by the condition of land or operations in the vicinity
of such properties (such as the presence of underground storage tanks) or by
third parties unrelated to the Trust.
 
    EFFECT OF AMERICANS WITH DISABILITIES ACT COMPLIANCE ON CASH FLOW AND
DISTRIBUTIONS.  Under the Americans with Disabilities Act of 1990 (the "ADA"),
all public accommodations and commercial facilities are required to meet certain
federal requirements related to access and use by disabled persons. Existing
commercial properties generally are subject to provisions requiring that
buildings be made accessible to people with disabilities. Compliance with the
ADA requirements could require removal of access barriers, and non-compliance
could result in imposition of fines by the U.S. government or an award of
damages to private litigants. While the amounts of such compliance costs, if
any, are not currently ascertainable, they are not expected to have a material
effect on the Trust.
 
    CHANGES IN LAWS.  Because increases in income or service taxes may not be
passed through to tenants under some leases, such increases may adversely affect
the Trust's results of operations and its ability to make distributions to
shareholders. In addition, the Trust's properties are subject to various
federal, state and local regulatory requirements and to state and local fire and
lifesafety requirements. Failure to comply with these requirements could result
in the imposition of fines by governmental authorities or awards of damages to
private litigants. The Trust believes that its properties currently are in
material compliance with all such regulatory requirements. However, there can be
no assurance that these requirements will not be changed or that new
requirements will not be imposed which would require significant unanticipated
expenditures by the Trust and could have an adverse effect on the Trust's cash
flow and ability to make expected distributions to shareholders.
 
    UNINSURED LOSSES.  The Trust will generally carry commercial general
liability insurance, standard "all-risk" property insurance, and flood and
earthquake (where appropriate) and rental loss insurance with respect to its
properties with policy terms and conditions customarily carried for similar
properties. No assurance can be given, however, that material losses in excess
of insurance proceeds will not occur in the future which would adversely affect
the business of the Trust and its financial condition and results of operations.
In addition, certain types of losses may be either uninsurable or not
economically insurable. Should an uninsured loss or a loss in excess of insured
limits occur, the Trust could lose its capital invested in a property, as well
as the anticipated future revenue from such property, and would continue to be
obligated on any mortgage indebtedness or other obligations related to the
property.
 
    RISKS ASSOCIATED WITH ILLIQUIDITY OF REAL ESTATE.  Equity real estate
investments are relatively illiquid. Such illiquidity will tend to limit the
ability of the Trust to vary its portfolio promptly in response to changes in
economic or other conditions. In addition, the Code limits the ability of a REIT
to sell properties held for fewer than four years, which may affect the Trust's
ability to sell properties without adversely affecting returns to holders of
Common Shares.
 
                                       16
<PAGE>
    RISKS ASSOCIATED WITH ACQUISITION, DEVELOPMENT AND CONSTRUCTION
ACTIVITIES.  The Trust intends to acquire existing commercial properties to the
extent that they can be acquired on advantageous terms and meet the Trust's
investment criteria. Acquisitions of such properties entail general investment
risks associated with any real estate investment, including the risk that
investments will fail to perform in accordance with expectations or that
estimates of the costs of improvements to bring an acquired property up to the
Trust's standards may prove inaccurate.
 
    The Trust also intends to grow in part through the selective development,
redevelopment and construction of commercial properties, including build-to-suit
properties and speculative development, as suitable opportunities arise.
Additional risks associated with such real estate development and construction
activities include the risk that the Trust may abandon development activities
after expending significant resources to determine their feasibility; the
construction cost of a project may exceed original estimates; occupancy rates
and rents at a newly completed property may not be sufficient to make the
property profitable; financing may not be available on favorable terms for
development of a property; and the construction and lease up of a property may
not be completed on schedule (resulting in increased debt service and
construction costs). Development activities are also subject to risks relating
to inability to obtain, or delays in obtaining, necessary zoning, land-use,
building occupancy and other required governmental permits and authorizations.
If any of the above occur, the Trust's results of operations and ability to make
expected distributions to shareholders could be adversely affected. In addition,
new development activities, regardless of whether they are ultimately
successful, may require a substantial portion of management's time and
attention.
 
REAL ESTATE FINANCING RISKS
 
    As of December 31, 1997, on a pro forma basis after giving effect to the
Reformation, the Trust and the Operating Partnership would have had
approximately $14 million and $100 million of outstanding indebtedness,
respectively, all of which is secured. The indebtedness of the Trust is in the
form of mortgage notes which are non-recourse to any property of the Trust,
other than the specific retail store property or properties collateralizing the
mortgage note, and are subject to prepayment penalties. The Property Financing
matures in October 2000 (subject to an ability, under certain circumstances, to
extend for two additional years). For a description of the indebtedness
outstanding to the Properties Partnerships, see "Description of Property
Financing." The Trust intends to continue to operate in the near term with
higher debt levels than most other REITs. The Declaration of Trust does not
limit the amount of indebtedness that the Trust may incur. In addition, as a
result of, among other things, the annual income distribution requirements
applicable to REITs under the Code, the Trust will be required to rely on
borrowings, either directly or through the Operating Partnership, and other
external sources of financing to fund the costs of new property acquisitions,
capital expenditures and other items. Accordingly, the Trust and the Operating
Partnership will be subject to real estate financing risks, including changes
from period to period in the availability of such financing, the risk that the
Trust's or the Operating Partnership's cash flow may not be sufficient to cover
both required debt service payments and distributions to shareholders and the
risk that indebtedness secured by properties will not be able to be refinanced
or that the terms of such refinancing will not be as favorable as the terms of
existing indebtedness. Each of the Trust's properties, whether directly owned or
owned through the Operating Partnership, has been mortgaged to secure
indebtedness. If the Trust or the Operating Partnership becomes unable to meet
its required mortgage payment obligations, the property or properties subject to
such mortgage indebtedness could be foreclosed upon by or otherwise transferred
to the mortgagee, with a consequent loss of income and asset value to the Trust.
 
    In addition, to the extent the Operating Partnership was unable to meet its
debt service obligations, cash distributions to the Trust could be reduced or
eliminated. The Property Financing contains provisions that could restrict the
ability of the Operating Partnership to make distributions to the Trust. Not
only does the Property Financing specifically limit certain distributions and
contain financial covenants the practical effect of which may require cash to be
retained by the Operating Partnership, but in the event of a default
 
                                       17
<PAGE>
by the Operating Partnership, the lender under the Property Financing could
require the Operating Partnership to significantly curtail or eliminate all
distributions. Any indebtedness incurred in the future by the Operating
Partnership may contain similar limitations and covenants. There can be no
assurance that the lenders under the Property Financing or such future
indebtedness would grant waivers of these provisions. Any reduction in
distributions from the Operating Partnership could require the Trust to reduce
distributions to shareholders or incur debt to maintain the current level of
distributions.
 
POSSIBLE ADVERSE EFFECT OF SHARES AVAILABLE FOR FUTURE SALE ON PRICE OF COMMON
  SHARES
 
    Sales of a substantial number of Common Shares, or the perception that such
sales could occur, could adversely affect the prevailing market price of the
Common Shares. Sales or issuances of Common Shares could have a dilutive effect
on existing shareholders. In addition to the Common Shares offered by the Trust,
2,899,310 Partnership Units and 1,913,545 Preferred Units were outstanding as of
December 31, 1997 which were as of such date convertible under certain
circumstances into an aggregate of 2,899,310 and 6,834,035 Common Shares,
respectively. Holders of the Retained Interests (as hereinafter defined) were
also entitled, as of December 31, 1997, to receive Partnership Units convertible
into 282,508 Common Shares and Preferred Units convertible into 665,905 Common
Shares. Subject to compliance with the Operating Partnership Agreement, the
holders of the Partnership Units (the "Unit Holders") have the right to require
the Operating Partnership to redeem all or a portion of such Partnership Units
beginning on September 1, 1998 for cash. The Operating Partnership has the
option to pay such redemption price in Common Shares, which option it currently
anticipates exercising in the event any Units are redeemed. Each Preferred Unit
is convertible into 3.5714 Partnership Units, subject in turn to the right of
redemption referred to above, beginning on October 1, 1999. Upon the issuance of
Common Shares in satisfaction of the Operating Partnership's redemption
obligations, the Common Shares may be sold in the public market pursuant to
shelf registration statements which the Trust is obligated to file on behalf of
the Unit Holders or pursuant to any available exemptions from registration. See
"Certain Transactions--The Transactions."
 
    Options to purchase a total of 75,000 shares of Common Stock have been
issued by the Company under its existing Stock Option Plan for Directors (the
"Existing Plan") which options will be assumed by the Trust. Following the
adoption of the Plan, the Trust does not intend to issue additional options
under the Existing Plan. See "Proposal 1--Reformation of the Company--Certain
Consequences of the Mergers--Existing Plan." In addition, if approved, up to ten
percent of the Common Shares outstanding from time to time will be available for
grant under the Plan. See "Proposal 2--Adoption of the Plan."
 
    The Trust intends to cause the Operating Partnership to offer additional
Preferred Units and Partnership Units in exchange for property or otherwise.
Existing shareholders will have no preemptive right to acquire any such equity
securities, and any such issuance of equity securities could result in dilution
of an existing shareholder's investment in the Trust. No prediction can be made
concerning the effect that future sales of any of such Common Shares will have
on the market prices of shares.
 
CONTROL OF MANAGEMENT; LIMITS ON CHANGE OF CONTROL
 
    Trustees and executive officers of the Trust, as a group, beneficially
owned, as of December 31, 1997, approximately 40% of the total issued and
outstanding Common Shares (approximately 70% assuming issuance of Common Shares
in satisfaction of the redemption obligations with respect to the Partnership
Units and the Preferred Units owned and to be owned, following contribution of
the Retained Interests to the Operating Partnership in exchange for Units, by
such group, which Common Shares may be issued beginning September 1, 1998 (in
the case of the Partnership Units) and October 1, 1999 (in the case of the
Preferred Units)). See "Security Ownership of Management and Others." The Trust
currently expects that, if permitted under the Operating Partnership Agreement
provisions designed to maintain the Trust's REIT status, in the event of any
redemption, it will elect to deliver Common Shares for such Units. Accordingly,
such Trustees and executive officers will have substantial influence on the
Trust, which influence might not
 
                                       18
<PAGE>
be consistent with the interests of all other shareholders, and may in the
future have a substantially greater influence on the outcome of any matters
submitted to the Trust's shareholders for approval following redemption of the
Units. Officers and directors who beneficially owned, as of December 31, 1997,
40% of the outstanding Common Stock have indicated that they intend to vote
these shares in favor of the Reformation and the Plan. This significant
ownership interest by Trustees and executive officers may have the effect of
delaying, deferring or preventing a change in control of the Trust or other
transaction that might involve a premium over the then prevailing market price
for the Common Shares or other attributes that the shareholders may consider to
be desirable. See "--Conflicts of Interest."
 
POSSIBLE CHANGES IN POLICIES WITHOUT SHAREHOLDER APPROVAL; NO LIMITATION ON DEBT
 
    The Trust's investment, financing and distribution policies, and its
policies with respect to all other activities, including growth, capitalization
and operations, will be determined by the Board of Trustees. The organizational
documents of the Trust do not contain any limitation on the amount of
indebtedness the Trust may incur. Although the Trust's Board of Trustees has no
present intention to do so, these policies may be amended or revised at any time
and from time to time at the discretion of the Board of Trustees without a vote
of the Trust's shareholders. A change in these policies could adversely affect
the Trust's financial condition, results of operations or the market price of
the Common Shares. See "Policies with Respect to Certain Activities."
 
DEPENDENCE ON KEY PERSONNEL
 
    The Trust is dependent on the efforts of its trustees and executive
officers, including the Trust's Chairman of the Board of Trustees, President and
Chief Executive Officer, and Vice President and Chief Investment Officer,
respectively. Although Messrs. Hamlin and Bernheim have each entered into
employment agreements with the Company, there can be no assurance that either of
these individuals will not elect to terminate their agreement. The loss of any
of their services could have an adverse effect on the operations of the Trust.
See "Management."
 
POSSIBLE ADVERSE EFFECT ON PRICE OF COMMON SHARES
 
    One of the factors that is expected to influence the market price of the
Common Shares is the annual distribution rate on the Common Shares. An increase
in market interest rates may lead prospective purchasers of the Common Shares to
demand a higher annual distribution rate from future distributions. Such an
increase in the required distribution rate may adversely affect the market price
of the Common Shares. Moreover, numerous other factors, such as regulatory
action and changes in tax laws, could have a significant impact on the future
market price of the Common Shares. There also can be no assurances that,
following listing, the Trust will continue to meet the criteria for continued
listing of the Common Shares on the NASDAQ.
 
RISKS ASSOCIATED WITH RELIANCE ON FORWARD-LOOKING STATEMENTS
 
    This Proxy Statement/Prospectus contains "forward-looking statements"
relating to, without limitation, future economic performance, plans and
objectives of management for future operations and projections of revenue and
other financial items, which can be identified by the use of forward-looking
terminology such as "may," "will," "should," "expect," "anticipate," "estimate,"
"believe" or "continue" or the negative thereof or other variations thereon or
comparable terminology. The Trust's actual results may differ significantly from
the results discussed in such "forward-looking statements." Factors that could
cause such differences include, but are not limited to, the risks described in
this Risk Factors section of this Proxy Statement/Prospectus.
 
                                       19
<PAGE>
                                  PROPOSAL 1--
                           REFORMATION OF THE COMPANY
 
GENERAL
 
    The Board has unanimously approved a proposal to reform the Company as a
Maryland real estate investment trust. The Company believes that after the
Reformation, the Trust will be organized and will operate in such a manner as to
continue the Company's qualification for taxation as a REIT under Sections 856
through 860 of the Code for its taxable year ending December 31, 1998, and the
Trust intends to operate in such a manner in the future. The Board believes that
the Reformation is in the best interests of the Company and its shareholders.
See "--Board Recommendation; Reasons for the Reformation."
 
    A number of changes will be effected as a result of the Reformation. Such
changes are described below under the headings "--Certain Consequences of the
Mergers" and "--Comparison of Rights of Shareholders of the Company and
Shareholders of the Trust."
 
    In the event this proposal is not adopted, the Company will continue to
operate as a Minnesota corporation.
 
BOARD RECOMMENDATION; REASONS FOR THE REFORMATION
 
    The Board believes that the Reformation constitutes a necessary precondition
to its implementation of the next steps in the growth of the Company. The Board
believes that the terms of the Reformation are fair to and in the best interests
of the Company and its shareholders. In reaching this determination, the Board
consulted with management as well as financial and legal advisors, and
considered the following factors, among others. The Board is presenting the
Reformation in order to change the Company's domicile to Maryland because
Maryland is recognized by REIT analysts and investors as a domicile of choice
for REITs because in part, Maryland has a separate statute for REITs formed as
trusts. Maryland law and the Declaration of Trust provide the Trust much greater
organizational and investment flexibility when compared to the Minnesota law and
the Company's organizational documents. The Board also believes that there are
certain state and local tax benefits which will inure to the Trust. These tax
benefits include the exemption from Pennsylvania capital stock and corporate net
income tax available to REITs organized as business trusts. The new Declaration
of Trust and Bylaws enhance the likelihood of continuity and stability in the
composition of the Board of Trustees and in the policies they formulate. The
Board believes that those changes will allow the Board of Trustees to adapt its
policies as the business of the Trust evolves and to more effectively represent
the interests of all shareholders. The Board considered a number of potentially
negative factors in its deliberations concerning the Reformation. It was noted
that the Declaration of Trust includes a number of provisions that may have the
effect of making it less likely that the Trustees may be removed. In addition,
the Declaration of Trust includes provisions which may have the effect of
delaying, deferring or preventing a change in control of the Trust or other
transaction that might involve a premium over the then prevailing market price
for the Common Shares or other attributes that the shareholders may consider to
be desirable. However, the Trust has elected to "opt out" of certain of these
provisions of Maryland law. The Board believes that the new Trust structure will
benefit all shareholders as it provides greater market acceptance, greater
likelihood of continuity and stability and a firm base for future growth.
 
    The foregoing discussion of the information and factors considered by the
Board is not intended to be exhaustive. In reaching the determination to approve
and recommend the Reformation, in view of the wide variety of factors considered
in connection with its evaluation of the proposed Reformation, the Board did not
find it practical to, and did not, quantify or otherwise attempt to assign any
relative or specific weight to the foregoing factors, and individual directors
may have given different weights to different factors.
 
VOTE REQUIRED
 
    Under Minnesota law, the affirmative vote of a majority of the outstanding
shares of each class of the Company's capital stock entitled to vote on the
proposal is required for approval of the Reformation. The
 
                                       20
<PAGE>
Common Stock is the only class of the Company's capital stock of which shares
are outstanding and is the only class of stock entitled to vote on the proposal
to approve the Reformation. Abstentions and broker non-votes will have the
effect of votes against the proposal to approve the Reformation. The Reformation
may be abandoned or the Merger Agreement may be amended (with certain
exceptions), either before or after shareholder approval has been obtained, if
in the opinion of the Board, circumstances arise that make such action
advisable.
 
    A vote FOR the Reformation proposal will constitute approval of (i) the
Merger Agreement, (ii) the change in the Company's state of formation through
the Mergers, (iii) the Declaration of Trust and (iv) the Maryland Bylaws.
 
    THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS A VOTE FOR THE APPROVAL OF THE
PROPOSAL TO REFORM THE COMPANY AS A MARYLAND REAL ESTATE INVESTMENT TRUST.
 
REFORMATION
 
    The proposed Reformation would be accomplished by (i) merging the Company
into a newly formed Maryland subsidiary corporation (the "Maryland Company")
which will be the surviving corporation of the merger and (ii) immediately
thereafter merging the Maryland Company into the Trust, a newly formed Maryland
subsidiary trust, in each case, pursuant to the Merger Agreement. The Maryland
Company was incorporated in Maryland on January 21, 1998 and the Trust was
formed in Maryland on January 21, 1998, specifically for purposes of the
Reformation, and each has conducted no business and has no material assets or
liabilities. The Reformation is being accomplished through the Company Merger
followed by the Trust Merger because Minnesota law does not permit the direct
merger of a Minnesota corporation into a Maryland real estate investment trust.
The Maryland Company's and the Trust's principal executive offices are each
located at One Logan Square, Suite 1105, Philadelphia, Pennsylvania. The
Reformation would not result in any change in the Company's business, assets or
liabilities and would not result in any relocation of management or other
employees.
 
THE MERGER AGREEMENT
 
    The following is a brief summary of certain provisions of the Merger
Agreement. This summary is qualified in its entirety by reference to the Merger
Agreement which is attached as Appendix A to this Proxy Statement/Prospectus and
is incorporated herein by reference in its entirety.
 
    The Merger Agreement, which has been signed by the Company, the Maryland
Company and the Trust, contains no representations or warranties. The Merger
Agreement does, however, provide that the Trust will use its reasonable best
efforts to have the Common Shares approved for listing on the NASDAQ and will
provide certain indemnification to directors and officers of the Company. In
addition, the obligations of each party to effect the Mergers are subject to the
following conditions: the Registration Statement of which this Proxy
Statement/Prospectus is a part shall have been declared effective in accordance
with the Securities Act; the Merger Agreement shall have been approved by the
requisite vote of Shareholders at the Special Meeting; holders of not more than
5.0% of the Common Stock issued and outstanding on the Record Date shall have
exercised their rights under Section 302A.471 of the MBCA; the Common Shares
shall have been authorized for trading on NASDAQ, subject to official notice of
issuance; no order to restrain, enjoin or otherwise prevent the consummation of
the Mergers shall have been entered by any court or governmental body; and the
Company shall have obtained all necessary consents. Certain of these provisions
may be waived at the direction of the Company.
 
    The Merger Agreement may be terminated by the parties thereto and the
Mergers abandoned by action of the Board, the Board of Trustees and the board of
directors of the Maryland Company, at any time prior to the Effective Time (as
hereinafter defined), before or after the approval by the Shareholders. Subject
to applicable law, the Merger Agreement may also be amended or modified by
agreement of the parties at any time prior to the Effective Time, with respect
to any terms contained therein; PROVIDED,
 
                                       21
<PAGE>
HOWEVER, that after the Reformation has been approved by the Shareholders, no
amendment or modification will change the amount or form of the consideration to
be received by the Shareholders in the Mergers.
 
CERTAIN CONSEQUENCES OF THE MERGERS
 
    EFFECTIVE TIME.  Following approval of the Mergers, the Company will file
appropriate Articles of Merger with the Secretary of State of Minnesota and the
State Department of Assessments and Taxation of Maryland (the "State
Department"), and the Trust will file (i) appropriate Articles of Merger with
the State Department. The Mergers will become effective upon the later of (i)
the filing of the Articles of Merger with the Secretary of State of the State of
Minnesota and (ii) the acceptance for record of the two Articles of Merger by
the State Department (such time, the "Effective Time"). These filings are
anticipated to be made as soon as practicable after the Reformation proposal is
approved by the shareholders of the Company. As a result, the Company Merger and
the Trust Merger will become effective simultaneously and, at the Effective
Time, the separate corporate existence of the Company and the Maryland Company
will cease and shareholders of the Company will become holders of Common Shares.
 
    MANAGEMENT AFTER THE MERGERS.  Immediately after the Mergers, the Trustees
will be composed of the current members of the Board; however, the Trustees of
the Trust will have staggered terms, as described below under "Comparison of
Rights of Shareholders of the Company and Shareholders of the Trust-- Classified
Board." Immediately after the Mergers, the officers of the Company will be the
officers of the Trust with the same duties and responsibilities presently
enjoyed.
 
    SHAREHOLDER RIGHTS.  Certain differences in shareholder rights exist under
the MBCA and Title 8 of the Corporations and Associations Article of the
Annotated Code of Maryland, as amended (the "Maryland REIT Law") and the
organizational documents of the Company and the Trust. See "-- Comparison of
Rights of Shareholders of the Company and Shareholders of the Trust" for a more
complete discussion of the effects of the differences between the rights of
shareholders under the MBCA and the Maryland REIT Law and the respective
organizational documents of the Company and the Trust.
 
    CONVERSION OF COMMON STOCK.  As a result of the Reformation, each
outstanding share of Common Stock of the Company will automatically be converted
into one Common Share. Because of various differences between Minnesota and
Maryland law and between the Minnesota Articles and Minnesota Bylaws (each as
defined below) and the Declaration of Trust and Maryland Bylaws (see
"--Comparison of Rights of Shareholders of the Company and Shareholders of the
Trust"), the rights and obligations of holders of the Common Stock will change
in material respects as a result of the Reformation. The Common Shares will be
listed for trading on NASDAQ under the same symbol as the Company's Common
Stock.
 
    EXCHANGE OF COMMON STOCK.  Promptly after the Effective Time, the Trust
shall mail to each record holder, as of the Effective Time, of an outstanding
certificate or certificates which immediately prior to the Effective Time
represented shares of Common Stock (the "Certificates") a form letter of
transmittal and instructions for use in effecting the surrender of the
Certificates for exchange. SHAREHOLDERS SHOULD NOT SEND IN THEIR CERTIFICATES
UNTIL THEY RECEIVE A TRANSMITTAL FORM. Upon surrender to the Trust of a
Certificate, together with such letter of transmittal duly executed and any
other required documents, the holder such Certificate shall be entitled to
receive from the Trust in exchange therefor a certificate representing the
number of Common Shares equal to the number of shares of Common Stock
represented by the Certificate, and such Certificate shall forthwith be
canceled. If any Common Shares are to be issued to a person other than the
person in whose name the Certificate surrendered is registered, it shall be a
condition of exchange that the Certificate so surrendered shall be properly
endorsed or otherwise be in proper form for transfer and that the person
requesting such exchange shall pay any transfer or other taxes required by
reason of the exchange of the Certificate surrendered to a person other than the
registered holder or such person shall establish to the satisfaction of the
Trust that such tax has been paid or is not
 
                                       22
<PAGE>
applicable. Until surrendered, each Certificate shall represent, for all
purposes, the right to receive one Common Share for each share of Common Stock
evidenced by such Certificate, without any interest thereon. Failure of a
shareholder to surrender his or her Certificates shall not result in the
forfeiture of the right to receive distributions or to vote the Common Shares
issuable to such shareholder.
 
    NUMBER OF COMMON SHARES OUTSTANDING.  The number of outstanding Common
Shares immediately following the Reformation will equal the number of shares of
Common Stock of the Company outstanding immediately prior to the Effective Time.
 
    EXISTING PLAN.  The Existing Plan will be continued by the Trust following
the Reformation. Approval of the proposed Reformation will constitute approval
of the adoption and assumption of the Existing Plan by the Trust. All options
outstanding under the Existing Plan will be converted into options or rights to
acquire Common Shares.
 
    FEDERAL INCOME TAX CONSEQUENCES.  The Company believes that the Reformation
will be tax-free under the Code. Accordingly, (i) no gain or loss will be
recognized by the holders of shares of Common Stock who exchange such shares for
Common Shares as a result of the Reformation, and (ii) no gain or loss will be
recognized by the Company or the Trust as a result of the Reformation. Each
former holder of shares of Common Stock will have the same tax basis in the
Common Shares received by such holder pursuant to the Reformation as such holder
has in the shares of Common Stock held by such holder at the Effective Time.
Each shareholder's holding period with respect to the Common Shares will include
the period during which such holder held the shares of Common Stock, so long as
the latter were held by such holder as a capital asset at the Effective Time.
The Company has not obtained, and does not intend to obtain, a ruling from the
Service with respect to the tax consequences of the Reformation.
 
    The foregoing is only a summary of certain federal income tax consequences.
Shareholders should consult their own tax advisors regarding the federal tax
consequences of the Reformation, and the consequences of dissenting from the
Reformation, as well as any tax consequences arising under the laws of any other
jurisdiction.
 
ACCOUNTING TREATMENT OF THE MERGERS
 
    Upon consummation of the merger, all assets and liabilities of the Company
will be transferred to the Trust at book value because the Reformation will be
accounted for as if it were a pooling of interests.
 
RIGHTS OF DISSENTING SHAREHOLDERS
 
    THE COMPANY MERGER.  Section 302A.471 of the MBCA grants any shareholder of
the Company of record on February 11, 1998 and certain beneficial owners on such
date who object to the Company Merger the right to have the Company purchase the
shares of Common Stock owned by the dissenting shareholder at their fair value
at the effective time of the Company Merger. It is a condition to the Mergers
that shareholders holding less than 5.0% of the outstanding Common Stock shall
have exercised their dissenter's rights. It is the present intention of the
Company to abandon the Reformation in the event shareholders exercise
dissenter's rights and the Company becomes obligated to make a substantial
payment to said dissenting shareholders.
 
    To be entitled to payment, the dissenting shareholder must file, prior to
the vote for the proposed Reformation, a written notice of intent to demand
payment of the fair value of the shares and must not vote in favor of the
proposed Reformation; provided, that such demand shall be of no force and effect
if the proposed Reformation is not effected. A beneficial owner must also submit
a consent from the record shareholder. The submission of a blank proxy will
constitute a vote in favor of the Reformation and a waiver of dissenter's
rights. The Company's liability to dissenting shareholders for the fair value of
the shares shall also be the liability of the Trust when and if the Reformation
is consummated. Any shareholder contemplating the exercise of these dissenter's
rights should review carefully the provisions of Sections 302A.471 and 302A.473
of the MBCA, particularly the procedural steps required to perfect such rights.
 
                                       23
<PAGE>
SUCH RIGHTS WILL BE LOST IF THE PROCEDURAL REQUIREMENTS OF SECTIONS 302A.471 AND
302A.473 ARE NOT FULLY AND PRECISELY SATISFIED. A COPY OF SECTIONS 302A.471 AND
302A.473 IS ATTACHED AS APPENDIX E.
 
    Shareholders of the Company who do not demand payment for their shares as
provided above and in Section 302A.473 of the MBCA shall be deemed to have
assented to the Reformation. A vote against the Reformation, however, is not
necessary to entitle dissenting shareholders to require the Company to purchase
their shares.
 
    If and when the proposed Reformation is approved by shareholders of the
Company and the Merger Agreement is not abandoned by the Board of Directors, the
Company shall notify all shareholders who have properly dissented as provided
above of:
 
        (1) the address to which demand for payment and certificates for shares
    must be sent to obtain payment and the date by which they must be received;
 
        (2) any restriction on transfer of uncertificated shares that will apply
    after the demand for payment is received;
 
        (3) a form to be used to certify the date on which the shareholder, or
    the beneficial owner on whose behalf the shareholder dissents, acquired the
    shares or an interest in them and to demand payment; and
 
        (4) a copy of Sections 302A.471 and 302A.473 of the MBCA and a brief
    description of the procedures to be followed to obtain payment of the fair
    value for their shares.
 
    To receive the fair value of the shares, a dissenting shareholder must
demand payment and deposit share certificates within 30 days after the notice
was given, but the dissenter retains all other rights of a shareholder until the
proposed action takes effect. Under Minnesota law, notice by mail is given by
the Company when deposited in the United States mail, postage prepaid. A
shareholder who fails to make demand for payment and to deposit certificates
will lose the right to receive the fair value of the shares notwithstanding the
timely filing of the first notice of intent to demand payment. After the
Effective Time, the Company shall remit to the dissenting shareholders who have
complied with the above-described procedures the amount the Company estimates to
be the fair value of such shareholder's shares, plus interest. Payment must be
accompanied by certain information, including prescribed financial statements, a
statement of the method used in arriving at the estimate of fair value and a
copy of Sections 302A.471 and 302A.473.
 
    If a dissenter believes that the amount remitted by the Company is less than
the fair value of the shares, with interest, the shareholder may give written
notice to the Company of the dissenting shareholder's estimate of fair value,
with interest, within 30 days after the Company mails such remittance and demand
payment of the difference. UNLESS A SHAREHOLDER MAKES SUCH A DEMAND WITHIN SUCH
THIRTY-DAY PERIOD, THE SHAREHOLDER WILL BE ENTITLED ONLY TO THE AMOUNT REMITTED
BY THE COMPANY.
 
    Within 60 days after the Company receives such a demand from a shareholder,
it will be required either to pay the shareholder the amount demanded or agreed
to after discussion between the shareholder and the Company or to file in court
a petition requesting that the court determine the fair value of the shares,
with interest. All shareholders who have demanded payment for their shares, but
have not reached agreement with the Company, will be made parties to the
proceeding. The court will then determine whether the shareholders in question
have fully complied with the provisions of Section 302A.473 and will determine
the fair value of the shares, taking into account any and all factors the court
finds relevant (including the recommendation of any appraisers that may have
been appointed by the court), computed by any method that the court, in its
discretion, sees fit to use, whether or not used by the Company or a
shareholder. The costs and expenses of the court proceeding will be assessed
against the Company, except that the court may assess part or all of those costs
and expenses against a shareholder whose action in demanding payment is found to
be arbitrary, vexatious or not in good faith.
 
                                       24
<PAGE>
    The fair value of the Company's shares means the fair value of the shares
immediately before the effectiveness of the Company Merger. Under Section
302A.471, a shareholder of the Company has no right at law or equity to set
aside the consummation of the Merger, except if such consummation is fraudulent
with respect to such shareholder or the Company.
 
    Any shareholder making a demand for payment of fair value may withdraw the
demand at any time prior to the determination of the fair value of the shares by
filing written notice of such withdrawal with the Company.
 
    The foregoing summary of the applicable provisions of Sections 302A.471 and
302A.473 of the MBCA is not intended to be a complete statement of such
provisions and is qualified in its entirety by reference to such sections, the
full texts of which are attached as Appendix D to this Proxy Statement.
 
    THE TRUST MERGER.  Maryland law does not provide shareholders with appraisal
rights with respect to the Mergers.
 
DESCRIPTION OF SHARES OF BENEFICIAL INTEREST
 
    The following summary of the terms of the shares of beneficial interest of
the Trust does not purport to be complete and is subject to and qualified in its
entirety by reference to the Declaration of Trust and Maryland Bylaws, copies of
which are attached hereto as Appendices B and C, respectively.
 
    GENERAL.  The Declaration of Trust provides that the Trust may issue up to
45,000,000 Common Shares and 5,000,000 Preferred Shares. Upon the consummation
of the Reformation, assuming no exercise of outstanding options and before
giving effect to the redemption of Units, 2,268,583 Common Shares will be issued
and outstanding and no Preferred Shares will be issued and outstanding. As
permitted by the Maryland REIT Law, the Declaration of Trust contains a
provision permitting the Board of Trustees, without any action by the
shareholders of the Trust, to amend the Declaration of Trust to increase or
decrease the aggregate number of shares of beneficial interest or the number of
shares of any class of shares of beneficial interest that the Trust has
authority to issue. The Trust believes that the power of the Board of Trustees
to issue additional shares of beneficial interest will provide the Trust with
increased flexibility in structuring possible future financings and acquisitions
and in meeting other needs that might arise. The additional shares of beneficial
interest, possibly including Common Shares, will be available for issuance
without further action by the Trust's shareholders, unless action by the
shareholders is required by applicable law or the rules of any stock exchange or
automated quotation system on which the Trust's securities may be listed or
traded. Although the Board of Trustees currently has no intention of doing so,
it could authorize the Trust to issue a class or series of shares that could,
depending on the terms of such class or series, delay, defer or prevent a change
in control of the Trust or other transaction that might involve a premium over
the then prevailing market price for the Common Shares or other attributes that
the shareholders may consider to be desirable.
 
    Both the Maryland REIT Law and the Trust's Declaration of Trust provide that
no shareholder of the Trust will be personally liable for any obligation of the
Trust solely as a result of such shareholder's status as a shareholder of the
Trust. The Trust's Declaration of Trust further provides that the Trust shall
indemnify each shareholder against any claim or liability to which the
shareholder may become subject by reason of such shareholder's being or having
been a shareholder or former shareholder, subject to such shareholder providing
notice to the Trust, and that the Trust shall pay or reimburse each shareholder
or former shareholder for all legal and other expenses reasonably incurred by
such shareholder in connection with any claim or liability unless it is
established by a court that such claim or liability arose out of such
shareholder's bad faith, willful misconduct or gross negligence. Inasmuch as the
Trust carries public liability insurance which it considers adequate, any risk
of personal liability to shareholders is limited to situations in which the
Trust's assets plus its insurance coverage would be insufficient to satisfy the
claims against the Trust and its shareholders.
 
                                       25
<PAGE>
    COMMON SHARES.  All Common Shares will be duly authorized, fully paid and
nonassessable. Subject to the preferential rights of any other shares or series
of beneficial interest and to the provisions of the Trust's Declaration of Trust
regarding the restriction on transfer of Common Shares, holders of Common Shares
are entitled to receive dividends on such shares if, as and when authorized and
declared by the Board of Trustees of the Trust out of assets legally available
therefor and to share ratably in the assets of the Trust legally available for
distribution to its shareholders in the event of its liquidation, dissolution or
winding-up after payment of, or adequate provision for, all known debts and
liabilities of the Trust.
 
    Each outstanding Common Share entitles the holder thereof to one vote on all
matters submitted to a vote of shareholders, including the election of Trustees,
and, except as provided with respect to any other class or series of shares of
beneficial interest, the holders of such Common Shares possess the exclusive
voting power. There is no cumulative voting in the election of Trustees, which
means that the holders of a majority of the outstanding Common Shares can elect
all of the Trustees then standing for election and the holders of the remaining
shares will not be able to elect any Trustees.
 
    Holders of Common Shares have no preference, conversion, sinking fund,
redemption or appraisal rights and have no preemptive rights to subscribe for
any securities of the Trust. Subject to the provisions of the Declaration of
Trust regarding the restriction on transfer of Common Shares, the Common Shares
have equal dividend, distribution, liquidation and other rights.
 
    Under the Maryland REIT Law, a Maryland real estate investment trust
generally cannot amend its declaration of trust or merge unless approved by the
affirmative vote of shareholders holding at least two-thirds of the shares
entitled to vote on the matter unless a lesser percentage (but not less than a
majority of all the votes entitled to be cast on the matter) is set forth in the
real estate investment trust's declaration of trust. The Trust's Declaration of
Trust provides for approval by a majority of the votes cast at a shareholder
meeting by holders of Common Shares entitled to vote on the matter in all
situations permitting or requiring action by the shareholders, except with
respect to: (i) the election of Trustees (which requires a plurality of all the
votes cast at a meeting of shareholders of the Trust at which a quorum is
present), (ii) the removal of Trustees (which requires the affirmative vote of
the holders of two-thirds of the outstanding shares of beneficial interest of
the Trust entitled to vote generally in the election of Trustees, which action
can only be taken for cause by vote at a shareholder meeting), (iii) the merger
or sale (or other disposition) of all or substantially all of the assets of the
Trust (which requires the affirmative vote of the holders of two-thirds of the
outstanding shares entitled to vote on the matter, which action can only be
taken by vote at a shareholder meeting), (iv) the amendment of the Declaration
of Trust by shareholders (which requires the affirmative vote of two-thirds of
all the votes entitled to be cast on the matter) and (v) the dissolution of the
Trust (which requires the affirmative vote of two-thirds of the outstanding
shares entitled to vote on the matter). As allowed under the Maryland REIT Law,
the Trust's Declaration of Trust permits (a) the Trustees by a two-thirds vote
to amend the Declaration of Trust from time to time to qualify as a real estate
investment trust under the Code or the Maryland REIT Law without the approval of
the shareholders and (b) the Trustees by a majority vote, without any action by
the shareholders of the Trust, to amend the Declaration of Trust to increase or
decrease the aggregate number of shares of beneficial interest or the number of
shares of any class of shares of beneficial interest that the Trust has
authority to issue.
 
    CLASSIFICATION OR RECLASSIFICATION OF COMMON SHARES OR PREFERRED
SHARES.  The Declaration of Trust authorizes the Board of Trustees to classify
any unissued Preferred Shares and to reclassify any previously classified but
unissued Preferred Shares of any series from time to time in one or more series,
as authorized by the Board of Trustees. Prior to issuance of shares of each
series, the Board of Trustees is required by the Maryland REIT Law and the
Trust's Declaration of Trust to set for each such series, subject to the
provisions of the Trust's Declaration of Trust regarding the restriction on
transfer of shares of beneficial interest, the terms, the preferences,
conversion or other rights, voting powers, restrictions, limitations as to
dividends or other distributions, qualifications and terms or conditions of
redemption for each such series. Thus, the Board of Trustees could authorize the
issuance of Preferred Shares with terms
 
                                       26
<PAGE>
and conditions which could have the effect of delaying, deferring or preventing
a change in control of the Trust or other transaction that might involve a
premium over the then prevailing market price for Common Shares or other
attributes that the shareholders may consider to be desirable. As of the date
hereof, no Preferred Shares are outstanding.
 
    RESTRICTIONS ON TRANSFER.  For the Trust to qualify as a REIT under the
Code, its shares of beneficial interest generally must be beneficially owned by
100 or more persons during at least 335 days of a taxable year of twelve months
or during a proportionate part of a shorter taxable year. Also, not more than
50% of the value of the outstanding shares of beneficial interest may be owned,
directly or indirectly, by five or fewer individuals (as defined in the Code to
include certain entities) during the last half of a taxable year (other than the
first year for which an election to be a REIT has been made).
 
    The Declaration of Trust, subject to certain exceptions, contains certain
restrictions on the number of shares of beneficial interest of the Trust that a
person may own. The Declaration of Trust provides that no person may own, or be
deemed to own by virtue of the attribution provisions of the Code, more than
9.8% (the "Aggregate Share Ownership Limit") of the number or value of the
outstanding shares of beneficial interest of the Trust. In addition, the
Declaration of Trust prohibits any person from acquiring or holding, directly or
indirectly, Common Shares in excess of 9.8% (in value or in number of shares,
whichever is more restrictive) of the aggregate of the outstanding Common Shares
(the "Common Share Ownership Limit").
 
    The Board of Trustees, in its sole discretion, may exempt a proposed
transferee from the Aggregate Share Ownership Limit and the Common Share
Ownership Limit (an "Excepted Holder"). However, the Board of Trustees may not
grant such an exemption to any person if such exemption would result in the
Trust being "closely held" within the meaning of Section 856(h) of the Code or
otherwise would result in the Trust failing to qualify as a REIT. In order to be
considered by the Board of Trustees as an Excepted Holder, a person also must
not own, directly or indirectly, an interest in a tenant of the Trust (or a
tenant of any entity owned or controlled by the Trust) that would cause the
Trust to own, directly or indirectly, an interest in a tenant of the Trust (or a
tenant of any entity owned or controlled by the Trust) that would cause the
Trust to own, directly or indirectly, more than a 9.9% interest in such a
tenant. The person seeking an exemption must represent to the satisfaction of
the Board of Trustees that it will not violate the two aforementioned
restrictions. The person also must agree that any violation or attempted
violation of any of the foregoing restrictions will result in the automatic
transfer of the shares of stock causing such violation to the Share Trust (as
defined below). The Aggregate Share Ownership Limit and the Common Share
Ownership Limit do not apply to the Common Shares to be issued in the
Reformation in exchange for Common Stock originally issued in the Transactions,
as well as Common Shares to be issued following redemption of Units issued in
the Transactions. The Board of Trustees may require a ruling from the Service or
an opinion of counsel, in either case in form and substance satisfactory to the
Board of Trustees, in its sole discretion, in order to determine or ensure the
Trust's status as a REIT.
 
    The Declaration of Trust further prohibits (a) any person from beneficially
or constructively owning shares of beneficial interest of the Trust that would
result in the Trust being "closely held" under Section 856(h) of the Code or
otherwise cause the Trust to fail to qualify as a REIT and (b) any person from
transferring shares of beneficial interest of the Trust if such transfer would
result in shares of beneficial interest of the Trust being owned by fewer than
100 persons. Any person who acquires or attempts or intends to acquire
beneficial or constructive ownership of shares of beneficial interest of the
Trust that will or may violate any of the foregoing restrictions on
transferability and ownership, or any person who would have owned shares of the
beneficial interest of the Trust that resulted in a transfer of shares to the
Share Trust, is required to give notice immediately to the Trust and provide the
Trust with such other information as the Trust may request in order to determine
the effect of such transfer on the Trust's status as a REIT. The foregoing
restrictions on transferability and ownership will not apply if the Board of
Trustees determines that it is no longer in the best interests of the Trust to
attempt to qualify, or to continue to qualify, as a REIT.
 
                                       27
<PAGE>
    If any transfer of shares of beneficial interest of the Trust occurs which,
if effective, would result in any person beneficially or constructively owning
shares of beneficial interest of the Trust in excess or in violation of the
above transfer or ownership limitations (a "Prohibited Owner"), then that number
of shares of beneficial interest of the Trusts, the beneficial or constructive
ownership of which otherwise would cause such person to violate such limitations
(rounded to the nearest whole share), shall be automatically transferred to a
trust (the "Share Trust") for the exclusive benefit of one or more charitable
beneficiaries (the "Charitable Beneficiary"), and the Prohibited Owner shall not
acquire any rights in such shares. Such automatic transfer shall be deemed to be
effective as of the close of business on the Business Day (as defined in the
Declaration of Trust) prior to the date of such violative transfer. Shares of
beneficial interest held in the Share Trust shall be issued and outstanding
shares of beneficial interest of the Trust. The Prohibited Owner shall not
benefit economically from ownership of any shares of beneficial interest held in
the Share Trust, shall have no rights to dividends and shall not possess any
other rights attributable to the shares of beneficial interest held in the Share
Trust. The trustee of the Share Trust (the "Share Trustee") shall have all
voting rights and rights to dividends or other distributions with respect to
shares of beneficial interest held in the Share Trust, which rights shall be
exercised for the exclusive benefit of the Charitable Beneficiary. Any dividend
or other distribution paid prior to the discovery by the Trust that shares of
beneficial interest have been transferred to the Share Trustee shall be paid by
the recipient of such dividend or distribution to the Share Trustee upon demand,
and any dividend or other distribution authorized but unpaid shall be paid when
due to the Share Trustee. Any dividend or distribution so paid to the Share
Trustee shall be held in Share Trust for the Charitable Beneficiary. The
Prohibited Owner shall have no voting rights with respect to shares of
beneficial interest held in the Share Trust and, subject to Maryland law,
effective as of the date that such shares of beneficial interest have been
transferred to the Share Trust, the Share Trustee shall have the authority (at
the Share Trustee's sole discretion) (i) to rescind as void any vote cast by a
Prohibited Owner prior to the discovery by the Trust that such shares have been
transferred to the Share Trust and (ii) to recast such vote in accordance with
the desires of the Share Trustee acting for the benefit of the Charitable
Beneficiary. However, if the Trust has already taken irreversible action, then
the Share Trustee shall not have the authority to rescind and recast such vote.
 
    Within 20 days of receiving notice from the Trust that shares of beneficial
interest of the Trust have been transferred to the Share Trust, the Share
Trustee shall sell the shares of beneficial interest held in the Share Trust to
a person, designated by the Share Trustee, whose ownership of the shares will
not violate the ownership limitations set forth in the Declaration of Trust.
Upon such sale, the interest of the Charitable Beneficiary in the shares sold
shall terminate and the Share Trustee shall distribute the net proceeds of the
sale to the Prohibited Owner and to the Charitable Beneficiary as follows. The
Prohibited Owner shall receive the lesser of (i) the price paid by the
Prohibited Owner for the shares or, if the Prohibited Owner did not give value
for the shares in connection with the event causing the shares to be held in the
Share Trust (e.g., a gift, devise or other such transaction), the Market Price
(as defined in the Declaration of Trust) of such shares on the day of the event
causing the shares received by the Share Trustee from the sale or other
disposition of the shares held in the Share Trust and (ii) the price per share
received by the Share Trustee from the sale or other disposition of the Common
Shares to be held by the Share Trust. Any net sale proceeds in excess of the
amount payable to the Prohibited Owner shall be paid immediately to the
Charitable Beneficiary. If, prior to the discovery by the Trust that shares of
beneficial interest have been transferred to the Share Trust, such shares are
sold by a Prohibited Owner, then (i) such shares shall be deemed to have been
sold on behalf of the Share Trust and (ii) to the extent that the Prohibited
Owner received an amount for shares that exceeds the amount that such Prohibited
Owner was entitled to receive pursuant to the aforementioned requirement, such
excess shall be paid to the Share Trustee upon demand.
 
    In addition, shares of beneficial interest of the Trust held in the Share
Trust shall be deemed to have been offered for sale to the Trust, or its
designee, at a price per share equal to the lesser of (i) the price per share in
the transaction that resulted in such transfer to the Share Trust (or, in the
case of a devise or gift, the Market Price at the time of such devise or gift)
and (ii) the Market Price on the date the Trust, or its designee, accepts such
offer. The Trust shall have the right to accept such offer until the Share
Trustee has
 
                                       28
<PAGE>
sold the shares of beneficial interest held in the Share Trust. Upon such a sale
to the Trust, the interest of the Charitable Beneficiary in the shares sold
shall terminate and the Share Trustee shall distribute the net proceeds of the
sale to the Prohibited Owner.
 
    All certificates representing Common Shares will bear a legend referring to
the restrictions described above.
 
    Every owner of more than 5% (or such other percentage as required by the
Code or the regulations promulgated thereunder) of all classes or series of the
Trust's shares of beneficial interest, including Common Shares, within 30 days
after the end of each taxable year, is required to give written notice to the
Trust stating the name and address of such owner, the number of shares of each
class and series of shares of beneficial interest of the Trust which the owner
beneficially owns and a description of the manner in which such shares are held.
Each such owner shall provide to the Trust such additional information as the
Trust may request in order to determine the effect, if any, of such beneficial
ownership on the Trust's status as a REIT and to ensure compliance with the
Aggregate Share Ownership Limit. In addition, each shareholder shall upon demand
be required to provide to the Trust such information as the Trust may request,
in good faith, in order to determine the Trust's status as a REIT and to comply
with the requirements of any taxing authority or governmental authority or to
determine such compliance.
 
    These ownership limitations could delay, defer or prevent a change in
control of the Trust or other transaction that might involve a premium over the
then prevailing market price for the Common Shares or other attributes that the
shareholders may consider to be desirable.
 
    TRANSFER AGENT AND REGISTRAR.  The transfer agent and registrar for the
Common Shares is Norwest Bank Minnesota, N.A.
 
COMPARISON OF RIGHTS OF SHAREHOLDERS OF THE COMPANY AND SHAREHOLDERS OF THE
  TRUST
 
    The Company is organized as a corporation under the laws of the State of
Minnesota, and the Trust is organized as a real estate investment trust under
the laws of the State of Maryland. As a Minnesota corporation, the Company is
subject to the MBCA, a general corporation statute dealing with a wide variety
of matters, including election, tenure, duties and liabilities of directors and
officers; dividends and other distributions; meetings of stockholders; and
extraordinary actions, such as amendments to the certificate of incorporation,
mergers, sales of all or substantially all of the assets and dissolution. The
Company also is governed by its Amended and Restated Articles of Incorporation
(the "Minnesota Articles") and Bylaws (the "Minnesota Bylaws"), which have been
adopted pursuant to the MBCA. As a Maryland real estate investment trust, the
Trust is governed by the Maryland REIT Law, certain provisions of the Maryland
General Corporation Law (the "MGCL") and by the Declaration of Trust and the
Maryland Bylaws. Certain differences between the MBCA, the Maryland REIT Law,
the MGCL and among these various documents are summarized below.
 
    This summary of the comparative rights of the shareholders of the Company
and the shareholders of the Trust does not purport to be complete and is subject
to and qualified in its entirety by reference to the MBCA, the Maryland REIT Law
and the MGCL and also to the Minnesota Articles, the Minnesota Bylaws, the
Declaration of Trust and the Maryland Bylaws. The Declaration of Trust and the
Maryland Bylaws will be substantially in the forms attached as Appendix B and
Appendix C, respectively, to this Proxy Statement/Prospectus, and the Minnesota
Articles and the Minnesota Bylaws may be obtained from the Company, without
charge, by contacting Corporate Office Properties Trust, Inc., One Logan Square,
Suite 1105, Philadelphia, Pennsylvania 19103, attn: Denise J. Liszewski.
 
    STANDARD OF CONDUCT FOR DIRECTORS AND TRUSTEES.  The MBCA provides that a
director shall discharge the director's duties in good faith, in a manner the
director reasonably believes to be in the best interests of the corporation, and
with the care an ordinarily prudent person in a like position would have
exercised
 
                                       29
<PAGE>
under similar circumstances. A director who so performs those duties may not be
held liable by reason of being a director or having been a director of the
corporation.
 
    The Maryland REIT Law contains no similar provision concerning the standard
of conduct for trustees. However, Section 2-405.1 of the MGCL requires that a
director of a Maryland corporation perform his duties in good faith, with a
reasonable belief that the director's actions are in the best interests of the
corporation and with the care of an ordinarily prudent person in a like position
under similar circumstances. These provisions may be applicable to the Trustees.
 
    LIMITATION OF LIABILITY.  The MBCA provides that, if the articles of
incorporation so provide, the personal liability of a director to the
corporation or its shareholders for monetary damages for breach of fiduciary
duty as a director may be eliminated or limited, but that the articles may not
limit or eliminate such liability for (a) any breach of the director's duty of
loyalty to the corporation or its shareholders, (b) acts or omissions not in
good faith or that involve intentional misconduct or a knowing violation of law,
(c) the payment of unlawful dividends, stock repurchases or redemptions, (d) any
transaction in which the director received an improper personal benefit, (e)
certain violations of the Minnesota securities laws and (f) any act or omission
occurring prior to the date when the provision in the articles eliminating or
limiting liability becomes effective. The Minnesota Articles contain a provision
eliminating the personal liability of directors to the corporation or its
shareholders for monetary damages for breach of fiduciary duty as a director,
subject to the foregoing limitations.
 
    The Maryland REIT Law permits a Maryland real estate investment trust to
include in its declaration of trust a provision limiting the liability of its
trustees and officers to the trust and its shareholders for money damages except
for liability resulting from (i) actual receipt of an improper benefit or profit
in money, property or services or (ii) active and deliberate dishonesty
established by a final judgment as being material to the cause of action. The
Declaration of Trust contains such a provision limiting such liability to the
maximum extent permitted by Maryland law. Because the exceptions from the
limitation on liability are more extensive under the MBCA, trustees and officers
of the Trust may not be liable for money damages for certain actions for which
they would have otherwise been liable under the MBCA.
 
    There is no pending or, to the Company's knowledge, threatened litigation to
which any of its directors or officers is a party in which the rights of the
Company or its stockholders would be affected if the Company already were
subject to the provisions of Maryland law rather than Minnesota law.
 
    INDEMNIFICATION OF DIRECTORS AND OFFICERS.  The MBCA generally provides for
mandatory indemnification of persons acting in an official capacity on behalf of
the corporation if such a person acted in good faith, received no improper
personal benefit, acted in a manner the person reasonably believed to be in or
not opposed to the best interest of the corporation and, in the case of a
criminal proceeding, had no reasonable cause to believe that the conduct was
unlawful.
 
    The Minnesota Articles and Minnesota Bylaws provide for indemnification of
officers and directors and others acting in an official capacity on behalf of
the Company generally in a manner consistent with the MBCA; provided that the
person indemnified determined, in good faith, that the course of conduct which
caused the loss or liability was in or at least not opposed to the best
interests of the Company and, in the case of criminal proceedings, such person
had no reasonable cause to believe that the conduct was unlawful. Under the MBCA
and the Minnesota Bylaws, the Corporation may pay reasonable costs and advances
in advance of a final disposition of a proceeding upon receipt of an affirmation
from the indemnified person that he or she in good faith believed that the
criteria for indemnification had been met and an agreement to repay the advance
if it is finally determined that he or she is not entitled to indemnification
and the Board of Directors determines that known facts would not preclude
indemnification.
 
    The Declaration of Trust authorizes the Trust, to the maximum extent
permitted by Maryland law, to obligate itself to indemnify and to pay or
reimburse reasonable expenses in advance of final disposition of a
 
                                       30
<PAGE>
proceeding to (a) any present or former Trustee or officer or (b) any individual
who at the request of the Trust serves or has served another real estate
investment trust, corporation, partnership, joint venture, trust, employee
benefit plan or any other enterprise as a trustee, director, officer, partner,
employee or agent of such entity from and against any claim or liability to
which such person may become subject or which such person may incur by reason of
service in such capacity. The Maryland Bylaws obligate it, to the maximum extent
permitted by Maryland law, to indemnify and to pay or reimburse reasonable
expenses in advance of final disposition of a proceeding to (i) any present or
former Trustee or officer who is made a party to the proceeding by reason of his
service in that capacity or (ii) any such Trustee or officer who, at the request
of the Trust, serves or has served another real estate investment trust,
corporation, partnership, joint venture, trust, employee benefit plan or any
other enterprise as a trustee, director, officer, partner, employee or agent of
such entity and who is made a party to the proceeding by reason of his service
in that capacity against any claim or liability to which he may become subject
by reason of such status. The Declaration of Trust and the Maryland Bylaws also
permit the Trust to provide indemnification to any person who served a
predecessor of the Trust in any of the capacities described above and to any
employee or agent of the Trust or a predecessor of the Trust. The Maryland
Bylaws require the Trust to indemnify a trustee or officer who has been
successful, on the merits or otherwise, in the defense of any proceeding to
which he or she is made a party by reason of his or her service in that
capacity.
 
    The Maryland REIT Law permits a Maryland real estate investment trust to
indemnify, and to advance expenses to, its trustees and officers, to the same
extent as permitted by the MGCL for directors and officers of Maryland
corporations. The MGCL permits a corporation to indemnify its present and former
directors and officers, among others, against judgments, penalties, fines,
settlements and reasonable expenses actually incurred by them in connection with
any proceeding to which they may be made a party by reason of their service in
those or other capacities unless it is established that (i) the act or omission
of the director or officer was material to the matter giving rise to the
proceeding and (a) was committed in bad faith or (b) was the result of active
and deliberate dishonesty, (ii) the director or officer actually received an
improper personal benefit in money, property or services or (iii) in the case of
any criminal proceeding, the director or officer had reasonable cause to believe
that the act or omission was unlawful. However, a Maryland corporation may not
indemnify for an adverse judgment in a suit by or in the right of the
corporation or for a judgment of liability on the basis that personal benefit
was improperly received, unless in either case a court orders indemnification
and then only for expenses. In addition, the MGCL permits a corporation to
advance reasonable expenses to a director or officer upon the corporation's
receipt of (a) a written affirmation by the director or officer of his good
faith belief that he has met the standard of conduct necessary for
indemnification by the corporation and (b) a written undertaking by or on his or
her behalf to repay the amount paid or reimbursed by the corporation if it shall
ultimately be determined that the standard of conduct was not met. Under the
MGCL, rights to indemnification and expenses are nonexclusive, in that they need
not be limited to those expressly provided by statute.
 
    The MBCA, the Maryland REIT Law and the Bylaws of both the Company and the
Trust may permit indemnification for liabilities arising under the Securities
Act or the Exchange Act. The Board has been advised that, in the opinion of the
Commission, indemnification for liabilities arising under the Securities Act or
the Exchange Act is contrary to public policy and is therefore unenforceable,
absent a decision to the contrary by a court of appropriate jurisdiction.
 
    SHAREHOLDERS' MEETINGS.  The Minnesota Bylaws provide for an annual meeting
of shareholders upon reasonable notice and within a reasonable time, but not
less than 30 days, following delivery of the annual report. Minnesota law
provides that if a regular meeting of shareholders has not been held during the
immediately preceding 15 months, a shareholder or shareholders holding 3% or
more of the voting power of all shares entitled to vote may demand a regular
meeting of shareholders. The Minnesota Bylaws provide that the chief executive
officer, a majority of the Board or a majority of the Independent Directors or
shareholders holding an aggregate of not less than 10% of the voting shares of
the Company may call a special meeting. Minnesota law also provides that the
chief financial officer and two or more directors may
 
                                       31
<PAGE>
call a special meeting of the shareholders, except that a special meeting
concerning a business combination must be called by 25% of the voting power of
all shares entitled to vote.
 
    The Maryland REIT Law contains no provisions on shareholders meetings. The
Declaration of Trust and Maryland Bylaws provide for an annual meeting of
shareholders to be held upon reasonable notice and within a reasonable period,
but not less than 30 days, following delivery of the Trust's annual report, but
in any event within six months after the end of each full fiscal year. Special
meetings of shareholders may be called by a majority of the Trustees or by
certain executive officers of the Trust and shall be called upon the written
request of shareholders holding in the aggregate not less than a majority of the
outstanding shares of the Trust entitled to vote.
 
    ACTIONS BY WRITTEN CONSENT OF SHAREHOLDERS.  Under the MBCA, shareholders
may act by written consent in lieu of a shareholders' meeting. Under Minnesota
law, any action required or permitted to be taken at a shareholders' meeting may
be taken without a meeting by unanimous written consent signed by each of the
shareholders entitled to vote on such action. This power cannot be restricted by
a Minnesota corporation's articles. The Maryland REIT Law contains no similar
provision to the MBCA regarding written consent of shareholders. The Declaration
of Trust permits the Maryland Bylaws to include a provision that permits any
action which may be taken at a meeting of shareholders to be taken without a
meeting if a written consent of the action is signed by each shareholder
entitled to vote on the matter. The Maryland Bylaws permit any action which may
be taken at a meeting of shareholders to be taken without a meeting if a consent
in writing, setting forth such action, is signed by each shareholder entitled to
vote on the matter, and any other shareholder entitled to notice of a meeting of
shareholders has waived in writing any right to dissent from such action, and
such consent is filed with the minutes of proceedings of shareholders.
 
    INSPECTION OF BOOKS AND RECORDS.  Under Minnesota law, any shareholder of a
publicly held corporation has an absolute right, upon written demand, to examine
and copy, in person or by a legal representative, at any reasonable time, the
corporation's share register and other corporate records reasonably related to
the purpose described in the demand upon demonstrating that such stated purpose
is a proper purpose. The Maryland REIT law provides that shareholders have the
same rights to inspect the records of a real estate investment trust as
stockholders of a corporation have under the MGCL. Under the MGCL, persons who
together have been stockholders of a Maryland corporation for more than six
months and own at least five percent of the outstanding stock of any class of a
Maryland corporation may inspect and copy the corporation's books of account and
stock ledger, request a written statement of the corporation's affairs and
request a list of the corporation stockholders. In addition, any stockholder of
a Maryland corporation may (a) inspect and copy the bylaws, minutes of the
proceedings of stockholders and annual statements of affairs and (b) request the
corporation to provide a sworn statement showing all stock, as well as any other
securities, issued and all consideration received by the corporation during the
preceding twelve months.
 
    INVESTMENT AND FINANCING POLICIES.  The Minnesota Bylaws contain investment
policies and restrictions which limit certain of the activities of the Company.
In addition, the Minnesota Bylaws contain a restriction on indebtedness which
limits the ability of the Company to incur indebtedness if, as a result, the
consolidated indebtedness of the Company would exceed 300% of the Company's net
assets, as defined in the Minnesota Bylaws. These policies may not be changed
without the approval of a majority of the Independent Directors. The Maryland
Bylaws do not contain the same investment policies and restrictions nor the same
indebtedness restriction. Instead, the Board of Trustees has adopted certain
investment and financing policies. See "Policies with Respect to Certain
Activities." The Board of Trustees may, without shareholder approval, amend or
modify its current policies at any time.
 
    CLASSIFIED BOARD.  The MBCA permits a corporation's bylaws to provide for a
classified board of directors and does not limit the number of classes. The
Minnesota Bylaws do not provide for a classified board of directors. The
Minnesota Bylaws currently provide for seven directors, all of whom are elected
at
 
                                       32
<PAGE>
the annual meeting of stockholders and hold office until the next annual meeting
of stockholders or until their successors are elected and qualified.
 
    The Declaration of Trust provides for a staggered Board of Trustees. The
Maryland Bylaws provide that a majority of Trustees may establish, increase or
decrease the number of Trustees. Upon the consummation of the Reformation, there
will be seven Trustees. The Trustees are divided into three classes, with terms
of three years each and with one class to be elected at each annual meeting of
shareholders. See "Management" below for the identity of the Class I, Class II
and Class III Trustees and for their respective initial terms of office, which
will range from one to three years. At each annual meeting of shareholders of
the Trust, commencing in 1999, successors of the class of Trustees whose term
expires at that annual meeting will be elected for a three-year term.
 
    The Board believes that a classified board will be advantageous to the Trust
and its shareholders because three-year terms will enhance the likelihood of
continuity and stability in the composition of the Trust's Board of Trustees and
in the policies formulated by its Board of Trustees. The Board believes that
this, in turn, will permit the Board of Trustees more effectively to represent
the interests of all shareholders. However, the classified Board of Trustees
could have the effect of making the removal of incumbent Trustees time-consuming
and difficult, which could discourage a third party from making a tender offer
or otherwise attempting to effect a change in control of the Trust or other
transaction that might be beneficial to a majority of shareholders or to the
Trust.
 
    With a classified Board of Trustees, it will generally take holders of a
majority of the voting power two annual meetings of stockholders to elect a
majority of the Board of Trustees. As a result, a classified board may delay,
defer or prevent a tender offer or change in control of the Trust, even though a
tender offer or change in control might involve a premium over the then
prevailing market price for the Common Shares or other attributes that the
shareholders may consider to be desirable. In addition, because under the
Declaration of Trust a trustee may be removed, only for cause (as defined in the
Declaration of Trust) by the affirmative vote of the holders of two thirds of
the outstanding shares entitled to vote in the election of trustees, the
classified Board of Trustees would delay shareholders who do not agree with the
policies of the Board of Trustees from replacing a majority of the Board of
Trustees for two years, unless they can demonstrate that the trustee should be
removed for cause and obtain the requisite vote. Under Minnesota law, in
general, unless a corporation's articles provide otherwise (which the Minnesota
Articles do not), a director may be removed with or without cause by the
affirmative vote of a majority of the shareholders. See "--Removal of Directors
and Trustees."
 
    VACANCIES ON THE BOARDS OF DIRECTORS AND TRUSTEES.  Under the MBCA, unless
the articles or bylaws provide otherwise, (a) a vacancy on a corporation's board
of directors may be filled by the vote of a majority of directors then in
office, although less than a quorum, (b) a newly created directorship resulting
from an increase in the number of directors may be filled by the board of
directors and (c) any director so elected shall hold office only until a
qualified successor is elected at the next regular or special meeting of
shareholders. The Minnesota Bylaws follow these provisions. The Maryland Bylaws
also permit the trustees of the Trust to fill vacancies in the Board of
Trustees. The Maryland Bylaws provide that any vacancy on the Board of Trustees
for any cause shall be filled by a majority of the remaining trustees, even if
such majority is less than a quorum.
 
    REMOVAL OF DIRECTORS AND TRUSTEES.  Under the MBCA and the Minnesota Bylaws,
a director may be removed with or without cause by the affirmative vote of a
majority of the shareholders. The Minnesota Bylaws do not limit the
shareholders' ability to remove a director without cause. The Declaration of
Trust provides that a Trustee may be removed only for cause upon the affirmative
vote of at least two-thirds, rather than a simple majority, of the votes
entitled to be cast in the election of Trustees, but only by a vote taken at a
shareholder meeting. This provision, when coupled with the provision in the
Maryland Bylaws authorizing the Board of Trustees to fill vacant trusteeships,
precludes shareholders from removing incumbent trustees, except upon the
existence of cause for removal and a substantial affirmative vote, and filling
the vacancies created by such removal with their own nominees.
 
                                       33
<PAGE>
    AUTHORIZED SHARES OF CAPITAL STOCK.  As of February 11, 1998, there were
50,000,000 shares of stock authorized, of which 2,268,583 shares of Common Stock
were issued and outstanding, and there were no shares of preferred stock
authorized. The Minnesota Articles provide that preemptive rights shall not
exist with respect to shares of stock of the Company. Upon approval of the
Reformation, the Board of Trustees of the Trust will be authorized to issue up
to 50,000,000 shares of beneficial interest from time to time in such
combination as the Trustees shall determine. As permitted by Maryland REIT Law,
the Declaration of Trust contains a provision permitting the Board of Trustees,
without any action by the shareholders of the Trust, to amend the Declaration of
Trust to increase or decrease the aggregate number of shares of beneficial
interest or the number of shares of any class of shares of beneficial interest
that the Trust has the authority to issue. Unless specifically provided by the
Board of Trustees, holders of shares will have no preemptive rights to purchase
or subscribe for any additional shares of beneficial interest or any other
security of the Trust which it may sell.
 
    The Board of Trustees believes that the power to issue additional shares of
beneficial interest will provide the Trust with increased flexibility in
structuring possible future financings and acquisitions and in meeting other
needs that might arise. The additional shares of beneficial interest, including
possible Common Shares, will be available for issuance without further action by
the Trust's shareholders, unless action by the shareholders is required by
applicable law or the rules of any stock exchange or automated quotation system
on which the Trust's securities may be listed or traded. Although the Board of
Trustees currently has no intention of doing so, it could authorize the Trust to
issue a class or series that could, depending on the terms of such class or
series, delay, defer or prevent a change in control of the Trust or other
transaction that might involve a premium over the then prevailing market price
for the Common Shares or other attributes that the shareholders may consider to
be desirable.
 
    DIVIDENDS AND OTHER DISTRIBUTIONS.  Generally, a Minnesota corporation may
pay a dividend if its board of directors determines that the corporation will be
able to pay its debts in the ordinary course of business after paying the
dividend and if, among other things, the dividend payment does not reduce the
remaining net assets of the corporation below the aggregate preferential amount
payable in the event of liquidation to the holders of the shares having
preferential rights, unless the payment is made to those shareholders in the
order and to the extent of their respective priorities. The Maryland REIT Law
contains no similar provision on dividends and other distributions. Under the
Declaration of Trust, the Board of Trustees may from time to time authorize and
declare such dividends or distribution in cash or other assets of the Trust or
in securities of the Trust or from any other source as the Board of Trustees in
its discretion may determine. The Declaration of Trust provides that the Board
of Trustees shall endeavor to authorize, declare and cause the Trust to pay such
dividends and distributions as shall be necessary for the Trust to qualify as a
real estate investment trust under the Code; however, shareholders shall have no
right to any dividend or other distribution unless and until authorized and
declared by the Board of Trustees. The Company has historically paid quarterly
cash distributions and the Trust plans to continue to do so. Because of the
provisions of the Code applicable to REITs, the Company does not believe that
the differences between Minnesota and Maryland law regarding dividends or
distributions will result in any material differences between the past practice
of the Company and the anticipated future practice of the Trust in the payment
of dividends or distributions. See "Federal Income Tax Considerations--Taxation
of the Trust--Annual Distribution Requirements."
 
    CERTAIN BUSINESS COMBINATIONS.  MBCA Section 302A.673 provides that an
issuing public corporation may not engage in certain business combinations with
any person that acquires beneficial ownership of ten percent or more of the
voting stock of that corporation (i.e., an "interested shareholder") for a
period of four years following the date that that person became an interested
shareholder (the "share acquisition date") unless, prior to the share
acquisition date, a committee of the corporation's disinterested directors
approve either the business combination or the acquisition of shares.
 
    Only defined types of "business combinations" are prohibited by the
Minnesota statute. In general, the definition includes: any merger or exchange
of securities of the corporation with the interested
 
                                       34
<PAGE>
shareholder; certain sales, transfers or other dispositions of assets of the
corporation to an interested shareholder; transfers by the corporation to
interested shareholders of shares that have market value of five percent or more
of the value of all outstanding shares, except for a pro rata transfer made to
all shareholders; any liquidation or dissolution of, or reformation in another
jurisdiction of, the corporation which is proposed by the interested
shareholder; certain transactions proposed by the interested shareholder or any
affiliate or associate of the interested shareholder that would result in an
increase in the proportion of shares entitled to vote owned by the interested
shareholder; and transactions whereby the interested shareholder receives the
benefit of loans, advances, guarantees, pledges or other financial assistance or
tax advances or credits from the corporation.
 
    For purposes of selecting a committee of "disinterested" directors a
director or person is "disinterested" under the MBCA if the director or person
is neither an officer nor an employee, nor has been an officer or employee
within five years preceding the formation of the committee, of the issuing
public corporation or of a related corporation. The committee must consider and
act on any written, good faith proposal to acquire shares or engage in a
business combination. The committee must consider and take action on the
proposal and within 30 days render a decision in writing regarding the proposal.
 
    Under the MGCL, as applicable to Maryland real estate investment trusts,
certain "business combinations" (including a merger, consolidation, share
exchange or, in certain circumstances, an asset transfer or issuance or
reclassification of equity securities) between a Maryland real estate investment
trust and any person who beneficially owns ten percent or more of the voting
power of the trust's shares or an affiliate of the trust who, at any time within
the two-year period prior to the date in question, was the beneficial owner of
ten percent or more of the voting power of the then outstanding voting stock of
such trust (an "Interested Shareholder"), or an affiliate of such an Interested
Shareholder, are prohibited for five years after the most recent date on which
the Interested Shareholder becomes an Interested Shareholder. Thereafter, any
such business combination must be recommended by the board of trustees of such
trust and approved by the affirmative vote of at least (i) 80% of the votes
entitled to be cast by holders of outstanding voting shares of beneficial
interest of the trust and (ii) two-thirds of the votes entitled to be cast by
holders of voting shares of the trust other than shares held by the Interested
Shareholder with whom (or with whose affiliate) the business combination is to
be effected, unless, among other conditions, the trust's common shareholders
receive a minimum price (as defined in the MGCL) for their shares and the
consideration is received in cash or in the same form as previously paid by the
Interested Shareholder for its shares. These provisions of Maryland law do not
apply, however, to business combinations that are approved or exempted by the
board of trustees of the trust prior to the time that the Interested Shareholder
becomes an Interested Shareholder. The Board of Trustees has approved the
acquisition of additional Common Shares by Messrs. Shidler and Hamlin upon
redemption of their Units received in the Transactions.
 
    Both the Minnesota and Maryland provisions permit a corporation or a trust
to "opt out" of the business combination statute by electing to do so in its
articles or declaration of trust or, in the case of Minnesota law, the bylaws
or, in the case of Maryland law, by resolution of the Board of Trustees. Neither
the Minnesota Articles nor the Minnesota Bylaws contain such an "opt-out"
provision. The Board of Trustees has opted out of this statute by resolution.
 
    CONTROL SHARE ACQUISITIONS.  The Minnesota control share acquisition
statute, MBCA Section 302A.671 ("Section 671"), establishes various disclosure
and shareholder approval requirements to be met by individuals or companies
attempting a takeover of an "issuing public corporation." Section 671 provides
that any person (an "acquiring person") proposing to make a "control share
acquisition" must disclose certain information to the target corporation and the
target corporation's shareholders must thereafter approve the control share
acquisition, or else certain of the shares acquired in the control share
acquisition will not have voting rights and will be subject to redemption by the
target corporation for a specified period of time at the market value of such
shares. A "control share acquisition" is an acquisition of shares of an issuing
public corporation which results in the acquiring person's voting power
increasing from its
 
                                       35
<PAGE>
preacquisition level to one of the following levels of voting power: (i) at
least 20% but less than 33 1/3%, (ii) at least 33 1/3% but less than or equal to
50% and (iii) over 50%. The definition of a "control share acquisition"
specifically excludes acquisitions of shares from the corporation issuing such
shares, and acquisitions pursuant to plans of merger or exchange which are
approved by the shareholders of the corporation.
 
    The information that must be disclosed by the acquiring person includes,
among other things, the terms of the proposed control share acquisition, the
source of funds, any plans to liquidate the corporation and any plans to move
the location of its principal executive offices or business activities. If an
acquiring person meets certain requirements set forth in Section 671, the target
corporation must call a meeting of its shareholders for the purpose of
considering the proposed control share acquisition if the acquiring person so
requests in writing. The notice of the shareholders' meeting must be accompanied
by the information statement and a statement of the position of the board of
directors on the proposed control share acquisition. Unless the disclosure
provisions and the shareholder approval provisions of Section 671 are met,
including affirmative votes by holders of a majority of shares (excluding all
interested shares), shares acquired in a control share acquisition that exceed
the initial threshold of any of the new ranges of voting power described above
(i.e., 20%, 33 1/3% or 50%) are denied voting rights and are subject to
redemption by the target corporation. Any such shares denied voting rights
regain those voting rights only upon transfer to a person other than the
acquiring person or any affiliate or associate of the acquiring person. Such
shares are subject to a call for redemption by the target corporation at a price
equal to the market value of such shares. The call for redemption must be given
by the target corporation within 30 days after the event giving rise to the
option to call the shares for redemption and must be redeemed within 60 days
after the call is given.
 
    The MGCL, as applicable to Maryland real estate investment trusts, provides
that "Control Shares" (as defined below) of a Maryland real estate investment
trust acquired in a "control share acquisition" (as defined below) have no
voting rights except to the extent approved by a vote of two-thirds of the votes
entitled to be cast on the matter, excluding shares of beneficial interest owned
by the acquiror, by officers or by trustees who are employees of the trust.
"Control Shares" are voting shares of beneficial interest which, if aggregated
with all other such shares of beneficial interest previously acquired by the
acquiror or in respect of which the acquiror is able to exercise or direct the
exercise of voting power (except solely by virtue of a revocable proxy), would
entitle the acquiror to exercise voting power in electing trustees within one of
the following ranges of voting power: (i) one-fifth or more but less than
one-third, (ii) one-third or more but less than a majority or (iii) a majority
or more of all voting power. Control Shares do not include shares the acquiring
person is then entitled to vote as a result of having previously obtained
shareholder approval. A "control share acquisition" means the acquisition of
Control Shares, subject to certain exceptions.
 
    Under the MGCL, a person who has made or proposes to make a control share
acquisition, upon satisfaction of certain conditions (including an undertaking
to pay expenses), may compel the board of trustees of the trust to call a
special meeting of shareholders to be held within 50 days of demand to consider
the voting rights of the shares. If no request for a meeting is made, the trust
may itself present the question at any shareholders meeting.
 
    If voting rights are not approved at the meeting or if the acquiring person
does not deliver an acquiring person statement as required by the statute, then,
subject to certain conditions and limitations, the trust may redeem any or all
of the Control Shares (except those for which voting rights have previously been
approved) for fair value, determined without regard to the absence of voting
rights for the Control Shares, as of the date of the last control share
acquisition by the acquiror or of any meeting of shareholders at which the
voting rights of such shares are considered and not approved. If voting rights
for Control Shares are approved at a shareholders meeting and the acquiror
becomes entitled to vote a majority of the shares entitled to vote, all other
shareholders may exercise appraisal rights. The fair value of the shares as
 
                                       36
<PAGE>
determined for purposes of such appraisal rights may not be less than the
highest price per share paid by the acquiror in the control share acquisition.
 
    The control share acquisition statute does not apply (a) to shares acquired
in a merger, consolidation or share exchange if the trust is a party to the
transaction or (b) to acquisitions approved or exempted by the declaration of
trust or bylaws of the trust.
 
    Both Minnesota and Maryland law permit a corporation to "opt out" of the
control share acquisition statute in the articles or bylaws. The Minnesota
Articles and Minnesota Bylaws do not contain an "opt-out" provision. However,
the Maryland Bylaws contain a provision exempting from the control share
acquisition statute any and all acquisitions by any person of the Trust's shares
of beneficial interest. The Board of Trustees may, however, amend the Maryland
Bylaws at any time to eliminate such provision, either prospectively or
retroactively.
 
    OTHER ANTI-TAKEOVER PROVISIONS.  The MBCA includes four other provisions
relating to takeovers that are not included in the Maryland REIT Law or the
MGCL. These provisions address a corporation's use of golden parachutes,
greenmail, the standard of conduct of the board of directors in connection with
the consideration of takeover proposals and the acquisition of shares following
a tender offer.
 
    The MBCA contains a provision which prohibits a publicly held corporation
from entering into or amending agreements (commonly referred to as "golden
parachutes") that increase current or future compensation of any officer or
director during any tender offer or request or invitation for tenders.
 
    The MBCA also contains a provision which limits the ability of a corporation
to repurchase shares at a price above market value (commonly referred to as
"greenmail"). The statute provides that a publicly held corporation is
prohibited from purchasing or agreeing to purchase any shares from a person who
beneficially owns more than five percent of the voting power of the corporation
if the shares had been beneficially owned by that person for less than two
years, and if the purchase price would exceed the market value of those shares.
However, such a purchase will not violate the statute if the purchase is
approved at a meeting of the shareholders by a majority of the voting power of
all shares entitled to vote or if the corporation's offer is of at least equal
value per share and to all holders of shares of the class or series and to all
holders of any class or series into which the securities may be converted.
 
    The MBCA authorizes the board of directors, in considering the best
interests of the corporation with respect to a proposed acquisition of an
interest in the corporation, to consider the interest of the corporation's
employees, customers, suppliers and creditors, the economy of the state and
nation, community and social considerations and the long-term as well as
short-term interests of the corporation and its shareholders, including the
possibility that these interests may be best served by the continued
independence of the corporation.
 
    The MBCA prohibits a tender offeror (as defined) from acquiring additional
shares within two years following a tender offer unless the price and terms are
substantially equivalent to those provided in the tender offer.
 
    DISSOLUTION OF THE COMPANY AND THE TRUST.  The MBCA provides that a
corporation may be dissolved by the voluntary action of holders of a majority of
a corporation's shares entitled to vote at a meeting called for the purpose of
considering such dissolution.
 
    The Declaration of Trust permits (i) the termination of the Trust and the
discontinuation of the operations of the Trust by the affirmative vote of the
holders of not less than two-thirds of the outstanding Common Shares entitled to
be cast on the matter at a meeting of shareholders or by written consent and
(ii) the termination of the Trust's qualification as a REIT if such
qualification, in the opinion of the Board of Trustees, is no longer
advantageous to the shareholders.
 
                                       37
<PAGE>
    JUDICIAL DISSOLUTION.  Under the MBCA, if a deadlock of the directors
precludes corporate action, or if a division of the shareholders makes election
of directors impossible, stockholders are permitted to seek judicial action. The
MBCA provides that a court may dissolve a publicly owned corporation in an
action by a shareholder where: (a) the situation involves a deadlock in the
management of corporate affairs and the shareholders cannot break the deadlock;
(b) the directors have acted fraudulently, illegally, or in a manner unfairly
prejudicial to the corporation; (c) the shareholders are divided in voting power
for two consecutive regular meetings to the point where successor directors are
not elected; (d) there is a case of misapplication or waste of corporate assets;
or (e) the duration of the corporation has expired. The Maryland REIT Law
contains no similar provisions.
 
    AMENDMENTS TO THE MINNESOTA ARTICLES AND THE DECLARATION OF TRUST.  Under
the MBCA, before the shareholders may vote on an amendment to the articles of
incorporation, either a resolution to amend the articles must have been approved
by the affirmative vote of the majority of the directors present at the meeting
where such resolution was considered, or the amendment must have been proposed
by shareholders holding three percent or more of the voting power of the shares
entitled to vote. Amending the articles of incorporation requires the
affirmative vote of the holders of the majority of the voting power present and
entitled to vote at the meeting (and of each class, if entitled to vote as a
class), unless the articles of incorporation require a larger proportion. The
MBCA provides that a proposed amendment may be voted upon by the holders of a
class or series even if the articles of incorporation would deny that right, if
among other things, the proposed amendment would increase or decrease the
aggregate number of authorized shares of the class or series, change the rights
or preferences of the class or series, create a new class or series of shares
having rights and preferences prior and superior to the shares of that class or
series or limit or deny any existing preemptive right of the shares of the class
or series. The Minnesota Articles require a majority vote for amendments other
than in the case of a change in the terms or contract rights of any of its
outstanding capital stock which requires the affirmative vote of not less than
two-thirds of the aggregate number of votes entitled to be cast.
 
    Under the Maryland REIT Law, a real estate investment trust generally cannot
amend its declaration of trust or merge unless approved by the affirmative vote
of shareholders holding at least two-thirds of the shares entitled to vote on
the matter unless a lesser percentage (but not less than a majority of all of
the votes entitled to be cast on the matter) is set forth in the real estate
investment trust's declaration of trust. The Trust's Declaration of Trust
provides for a majority vote with respect to amendments. Under the Maryland REIT
Law, a declaration of trust may permit the trustees by a two-thirds vote to
amend the declaration of trust from time to time to qualify as a real estate
investment trust under the Code or the Maryland REIT Law without the affirmative
vote or written consent of the shareholders. The Trust's Declaration of Trust
permits such action by the Board of Trustees.
 
    AMENDMENTS TO THE BYLAWS.  The MBCA provides that, unless reserved by the
articles to the shareholders, the power to adopt, amend or repeal a
corporation's bylaws is vested in the board of directors, subject to the power
of the shareholders to adopt, repeal or amend the bylaws. After adoption of
initial bylaws, the board of a Minnesota corporation cannot adopt, amend or
repeal a bylaw fixing a quorum for meetings of shareholders, prescribing
procedures for removing directors or filling vacancies in the board, or fixing
the number of directors or their classifications, qualifications or terms of
office, but may adopt or amend a bylaw to increase the number of directors. The
Minnesota Bylaws reserve to a majority of the shareholders the right to amend
the Minnesota Bylaws. Under the Maryland Bylaws, the Trustees have the exclusive
power to amend the Maryland Bylaws.
 
    DENIAL OF VOTING RIGHTS.  The MBCA provides that holders of the outstanding
shares of a class of stock shall be entitled to vote as a class upon a proposed
amendment to the certificate of incorporation, whether or not entitled to vote
thereon by the certificate of incorporation, if the amendment would change the
aggregate number of authorized shares or the par value of the class or would
adversely affect the powers, preferences or special rights of the class. There
is no similar provision in the Maryland REIT Law.
 
                                       38
<PAGE>
    ADVANCE NOTICE OF NOMINATIONS AND NEW BUSINESS.  The Maryland Bylaws provide
that (i) with respect to an annual meeting of shareholders, nominations of
persons for election to the Board of Trustees and the proposal of business to be
considered by shareholders may be made only (a) pursuant to the Trust's notice
of the meeting, (b) by the Board of Trustees or (c) by a shareholder who is
entitled to vote at the meeting and has complied with the advance notice
procedures set forth in the Maryland Bylaws and (ii) with respect to special
meetings of shareholders, only the business specified in the Trust's notice of
meeting may be brought before the meeting of shareholders. Nominations of
persons for election to the Board of Trustees may be made only (a) pursuant to
the Trust's notice of the meeting, (b) by the Board of Trustees or (c) provided
that the Board of Trustees has determined that Trustees shall be elected at such
meeting, by a shareholder who is entitled to vote at the meeting and has
complied with the advance notice provisions set forth in the Maryland Bylaws.
 
    The Minnesota Bylaws provide that with respect to both annual and special
meetings, the notice of the meeting shall state that no business other than that
provided in the notice may be conducted at the meeting.
 
    RESTRICTIONS ON OWNERSHIP AND TRANSFER OF COMMON STOCK AND COMMON
SHARES.  Under the Minnesota Articles, any transfer of shares that would result
in the disqualification of the Company as a REIT under the Code is void AB
INITIO to the fullest extent permitted by law, and the intended transferee of
such shares is deemed never to have had an interest therein. The Minnesota
Articles specifically prohibit any person or group of persons from holding,
directly or indirectly, ownership of a number of shares in excess of 9.8% of the
outstanding capital stock. Shares owned by a person or group of persons in
excess of such amounts are referred to in the Minnesota Articles as "excess
shares." For this purpose, shares are deemed to be owned by a person if they are
constructively owned by such person under the provisions of Section 544 of the
Code (as modified by Section 856(h) of the Code) or are beneficially owned by
such person under the provisions of Rule 13d-3 promulgated under the Exchange
Act, and the term "group" has the same meaning as that term has for purposes of
Section 13(d)(3) of the Exchange Act. The above provisions in the Minnesota
Articles are very similar to the ownership limit provisions set forth in the
Declaration of Trust except that the Declaration of Trust specifically provides
that, if any purported transfer of Common Shares would cause the Trust to be
beneficially owned by fewer than 100 persons, such transfer will be null and
void in its entirety and the intended transferee will acquire no rights to the
stock. See "--Description of Shares of Beneficial Interest--Restrictions on
Transfer."
 
    The remedy provided in the Minnesota Articles arising from a violation of
the ownership limits described in the preceding paragraph is different from the
remedy provided in the Declaration of Trust arising from a violation of the
comparable provisions in the Declaration of Trust. Pursuant to the Minnesota
Articles, the Board is authorized to refuse to transfer any shares to a person
if, as a result of the transfer, that person would own excess shares. The
Minnesota Articles also provide that in the event any person acquires excess
shares, at the discretion of the Board such excess shares may be redeemed by the
Company. The redemption price for such excess shares is the closing price as
reported on the NASDAQ System on the last business day prior to the redemption
date or, if the shares are listed on an exchange, the closing price on the last
business day prior to the redemption date or, if neither listed on an exchange
nor quoted on the NASDAQ System, the net asset value of the shares as determined
in good faith by the Board, but in each case never greater than the net asset
value of the shares as determined in good faith by the Board. The remedies
available to the Trust in the Declaration of Trust include a constructive Trust
for the shares in excess of the Ownership Limit, and the right to designate an
alternative purchaser at a fixed price in addition to the right to repurchase
the shares. The Share Trustee will vote all shares and receive all distributions
prior to disposition of the excess shares. For a more complete description of
the remedies available to the Trust under the Declaration of Trust see
"--Description of Shares of Beneficial Interest-- Restrictions on Transfer."
 
    All certificates evidencing the Common Shares will bear a legend referring
to the restrictions set forth in the Declaration of Trust.
 
                                       39
<PAGE>
    Under both the Minnesota Articles and the Declaration of Trust, each
shareholder may be required to disclose to the Company or the Trust in writing
such information as the Company or the Trust may request in order to determine
the effect, if any, of such shareholder's actual and constructive ownership of
Common Stock or Common Shares on the status as a REIT and to ensure compliance
with the ownership limits described above. In addition, under the Declaration of
Trust, every owner of a specified percentage (or more) of the outstanding shares
of Common Shares must file a completed questionnaire containing information
regarding their ownership of such shares, as set forth in the Treasury
Regulations. Under current Treasury Regulations, the percentage will be set
between 0.5% and 5.0% depending upon the number of record holders of the shares.
 
    The foregoing ownership limitations may have the effect of delaying,
deferring or preventing a change of control of the Trust without the consent of
the Board of Trustees.
 
    ANNUAL REPORT.  Both the Minnesota Bylaws and the Declaration of Trust
(pursuant to the Maryland REIT Law) require the Company and the Trust to deliver
to shareholders an annual report concerning its operations for the preceding
fiscal year containing financial statements prepared in accordance with GAAP
which are audited and reported on by independent certified public accountants.
The report must include a balance sheet, an income statement and a surplus
statement. Annual reports must be mailed or delivered to each shareholder and
must be placed on file at the principal office of the Trust within the time
prescribed by the Maryland REIT Law.
 
    MARYLAND ASSET REQUIREMENTS.  To maintain its qualification as a Maryland
real estate investment trust, the Maryland REIT Law requires at least 75% of the
value of the Trust's assets to be held, directly or indirectly, in real estate
assets, mortgages or mortgage related securities, government securities, cash
and cash equivalent items, including high-grade short term securities and
receivables. The Maryland REIT Law also prohibits the Trust from using or
applying land for farming, agricultural, horticultural or similar purposes.
 
    The MBCA does not have an equivalent provision.
 
                                  THE COMPANY
 
GENERAL
 
    The Company is a self-administered REIT, headquartered in Philadelphia,
Pennsylvania, which focuses principally on the ownership, acquisition and
management of suburban office properties in high growth submarkets in the United
States. The Company currently owns interests in ten suburban office buildings in
Pennsylvania and New Jersey containing approximately 1.5 million rentable square
feet and seven retail properties located in the Midwest containing approximately
370,000 rentable square feet. As of December 31, 1997, the Company's properties
were over 99% leased.
 
    The Company was formed in 1988 to own and acquire retail properties and
subsequently became an externally advised REIT. On October 14, 1997, the
Company, as part of the Transactions, acquired the Mid-Atlantic suburban office
operations of The Shidler Group, a national real estate firm. As a result of the
Transactions, the Company relocated its headquarters from Minneapolis to
Philadelphia and became internally administered. Further, Jay Shidler became the
Company's Chairman of the Board and Clay Hamlin became the Company's President
and Chief Executive Officer. On January 1, 1998 the Company changed its name to
Corporate Office Properties Trust, Inc.
 
BUSINESS OBJECTIVES AND GROWTH STRATEGIES
 
    The Company's primary business objectives are to achieve sustainable
long-term growth in FFO per share and to maximize long-term shareholder value.
The Company intends to achieve these objectives primarily through external
growth and, to a lesser extent, through internal growth. The Company intends to
focus its activities on acquiring, owning and operating suburban office
properties in high growth
 
                                       40
<PAGE>
submarkets throughout the United States. The Company does not intend to expand
its existing investments in retail properties and, to the extent appropriate
opportunities arise, it may contribute some or all of these properties to the
Operating Partnership in exchange for additional Units or sell or exchange some
or all of these properties and reinvest any net cash proceeds thereof in
suburban office properties.
 
    - SUBURBAN OFFICE FOCUS. Management believes office buildings currently
      offer the strongest fundamentals of any real estate property type, and
      suburban office properties offer the Company the most attractive
      investment opportunities. The three key factors driving the strong
      fundamentals of suburban office properties are (i) declining vacancy
      rates, (ii) positive net absorption and (iii) limited new supply of office
      product. Management believes that many companies are relocating to, and
      expanding in, suburban locations because of the lower occupancy costs,
      proximity to residential housing and better quality of life than
      traditional central business districts.
 
    - EXTERNAL GROWTH. The Company is actively pursuing the acquisition of
      additional suburban office properties in United States submarkets with
      strong fundamentals. The Company's three-part acquisition strategy
      includes (i) entity transactions in which the Company enters new markets
      by acquiring significant portfolios along with their management, (ii)
      portfolio property purchases and (iii) opportunistic acquisitions of
      individual properties in submarkets in which the Company has a presence.
      The Company believes that there are a significant number of potential
      acquisitions that could greatly benefit from management's experience in
      enhancing property cash flow and value by renovating and repositioning
      properties.
 
    - INTERNAL GROWTH. Management believes that the Company's internal growth
      will come from (i) proactive property management and leasing, (ii)
      contractual rent increases, (iii) operating efficiencies achieved through
      increasing economies of scale and (iv) tenant retention and rollovers at
      increased rents where market conditions permit.
 
    The Company believes it has certain competitive advantages which will
enhance its ability to identify and capitalize on acquisition opportunities,
including: (i) management's national multiple market expertise in identifying,
creatively structuring and closing acquisitions; (ii) management's experience in
successfully growing public real estate companies utilizing a
centralized/decentralized organizational structure; (iii) management's
long-standing relationships with tenants, real estate brokers, and institutional
and other owners of commercial real estate, which help the Company to identify
acquisition opportunities resulting in a large acquisition pipeline; (iv) the
Company's fully integrated real estate operations, which allow it to respond
quickly to acquisition opportunities; (v) the Company's access to capital as a
public company; and (vi) the Company's ability to offer tax deferred exchanges
to sellers of properties.
 
CAPITALIZATION STRATEGY
 
    In conjunction with its growth strategies, the Company has developed a
two-phase capital strategy. The Company intends that the first phase will be a
rapid growth period, during which the Company plans to emphasize the issuance of
Units to facilitate entity and portfolio acquisitions. To accelerate growth in
FFO per share during this period, the Company will utilize a cash flow to debt
service coverage ratio of approximately 1.6 to 1 which is anticipated to equate
to a debt to total market capitalization of between 40% and 60%. During the
second phase, the Company's mature growth period, it plans to gradually reduce
its debt as a percentage of total market capitalization while continuing to grow
FFO per share.
 
    The Company is presently considering issuing in the near term for cash,
either in a private placement or through a public offering, a significant amount
of Common Shares. In addition, the Company is likely to issue directly, or
through the issuance of Units by the Operating Partnership, a substantial number
of Common Shares, or Units redeemable or exchangeable for Common Shares, in
connection with acquisitions. The Company is presently exploring a number of
potential acquisitions, some of which could be material and a number of which
could be effected in the near term in the event the Company's explorations are
successful.
 
                                       41
<PAGE>
                                   PROPERTIES
 
THE SUBURBAN OFFICE PROPERTIES
 
    Set forth below is certain information with respect to the Company's office
properties.
<TABLE>
<CAPTION>
                                                       PERCENTAGE                   PERCENTAGE     TOTAL RENTAL
                               YEAR       RENTABLE       LEASED         TOTAL           OF            REVENUE
                              BUILT/       SQUARE        (AS OF        RENTAL      TOTAL RENTAL     PER SQUARE
PROPERTY LOCATION           RENOVATED       FEET         2/1/98)     REVENUE(1)     REVENUE(1)        FOOT(1)
- -------------------------  ------------  -----------  -------------  -----------  ---------------  -------------
<S>                        <C>           <C>          <C>            <C>          <C>              <C>
PHILADELPHIA REGION
  Unisys World Hdqtrs.
    751 Jolly Rd.           1966/1991       112,958         100.0%    $1,425,955           8.2%      $   12.62
    753 Jolly Rd.          1960/1992-94     424,380         100.0     2,903,216           16.6            6.84
                                         -----------                 -----------         -----
      Combined Total                        537,338                   4,329,171           24.8            8.06
    760 Jolly Rd.           1974/1994       199,380         100.0     2,516,925           14.4           12.62
  Merck Building
    785 Jolly Rd.           1970/1996       218,219         100.0     2,096,951           12.0            9.61
 
HARRISBURG REGION
  Gateway Corporate Ctr.
    6385 Flank Dr.             1995          32,800         100.0       431,616            2.5           13.16
  Commerce Court
    2601 Market Pl.            1989          67,377          98.3     1,071,348            6.1           16.19
    2605 Interstate Dr.        1990          84,268         100.0     1,159,160            6.6           13.76
 
PRINCETON REGION
  Teleport National
    Hdqtrs.
    429 Ridge Rd.           1966/1996       142,385         100.0     2,508,824           14.4           17.62
    437 Ridge Rd.           1962/1996        30,000         100.0       582,867            3.3           19.43
  IBM Building
    431 Ridge Rd.           1958/1967       170,000         100.0     2,767,414           15.9           16.28
                                         -----------                 -----------         -----
    TOTAL/WEIGHTED
      AVERAGE                             1,481,767          99.8%   1$7,464,276         100.0%      $   11.80
                                         -----------                 -----------         -----
                                         -----------                 -----------         -----
 
<CAPTION>
                                 MAJOR TENANTS
                           (10% OR MORE OF RENTABLE
PROPERTY LOCATION                SQUARE FEET)
- -------------------------  -------------------------
<S>                        <C>
PHILADELPHIA REGION
  Unisys World Hdqtrs.
    751 Jolly Rd.          Unisys Corp. (100%)
    753 Jolly Rd.          Unisys Corp. (100%)
      Combined Total
    760 Jolly Rd.          Unisys Corp. (100%)
  Merck Building
    785 Jolly Rd.          Unisys Corp. with 50%
                             sublease to Merck & Co.
                             Inc.
HARRISBURG REGION
  Gateway Corporate Ctr.
    6385 Flank Dr.         Cowles Magazines (35%)
                           Orion Capital (27%)
  Commerce Court
    2601 Market Pl.        Penn State Geisinger
                             (38%)
                           Ernst & Young (27%)
                           Texas-Eastern Gas
                             Pipeline Co. (27%)
    2605 Interstate Dr.    PA Emergency Mgmt. Agency
                             (55%)
                           USF&G (23%)
                           Health Central (16%)
PRINCETON REGION
  Teleport National
    Hdqtrs.
    429 Ridge Rd.          Teleport Communication
                             Group (100%)
    437 Ridge Rd.          IBM Corporation with 100%
                             sublease to Teleport
                             Communication Group
  IBM Building
    431 Ridge Rd.          IBM Corporation (100%)
    TOTAL/WEIGHTED
      AVERAGE
</TABLE>
 
- ------------------------
(1) Total Rental Revenue is the monthly contractual base rent as of February 1,
    1998 multiplied by 12 plus the estimated annualized expense reimbursements
    under existing leases except for the Philadelphia Region properties, which
    are triple net leases pursuant to which the tenant pays all operating
    expenses directly.
 
                                       42
<PAGE>
    PHILADELPHIA SUBURBAN MARKET.
 
    REGIONAL ANALYSIS:  Located along the Delaware and Schuylkill Rivers,
Philadelphia is a cosmopolitan city situated at the crossroads of the Northeast
Corridor, the most prosperous and densely populated region in the country. With
a total population of over 5 million according to the 1990 U.S. Census, the
Philadelphia Metropolitan Statistical Area ("MSA") is the fourth largest
metropolitan area in the U.S. Philadelphia boasts a large, highly skilled
workforce which forms the base of one of the most diverse economies in the
nation. Although the Philadelphia metropolitan area is a market in itself, its
location and extensive transportation system provide easy access to 25% of the
U.S. population which lives within a 300-mile radius.
 
    The greatest growth in the past fifteen years in the greater Philadelphia
region has occurred in the suburban counties as migration out of the central
urban core has taken place. The Company's Philadelphia region properties are
located in the Pennsylvania suburban counties within the Philadelphia MSA. The
suburban counties have seen higher growth since 1980 in employment compared to
the Philadelphia central business district as jobs moved from the central
business district and new jobs emerged in the surrounding areas. Management
believes the Pennsylvania suburban counties are well positioned for continued
growth in both employment and population.
 
    PHILADELPHIA SUBURBAN OFFICE MARKET:  As of September 30, 1997, the
Philadelphia Suburban Office Market contained approximately 44.2 million square
feet and is divided into two overall markets, the Pennsylvania Suburban Market
and the Southern New Jersey Market. The Company believes that current and
projected economic trends favor the Pennsylvania Suburban Office Market and
present advantageous conditions for commercial real estate.
 
    As of September 30, 1997, the Pennsylvania Suburban Market was comprised of
approximately 34.7 million square feet of non-owner occupied office space.
Vacancy in the suburban markets increased in the late 1980's, but a significant
improvement has occurred in the past few years. Vacancy at the end of the third
quarter of 1997 stood at 9.3%, a slight increase from 9.2% at the end of 1996,
and a decrease from 14.9% at the end of 1995. Leasing activity during the first
three quarters of 1997 totaled 2,326,949 square feet with net absorption
totaling 365,777 square feet during the period.
 
    Within the Philadelphia Suburban Market, the Pennsylvania Suburban Market
consists of nine separate submarkets. The following table provides certain
information with respect to office properties located in the Pennsylvania
Suburban Market as of September 30, 1997.
 
<TABLE>
<CAPTION>
                                                             OVERALL
                                                            AVAILABLE
                                                              SPACE         OVERALL         LEASING       WEIGHTED
                                                TOTAL        (SQUARE        VACANCY        ACTIVITY      AVG. ASKING
SUBMARKET                                     INVENTORY       FEET)          RATE       THROUGH 9/30/97  RENTAL RATE
- -------------------------------------------  ------------  ------------  -------------  ---------------  -----------
<S>                                          <C>           <C>           <C>            <C>              <C>
Bala Cynwyd................................     2,827,907      210,181           7.4%         173,554     $   24.61
Southern Bucks County......................     2,591,276      356,938          13.8          150,936         17.74
Southern Route 202 Corridor................     3,766,383      685,461          18.2          340,132         20.51
Lehigh & Northampton Counties..............     4,397,524      554,140          12.6          110,680         14.53
Blue Bell/Plymouth Meeting/
  Ft. Washington...........................     4,856,811      272,493           5.6          327,104         19.38
Main Line..................................     2,450,126      105,271           4.3          109,997         22.85
Conshohocken...............................     1,094,018       37,281           3.4          102,058         20.54
Horsham/Willow Grove/Jenkintown............     3,143,323      307,863           9.8          154,137         18.61
King of Prussia/Valley Forge...............     9,590,937      713,885           7.4          858,351         19.65
                                             ------------  ------------                 ---------------
Pennsylvania Suburban Total................    34,718,305    3,243,513           9.3        2,326,949     $   18.96
                                             ------------  ------------                 ---------------
                                             ------------  ------------                 ---------------
</TABLE>
 
- ------------------------
 
Source:  Cushman & Wakefield
 
    Within the Philadelphia Suburban Market, the Company focuses on the western
and southern suburban markets located in Montgomery and Chester Counties. These
markets include the King of
 
                                       43
<PAGE>
Prussia/Valley Forge, Conshohocken, Blue Bell/Plymouth Meeting/Fort Washington,
Southern Route 202 Corridor and the Bala Cynwyd submarkets. These markets
benefit from excellent road networks and transportation systems, making these
markets easily accessible and well positioned for future growth as jobs and the
population exit the Philadelphia central business district.
 
    BLUE BELL/PLYMOUTH MEETING/FORT WASHINGTON SUBMARKET:  As of September 30,
1997, the Blue Bell/ Plymouth Meeting/Fort Washington submarket contained
4,856,811 square feet of non-owner occupied office space. With the opening of
I-476 connecting the Pennsylvania Turnpike to I-95 south of Philadelphia and
connecting to I-76 into Philadelphia, the Blue Bell/Plymouth Meeting/Fort
Washington submarket is located at the crossroads of the primary road network in
the region. As a result, the northern suburbs, especially the prime infill
markets such as Blue Bell/Plymouth Meeting/Fort Washington, made a strong
rebound from the recession and have seen rapidly rising rental rates in the past
year.
 
    The Company owns four properties in the Blue Bell/Plymouth Meeting/Fort
Washington submarket. As of September 30, 1997, this submarket contains
approximately 4.9 million square feet of commercial space and total vacancy for
commercial office space was approximately 5.6%, down from 5.7% at the end of
1996. Absorption of office space in this submarket for the first three quarters
of 1997 totaled 33,697 square feet. Leasing activity through September 30, 1997
totaled 327,104 square feet. The direct weighted average asking rental rate was
$19.38 per square foot as of September 30, 1997, an increase of 9.0% from a rate
of $17.78 per square foot on December 31, 1996.
 
    THE MERCK BUILDING:  The Merck Building is a 218,219 square foot office
building located on 28 acres at 785 Jolly Road in Blue Bell, Montgomery County,
Pennsylvania. The building has a one-story lobby with a structural steel frame
and brick exterior.
 
    The building is currently 50% occupied by Unisys and 50% occupied by Merck &
Co. Inc. ("Merck"), which will be taking the remainder of the building on
January 1, 1999. The building is leased in its entirety to Unisys on a triple
net basis through June 30, 2009 with the tenant responsible for the payment of
all operating and capital improvement expenses of the property. The lease
provides for 2% annual increases in the base rent. Merck has subleased one-half
of the building from Unisys through June 30, 2009, the remainder of the Unisys
lease term. The Merck sublease contains a call option under which Merck can take
the remainder of the space in the building and a put option under which Unisys
can cause Merck to take the remaining space. Merck has exercised its option to
become the sole occupant of the building on January 1, 1999. Under the sublease,
Merck has a direct obligation to pay the landlord if Unisys were to default on
its obligations. The two-story brick building was constructed in 1970 as the
Remington Rand Headquarters and was renovated by Merck in 1996.
 
    UNISYS WORLD HEADQUARTERS:  The Unisys World Headquarters, located on 84
acres in Blue Bell, Montgomery County, Pennsylvania, consists of 736,718 square
feet contained in three office buildings in a suburban office campus setting.
 
    All of the buildings are leased to Unisys under separate leases which expire
June 30, 2009. The buildings are leased on a triple net basis though June 30,
2009 with the tenant responsible for the payment of all operating and capital
improvement expenses of the property. The leases provide for 2% annual increases
in the base rent.
 
    - 751 Jolly Road: The first building comprising the Unisys World
      Headquarters consists of 112,958 square feet in a two-story steel frame
      facility. Exterior walls of glass and concrete panels enclose the
      executive offices, boardroom, and worldwide telecommunications facilities
      of this international corporation. The building was substantially
      renovated by Unisys in 1991.
 
    - 753 Jolly Road: The second building comprising the Unisys World
      Headquarters is a single story office/flex building with structural steel
      frame and brick, block and glass exterior containing 424,380 square feet.
      The building possesses the heavy power capabilities, fiber optics,
      upgraded HVAC and telecommunications and electronic systems necessary to
      support this Fortune 500 technology company. The building contains the
      primary software engineering and development divisions for
 
                                       44
<PAGE>
      Unisys, as well as general offices. Renovation of this building has been
      ongoing since 1993, during which time Unisys has expended over $6 million
      in capital improvements on the building.
 
    Both 751 Jolly Road and 753 Jolly Road are leased under a single lease with
    Unisys, which has posted a cash security deposit in the amount of $12.75
    million under the lease.
 
    - 760 Jolly Road: The third building comprising the Unisys World
      Headquarters is a 199,380 square foot office building situated on 29.67
      acres. This building serves as the headquarters for Unisys' worldwide
      marketing operations. The three-story building consists of structural
      steel framing with brick and concrete panel exterior walls. This
      technologically advanced building contains the latest telecommunications
      and electronic systems, a high tech display center and a cafeteria.
 
    HARRISBURG, PENNSYLVANIA.
 
    REGIONAL ANALYSIS:  The Harrisburg Capital Region is the MSA composed of
Cumberland, Dauphin, Lebanon and Perry counties located midway between
Philadelphia and Pittsburgh. At the center of the area is the city of
Harrisburg, the capital of the Commonwealth of Pennsylvania and seat of Dauphin
County.
 
    With its central location and convenient access to major markets (I-83,
I-81, and the Pennsylvania Turnpike) along the East Coast, Harrisburg has
recently become a fast growing area in the state. The region is strategically
situated along major air, train, and highway arteries. The Company believes that
Harrisburg, which has become a new "edge city" to Philadelphia, is well
positioned for long term growth and stability. The diverse economic base
includes distribution, agriculture, retail and wholesale trade, light and heavy
manufacturing, the federal military and state government activities.
 
    Over the last decade, employment opportunities have increased by 20% in the
Harrisburg region with job growth in the private sector growing by 25% in the
period from 1980 to 1990. The Harrisburg area's unemployment rate has
consistently been lower than the state's and the nation's.
 
    HARRISBURG OFFICE MARKET:  The Harrisburg office market, which as of
September 30, 1997 consisted of 9.8 million square feet in 467 buildings, has
continued a strong recovery with the overall office occupancy level of 91.2% at
the end of the third quarter of 1997. Class A vacancy levels were 3.6% by the
end of the third quarter of 1997. The Harrisburg office market positively
absorbed over 90,000 square feet of office space in 1997. The Harrisburg office
market consists of three primary submarkets: the Downtown Business District, the
West Shore Business District, and the East Shore Business District.
 
<TABLE>
<CAPTION>
                                                                                                        AVERAGE
                                                                                                        CLASS A
                                                                            TOTAL        VACANCY      ASKING RATE      VACANCY
                                                NUMBER OF      TOTAL      AVAILABLE    RATE (AS OF      (AS OF       RATE (AS OF
SUBMARKET                                       BUILDINGS    INVENTORY   SQUARE FEET    9/30/97)       9/30/97)       12/31/96)
- --------------------------------------------  -------------  ----------  -----------  -------------  -------------  -------------
<S>                                           <C>            <C>         <C>          <C>            <C>            <C>
Downtown Business District..................          146     3,408,240     269,554           7.9%     $   17.25            8.7%
East Shore..................................          145     2,389,964     264,734          11.1          17.50           11.4
West Shore..................................          176     3,980,231     328,382           8.3          17.75            7.0
                                                      ---    ----------  -----------
    Total...................................          467     9,778,435     862,670           8.8                           8.7
                                                      ---    ----------  -----------
                                                      ---    ----------  -----------
</TABLE>
 
- ------------------------
 
Source:  Landmark Commercial Realty, Inc.
 
    The Company believes that the stability provided by the presence of the
state capital coupled with the strong growth prospects due to Harrisburg's
central location within the transportation network make Harrisburg an excellent
market for commercial properties.
 
    EAST SHORE SUBMARKET:  The East Shore submarket, which is the newest of the
three submarkets, contained 2,389,964 square feet of office space as of
September 30, 1997. With limited new construction, the market has tightened and
effective rents have recently increased.
 
    The Company owns three properties in the East Shore submarket. As of
September 30, 1997, total vacancy for commercial office space in this submarket
was approximately 11.0%, down from 11.4% at the
 
                                       45
<PAGE>
end of 1996. Absorption of office space in this submarket for the first three
quarters of 1997 totaled 25,000 square feet. The Company has leased over 45,000
square feet of space within its properties during the fourth quarter of 1997,
bringing occupancy to 99.4%.
 
    GATEWAY CORPORATE CENTER:  The Gateway Corporate Center is a corporate
office park strategically located on the East Shore, just six and a half miles
from downtown Harrisburg in Lower Paxton Township. Gateway Corporate Center,
consisting of 67 landscaped acres, is Harrisburg's first comprehensive business
park. The Gateway Corporate Center contains 335,000 rentable square feet in
seven buildings with an overall occupancy of 99%. When completed, the park will
have in excess of 410,000 rentable square feet.
 
    - 6385 Flank Drive: 6385 Flank Drive was built in 1995 and consists of a
      single-story brick and glass office building of 32,800 rentable square
      feet located in the Gateway Corporate Center. The building is occupied on
      a multi-tenant basis with lease up reaching 100% in 1997. Primary tenants
      include Cowles Magazines, Orion Capital and Pitney Bowes.
 
    COMMERCE PARK:  Commerce Park is a multiple ownership corporate office park
located at the intersection of I-81 and I-83 in the East Shore Market of
Harrisburg. Commerce Park is three miles from downtown Harrisburg in Susquehanna
Township. When completed, the park will have in excess of 900,000 square feet on
150 acres.
 
    - Commerce Court: Commerce Court is a four-story office building built in
      1989 and located on 8.5 acres in Commerce Park. The existing building
      contains 67,377 rentable square feet and consists of a structural steel
      frame with brick and reflective glass facade. Commerce Court is leased on
      a multi-tenant basis with Texas Eastern, Ernst & Young and Penn State
      Geisinger Health Systems as primary tenants.
 
    - 2605 Interstate Drive: 2605 Interstate Drive is an 84,268 rentable square
      feet three-story office building and is located on 5.75 acres in Commerce
      Park. The building was constructed in 1990 and consists of a structural
      steel frame and concrete panel and reflective glass exterior. The building
      is leased on a multi-tenant basis with the Pennsylvania Emergency
      Management Agency and USF&G as the primary tenants.
 
    PRINCETON, NEW JERSEY.
 
    REGIONAL ANALYSIS:  Central New Jersey enjoys a premium location between the
major metropolitan areas of New York and Philadelphia. The central counties'
(Middlesex, Mercer and Somerset) equidistant position between these cities,
together with favorable demographics and high quality of life, have made them
highly favorable for commercial properties. In fact, the three counties are the
geographic center of the entire Northeastern Corridor, stretching from Boston to
Washington, DC, with both urban centers located within 250 miles.
 
    The Princeton Technology Center is included in a geographic region
collectively referred to as "Princeton," which stretches southward from South
Brunswick in Middlesex County to Hamilton in Mercer County. Since 1980, there
has developed an image of prestige at being located in the Princeton area. The
office real estate market has increased eightfold since 1980. Large corporations
such as Merrill Lynch, Bristol-Myers Squibb, AT&T, Johnson & Johnson, Dow Jones,
Raytheon, Rhone Poulenc Rorer and Wyeth Ayerst have relocated major divisions to
the area. The area's proximity to major roadways, including I-95 and the New
Jersey Turnpike, make it a valuable distribution center.
 
    The Princeton Technology Center is located in the southwestern corner of
Middlesex County, close to the border of Mercer County. Private sector
non-agricultural employment increased in Middlesex County from 1981 to 1990,
rising by 60,000 or 25.1%. The county population increased by 12.7% to a total
of 671,780 over the same period. This growth has helped earn Central New Jersey
the designation as second place in Money Magazine's "300 Best Areas to Live in
America."
 
    PRINCETON OFFICE MARKET:  The Princeton office market, which as of September
30, 1997 consisted of approximately 14.4 million square feet, experienced the
corporate downsizing of the early 1990's, reaching a vacancy level of 21% in
1993. However, the market has recovered, particularly the heart of the market,
 
                                       46
<PAGE>
the Route 1 corridor, and vacancy levels have dropped from 16.1% at December 31,
1996 to 8.2% at September 30, 1997.
 
    The Princeton office market consists of six submarkets:
 
<TABLE>
<CAPTION>
                                                                                                          AVERAGE
                                                   NUMBER                                   VACANCY       ASKING        VACANCY
                                                     OF           TOTAL        TOTAL       RATE (AS      RATE PER      RATE (AS
                                                  BUILDINGS     INVENTORY    AVAILABLE    OF 9/30/97)   SQUARE FOOT  OF 12/31/96)
                                                -------------  ------------  ----------  -------------  -----------  -------------
<S>                                             <C>            <C>           <C>         <C>            <C>          <C>
Route 1 Corridor..............................          104       7,229,951     445,700          6.2%    $   20.45           9.3%
Princeton--Route 206..........................           45       1,260,017      84,675          6.7         19.44          16.2
Exit 8A--Cranbury.............................           43       1,877,006     148,616          7.9         18.03          40.0
Hamilton--Windsor.............................           13         645,770     150,390         23.3         17.35          18.4
Lawrenceville--Ewing..........................           44       1,833,167     262,321         14.3         18.63          16.3
Trenton.......................................           13       1,615,422      92,054          5.7         19.50           7.5
                                                        ---    ------------  ----------
    Total.....................................          262      14,461,333   1,183,756          8.2                        16.1
                                                        ---    ------------  ----------
                                                        ---    ------------  ----------
</TABLE>
 
- ------------------------
 
Source:  Buschman Jackson-Cross
 
    The Company believes that the strong growth prospects of the Princeton
market make Princeton an excellent market for commercial properties. Princeton
has become an attractive alternative to the New York/North Jersey office market.
 
    Exit 8A--Cranbury Submarket: The Exit 8A--Cranbury submarket contains
1,877,006 square feet of office space. The access to the New Jersey Turnpike,
Route 1, and Route 130 has helped to establish the Exit 8A--Cranbury submarket
as a premier distribution location since the early 1980s.
 
    The Company owns three properties in the Exit 8A--Cranbury submarket. As of
September 30, 1997, total vacancy for commercial office space was approximately
7.9%, down from 40.0% at the end of 1996. Vacancy was distorted in 1996 when
Continental Insurance put 500,000 square feet on the sublease market. This space
was re-absorbed in 1997.
 
    Princeton Technology Center: The Princeton Technology Center, a corporate
business park located on 18.8 acres in Dayton, New Jersey, consists of three
parcels and 342,385 rentable square feet contained in three separate
buildings--two office buildings and an office/flex building.
 
    - 429 Ridge Road: The first of two buildings leased to TCG is a 142,385
      rentable square feet three-story building on 14 acres. TCG is a rapidly
      expanding, leading fiber optic based telecommunications company. In
      January 1998, AT&T announced its agreement to acquire TCG. This
      three-story building has a structural steel frame with brick, metal panel
      and glass exterior. TCG operates a National Monitoring Center and its
      national training headquarters at this location and has made a
      multi-million dollar investment in the building. The initial term of TCG's
      lease ends in 2008. The building was totally renovated in 1996 and
      provides the latest in technologically advanced telecommunications and
      electronics capabilities.
 
    - 437 Ridge Road: The second of the buildings leased to TCG consists of a
      30,000 rentable square feet single-story building. The building has a
      glass exterior along with a glass enclosed landscaped courtyard. TCG
      occupies the building under a sublease with IBM through April 2002, and a
      direct lease extending its occupancy through December 2006. This facility
      houses the Chief Executive Officer and other executive officers. TCG
      totally renovated this building at a cost exceeding $2 million for TCG's
      initial occupancy beginning November 1, 1996.
 
    - 431 Ridge Road: 431 Ridge Road is a 170,000 rentable square feet
      single-story office and research building which is leased in its entirety
      to IBM through March 31, 2002. The building has a structural steel frame
      with glass, metal panel and block exterior. The large floorplate, ample
      parking and ceiling height make the building highly adaptable for either
      office or research uses.
 
                                       47
<PAGE>
THE RETAIL PROPERTIES.
 
    Set forth below is certain information with respect to the Company's retail
properties.
<TABLE>
<CAPTION>
                                                      PERCENTAGE                   PERCENTAGE      TOTAL RENTAL
                             YEAR                       LEASED         TOTAL        OF TOTAL          REVENUE
                            BUILT/       RENTABLE       (AS OF        RENTAL         RENTAL         PER SQUARE
PROPERTY LOCATION          RENOVATED    SQUARE FEET     2/1/98)     REVENUE(1)     REVENUE(1)         FOOT(1)
- -----------------------  -------------  -----------  -------------  -----------  ---------------  ---------------
<S>                      <C>            <C>          <C>            <C>          <C>              <C>
SUPERVALU STORES, INC.
  Indianapolis, IN
    5835 West 10th St.          1991        67,541         100.0%    $ 548,196           22.5%       $    8.12
  Plymouth, MN
    3550 Vicksburg Ln.          1991        67,510         100.0       522,813           21.4             7.74
 
NASH-FINCH STORES
  Minot, ND
    2100 S. Broadway            1993        46,134         100.0       305,774           12.5             6.63
  Peru, IL
    1351 38th St. North         1993        60,232         100.0       334,776           13.7             5.56
 
FLEMING COMPANIES
  STORES
  Delafield, WI
    3265 Golf Rd.               1994        52,800         100.0       312,201           12.8             5.91
  Glendale, WI
    7601 N. Port
      Washington Rd.            1992        36,248         100.0       168,300            6.9             4.64
  Oconomowac, WI
    630 E. Wisconsin
      Ave.                      1994        39,272         100.0       249,125           10.2             6.34
                                        -----------                 -----------         -----
 
  TOTAL/WEIGHTED
    AVERAGE                                369,737         100.0%    $2,441,185         100.0%       $    6.60
                                        -----------                 -----------         -----
                                        -----------                 -----------         -----
 
<CAPTION>
PROPERTY LOCATION               TENANTS
- -----------------------  ----------------------
<S>                      <C>
SUPERVALU STORES, INC.
  Indianapolis, IN
    5835 West 10th St.   SV Ventures
  Plymouth, MN
    3550 Vicksburg Ln.   Innsbruck Investments
NASH-FINCH STORES
  Minot, ND
    2100 S. Broadway     Nash-Finch Company
  Peru, IL
    1351 38th St. North  Nash-Finch Company
FLEMING COMPANIES
  STORES
  Delafield, WI
                         Fleming Companies,
    3265 Golf Rd.          Inc.
  Glendale, WI
    7601 N. Port         Fleming Companies,
      Washington Rd.       Inc.
  Oconomowac, WI
    630 E. Wisconsin     Fleming Companies,
      Ave.                 Inc.
  TOTAL/WEIGHTED
    AVERAGE
</TABLE>
 
- ------------------------
(1) Total Rental Revenue is the monthly contractual base rent as of February 1,
    1998 multiplied by 12.
 
                                       48
<PAGE>
TENANTS
 
    The following table sets forth certain information with respect to the
Company's office and retail tenants.
 
<TABLE>
<CAPTION>
                                                                                                                       PERCENTAGE
                                             NUMBER       REMAINING                      PERCENTAGE OF    AGGREGATE   OF AGGREGATE
                                               OF        LEASE TERM     TOTAL RENTAL     TOTAL RENTAL      LEASED        LEASED
TENANT NAME                                  LEASES       IN MONTHS   REVENUE($000)(1)    REVENUE(1)     SQUARE FEET   SQUARE FEET
- ----------------------------------------  -------------  -----------  ----------------  ---------------  -----------  -------------
<S>                                       <C>            <C>          <C>               <C>              <C>          <C>
OFFICE TENANTS
Unisys Corporation......................            3           137      $    7,895(2)          39.7%       845,827          45.7%
Teleport Communications Group...........            2            (3)          3,092             15.5        172,385           9.3
IBM.....................................            1            50           2,767             13.9        170,000           9.2
Merck (4)...............................            1           137           1,048(2)           5.3        109,110           5.9
Penna. Emergency Mgmt. Agency(5)........            1            46             636              3.2         47,328           2.6
Penn State Geisinger....................            2            (6)            411              2.1         25,428           1.4
Ernst & Young...........................            1           117             292              1.5         17,499           0.9
Texas Eastern...........................            1            28             286              1.4         17,363           0.9
USF&G...................................            1            53             272              1.4         19,903           1.1
Health Central..........................            1            35             190              1.0         12,699           0.7
Cowles Magazines........................            1            50             149              0.7         11,309           0.6
Orion Capital...........................            1            33             117              0.6          8,640           0.5
Pitney Bowes............................            1            40              87              0.4          6,898           0.4
Aerotek.................................            1            20              62              0.3          4,338           0.2
Groundwater Sciences....................            1            39              56              0.3          4,420           0.2
Orion Consulting........................            1            52              45              0.2          3,566           0.2
Hershey Foods...........................            1            51              34              0.2          2,387           0.1
McGraw-Hill.............................            1            52              26              0.1          1,467           0.1
                                                   --
                                                                            -------            -----     -----------        -----
    Total Office Properties.............           22                        17,464             87.7      1,480,567          80.0
RETAIL TENANTS
Fleming Companies, Inc..................            3            (7)            730              3.7        128,320           6.9
Nash-Finch Company (8)..................            2           191             640              3.2        106,366           5.7
SV Ventures (9).........................            1           165             548              2.8         67,541           3.7
Innsbruck Investments (10)..............            1           157             523              2.6         67,510           3.6
                                                   --
                                                                            -------            -----     -----------        -----
    Total Retail Properties.............            7                         2,441             12.3        369,737          20.0
                                                   --
                                                                            -------            -----     -----------        -----
Total...................................           29                    $   19,905            100.0%     1,850,304         100.0%
                                                   --
                                                   --
                                                                            -------            -----     -----------        -----
                                                                            -------            -----     -----------        -----
</TABLE>
 
- ------------------------
(1) Total Rental Revenue is the monthly contractual base rent as of February 1,
    1998 multiplied by 12, plus the estimated annualized expense reimbursements
    under existing leases, except for the Philadelphia Region properties and the
    retail properties which are triple net leases for which the tenant pays all
    operating expenses directly.
 
(2) Property occupied under a triple net lease agreement, pursuant to which the
    tenant directly pays all building operating expenses.
 
(3) Teleport leases 142,385 square feet which expires in February 2008 and
    30,000 square feet which expires in December 2006. The 30,000 square feet
    are subleased from IBM through April 2002 and directly leased through 2006.
 
(4) Lease is with Unisys. Merck subleases 109,110 square feet with an option to
    lease an additional 109,109 square feet on January 1, 1999.
 
(5) Aggregate Leased Square Feet has been adjusted from a 43,828 useable square
    feet lease to 47,828 rentable square feet for comparability.
 
(6) Penn State Geisinger leases 17,665 square feet through October 2007 and
    7,763 square feet through October 2000. Both leases are in the Commerce
    Court property.
 
(7) Fleming Companies, Inc. has three leases consisting of 36,248 square feet,
    39,272 square feet and 52,800 square feet. The leases expire in September
    2010, May 2014 and November 2014, respectively.
 
(8) Nash-Finch has two leases consisting of 60,232 square feet and 46,134 square
    feet. Both leases expire in January 2014.
 
(9) SV Ventures is a wholly owned subsidiary of SuperValu, Inc. SuperValu, Inc.
    has guaranteed this lease through 2006.
 
(10) Franchisee of SuperValu, Inc. The Company pays SuperValu, Inc. a credit
    enhancement fee to guarantee payment under the lease through 2001.
 
                                       49
<PAGE>
LEASE EXPIRATION--PORTFOLIO TOTAL
 
    The following table sets forth a summary schedule of the lease expirations
for the Trust's properties for leases in place as of February 1, 1998, assuming
that none of the tenants exercise renewal options.
 
<TABLE>
<CAPTION>
                                                                         TOTAL RENTAL     TOTAL RENTAL
                                             SQUARE                       REVENUE OF         REVENUE
                                           FOOTAGE OF   PERCENTAGE OF      EXPIRING        OF EXPIRING        PERCENTAGE OF
                             NUMBER OF      EXPIRING   TOTAL OCCUPIED       LEASES         LEASES PER         TOTAL RENTAL
PERIOD OF EXPIRATION      LEASES EXPIRING    LEASES      SQUARE FEET       ($000)(1)     SQUARE FOOT(1)    REVENUE EXPIRING(1)
- ------------------------  ---------------  ----------  ---------------  ---------------  ---------------  ---------------------
<S>                       <C>              <C>         <C>              <C>              <C>              <C>
1998....................             0              0           0.0%       $       0        $    0.00                 0.0%
1999....................             1          4,420           0.2               56            12.65                 0.3
2000....................             4         46,465           2.5              712            15.33                 3.6
2001....................             3         58,564           3.2              784            13.40                 3.9
2002....................             6        208,632          11.3            3,293            15.78                16.5
2003....................             0              0           0.0                0             0.00                 0.0
2004....................             0              0           0.0                0             0.00                 0.0
2005....................             0              0           0.0                0             0.00                 0.0
2006....................             1         30,000           1.6              583            19.43                 2.9
2007....................             2         35,164           1.9              584            16.60                 2.9
2008 and beyond.........            12      1,467,059          79.3           13,893             9.47                69.8
                                    --
                                           ----------         -----          -------                                -----
Total...................            29      1,850,304         100.0%       $  19,905            10.76               100.0%
                                    --
                                    --
                                           ----------         -----          -------                                -----
                                           ----------         -----          -------                                -----
</TABLE>
 
- ------------------------
 
(1) Total Rental Revenue is the monthly contractual base rent as of February 1,
    1998 multiplied by 12, plus the estimated annualized expense reimbursements
    under existing leases, except for the Philadelphia Region properties and the
    retail properties which are triple net leases for which the tenant pays all
    operating expenses directly.
 
                                       50
<PAGE>
LEASE EXPIRATIONS BY PROPERTY
 
    The following table sets forth a schedule of lease expirations by property
for leases in place as of February 1, 1998, for each of the 10 full and partial
calendar years beginning February 1, 1998, assuming that none of the tenants
exercise renewal options and excluding an aggregate 1,200 square feet of vacant
space.
<TABLE>
<CAPTION>
                                                     1998       1999       2000       2001       2002       2003       2004
                                                   ---------  ---------  ---------  ---------  ---------  ---------  ---------
<S>                       <C>                      <C>        <C>        <C>        <C>        <C>        <C>        <C>
OFFICE PROPERTIES
- ------------------------
PHILADELPHIA REGION
  751 Jolly Road          Square Feet (1)                  0          0          0          0          0          0          0
                          % Square Feet (2)             0.0%       0.0%       0.0%       0.0%       0.0%       0.0%       0.0%
                          Total Rental Revenue     $       0  $       0  $       0  $       0  $       0  $       0  $       0
                          (3)
                          Number of Leases                 0          0          0          0          0          0          0
                          Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00
 
  753 Jolly Road          Square Feet (1)                  0          0          0          0          0          0          0
                          % Square Feet (2)             0.0%       0.0%       0.0%       0.0%       0.0%       0.0%       0.0%
                          Total Rental Revenue     $       0  $       0  $       0  $       0  $       0  $       0  $       0
                          (3)
                          Number of Leases                 0          0          0          0          0          0          0
                          Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00
 
  760 Jolly Road          Square Feet (1)                  0          0          0          0          0          0          0
                          % Square Feet (2)             0.0%       0.0%       0.0%       0.0%       0.0%       0.0%       0.0%
                          Total Rental Revenue     $       0  $       0  $       0  $       0  $       0  $       0  $       0
                          (3)
                          Number of Leases                 0          0          0          0          0          0          0
                          Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00
 
  785 Jolly Road          Square Feet (1)                  0          0          0          0          0          0          0
                          % Square Feet (2)             0.0%       0.0%       0.0%       0.0%       0.0%       0.0%       0.0%
                          Total Rental Revenue     $       0  $       0  $       0  $       0  $       0  $       0  $       0
                          (3)
                          Number of Leases                 0          0          0          0          0          0          0
                          Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00
 
HARRISBURG REGION
  6385 Flank Drive        Square Feet (1)                  0          0      8,640      6,898     17,262          0          0
                          % Square Feet (2)             0.0%       0.0%      26.3%      21.0%      52.6%       0.0%       0.0%
                          Total Rental Revenue     $       0  $       0  $ 116,726  $  86,915  $ 227,974  $       0  $       0
                          (3)
                          Number of Leases                 0          0          1          1          3          0          0
                          Rent per Square Foot     $    0.00  $    0.00  $   13.51  $   12.60  $   13.21  $    0.00  $    0.00
 
  2601 Market Place       Square Feet (1)                  0      4,420     25,126          0      1,467          0          0
                          % Square Feet (2)             0.0%       6.6%      37.3%       0.0%       2.2%       0.0%       0.0%
                          Total Rental Revenue     $       0  $  55,930  $ 406,040  $       0  $  25,673  $       0  $       0
                          (3)
                          Number of Leases                 0          1          2          0          1          0          0
                          Rent per Square Foot     $    0.00  $   12.65  $   16.16  $    0.00  $   17.50  $    0.00  $    0.00
 
  2605 Interstate Drive   Square Feet (1)                  0          0     12,699     51,666     19,903          0          0
                          % Square Feet (2)             0.0%       0.0%      15.1%      61.3%      23.6%       0.0%       0.0%
                          Total Rental Revenue     $       0  $       0  $ 189,723  $ 697,761  $ 271,676  $       0  $       0
                          (3)
                          Number of Leases                 0          0          1          2          0          0          0
                          Rent per Square Foot     $    0.00  $    0.00  $   14.94  $   13.51  $   13.65  $    0.00  $    0.00
 
<CAPTION>
                                                            2008 AND
                            2005       2006       2007       BEYOND      TOTALS
                          ---------  ---------  ---------  ----------  -----------
<S>                       <C>        <C>        <C>        <C>         <C>
OFFICE PROPERTIES
- ------------------------
PHILADELPHIA REGION
  751 Jolly Road                  0          0          0     112,958      112,958
                               0.0%       0.0%       0.0%      100.0%       100.0%
                          $       0  $       0  $       0  $1,425,955  $ 1,425,955
 
                                  0          0          0           1            1
                          $    0.00  $    0.00  $    0.00  $    12.62  $     12.62
  753 Jolly Road                  0          0          0     424,380      424,380
                               0.0%       0.0%       0.0%      100.0%       100.0%
                          $       0  $       0  $       0  $2,903,216  $ 2,903,216
 
                                  0          0          0           1            1
                          $    0.00  $    0.00  $    0.00  $     6.84  $      6.84
  760 Jolly Road                  0          0          0     199,380      199,380
                               0.0%       0.0%       0.0%      100.0%       100.0%
                          $       0  $       0  $       0  $2,516,925  $ 2,516,925
 
                                  0          0          0           1            1
                          $    0.00  $    0.00  $    0.00  $    12.62  $     12.62
  785 Jolly Road                  0          0          0     218,219      218,219
                               0.0%       0.0%       0.0%      100.0%       100.0%
                          $       0  $       0  $       0  $2,096,951  $ 2,096,951
 
                                  0          0          0           2            2
                          $    0.00  $    0.00  $    0.00  $     9.61  $      9.61
HARRISBURG REGION
  6385 Flank Drive                0          0          0           0       32,800
                               0.0%       0.0%       0.0%        0.0%       100.0%
                          $       0  $       0  $       0  $        0  $   431,616
 
                                  0          0          0           0            5
                          $    0.00  $    0.00  $    0.00  $     0.00  $     13.16
  2601 Market Place               0          0     35,164           0       66,177
                               0.0%       0.0%      52.2%        0.0%        98.3%
                          $       0  $       0  $ 583,706  $        0  $ 1,071,348
 
                                  0          0          2           0            6
                          $    0.00  $    0.00  $   16.60  $     0.00  $     16.19
  2605 Interstate Drive           0          0          0           0       84,268
                               0.0%       0.0%       0.0%        0.0%       100.0%
                          $       0  $       0  $       0  $        0  $ 1,159,160
 
                                  0          0          0           0            3
                          $    0.00  $    0.00  $    0.00  $     0.00  $     13.76
</TABLE>
 
                                       51
<PAGE>
<TABLE>
<CAPTION>
                                                                1998       1999       2000       2001       2002       2003
                                                              ---------  ---------  ---------  ---------  ---------  ---------
<S>                                  <C>                      <C>        <C>        <C>        <C>        <C>        <C>
OFFICE PROPERTIES
- -----------------------------------
PRINCETON REGION
  429 Ridge Road                     Square Feet (1)                  0          0          0          0          0          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%       0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $       0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0          0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00
 
  431 Ridge Road                     Square Feet (1)                  0          0          0          0    170,000          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%     100.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $2,767,414 $       0
                                     (3)
                                     Number of Leases                 0          0          0          0          1          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $   16.28  $    0.00
 
  437 Ridge Road                     Square Feet (1)                  0          0          0          0          0          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%       0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $       0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0          0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00
 
TOTAL OFFICE PROPERTIES              Square Feet (1)                  0      4,420     46,465     58,564    208,632          0
                                     % Square Feet (2)             0.0%       0.3%       3.1%       4.0%      14.1%       0.0%
                                     Total Rental Revenue     $       0  $  55,930  $ 712,489  $ 784,676  $3,292,736 $       0
                                     (3)
                                     Number of Leases                 0          1          4          3          5          0
                                     Rent per Square Foot     $    0.00  $   12.65  $   15.33  $   13.40  $   15.78  $    0.00
 
RETAIL PROPERTIES
- -----------------------------------
  Plymouth                           Square Feet (1)                  0          0          0          0          0          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%       0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $       0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0          0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00
 
  Indianapolis                       Square Feet (1)                  0          0          0          0          0          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%       0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $       0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0          0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00
 
  Glendale                           Square Feet (1)                  0          0          0          0          0          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%       0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $       0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0          0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $    0.00  $    0.00
 
<CAPTION>
                                                                                  2008 AND
                                       2004       2005       2006       2007       BEYOND      TOTALS
                                     ---------  ---------  ---------  ---------  ----------  ----------
<S>                                  <C>        <C>        <C>        <C>        <C>         <C>
OFFICE PROPERTIES
- -----------------------------------
PRINCETON REGION
  429 Ridge Road                             0          0          0          0     142,385     142,385
                                          0.0%       0.0%       0.0%       0.0%      100.0%      100.0%
                                     $       0  $       0  $       0  $       0  $2,508,824  $2,508,824
 
                                             0          0          0          0           1           1
                                     $    0.00  $    0.00  $    0.00  $    0.00  $    17.62  $    17.62
  431 Ridge Road                             0          0          0          0           0     170,000
                                          0.0%       0.0%       0.0%       0.0%        0.0%      100.0%
                                     $       0  $       0  $       0  $       0  $        0  $2,767,414
 
                                             0          0          0          0           0           1
                                     $    0.00  $    0.00  $    0.00  $    0.00  $     0.00  $    16.28
  437 Ridge Road                             0          0     30,000          0           0      30,000
                                          0.0%       0.0%     100.0%       0.0%      100.0%      100.0%
                                     $       0  $       0  $ 582,867  $       0  $        0  $  582,867
 
                                             0          0          1          0           1           1
                                     $    0.00  $    0.00  $   19.43  $    0.00  $     0.00  $    19.43
TOTAL OFFICE PROPERTIES                      0          0     30,000     35,164   1,097,322   1,480,567
                                          0.0%       0.0%       2.0%       2.4%       74.1%       99.9%
                                     $       0  $       0  $ 582,867  $ 583,706  $11,451,871 $17,464,275
 
                                             0          0          1          2           6          22
                                     $    0.00  $    0.00  $   19.43  $   16.60  $    10.44  $    11.80
RETAIL PROPERTIES
- -----------------------------------
  Plymouth                                   0          0          0          0      67,510      67,510
                                          0.0%       0.0%       0.0%       0.0%      100.0%      100.0%
                                     $       0  $       0  $       0  $       0  $  522,813  $  522,813
 
                                             0          0          0          0           1           1
                                     $    0.00  $    0.00  $    0.00  $    0.00  $     7.74  $     7.74
  Indianapolis                               0          0          0          0      67,541      67,541
                                          0.0%       0.0%       0.0%       0.0%      100.0%      100.0%
                                     $       0  $       0  $       0  $       0  $  548,196  $  548,196
 
                                             0          0          0          0           1           1
                                     $    0.00  $    0.00  $    0.00  $    0.00  $     8.12  $     8.12
  Glendale                                   0          0          0          0      36,248      36,248
                                          0.0%       0.0%       0.0%       0.0%      100.0%      100.0%
                                     $       0  $       0  $       0  $       0  $  168,300  $  168,300
 
                                             0          0          0          0           1           1
                                     $    0.00  $    0.00  $    0.00  $    0.00  $     4.64  $     4.64
</TABLE>
 
                                       52
<PAGE>
<TABLE>
<CAPTION>
                                                                1998       1999       2000       2001        2002       2003
                                                              ---------  ---------  ---------  ---------  ----------  ---------
<S>                                  <C>                      <C>        <C>        <C>        <C>        <C>         <C>
RETAIL PROPERTIES
- -----------------------------------
  Peru                               Square Feet (1)                  0          0          0          0           0          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%        0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $        0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0           0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $     0.00  $    0.00
 
  Oconomowac                         Square Feet (1)                  0          0          0          0           0          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%        0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $        0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0           0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $     0.00  $    0.00
 
  Minot                              Square Feet (1)                  0          0          0          0           0          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%        0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $        0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0           0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $     0.00  $    0.00
 
  Delafield                          Square Feet (1)                  0          0          0          0           0          0
                                     % Square Feet (2)             0.0%       0.0%       0.0%       0.0%        0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $        0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0           0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $     0.00  $    0.00
 
TOTAL RETAIL                         Square Feet (1)          $       0  $       0  $       0  $       0  $        0  $       0
  PROPERTIES                         % Square Feet (2)             0.0%       0.0%       0.0%       0.0%        0.0%       0.0%
                                     Total Rental Revenue     $       0  $       0  $       0  $       0  $        0  $       0
                                     (3)
                                     Number of Leases                 0          0          0          0           0          0
                                     Rent per Square Foot     $    0.00  $    0.00  $    0.00  $    0.00  $     0.00  $    0.00
 
TOTAL PROPERTIES                     Square Feet (1)                  0      4,420     46,465     58,564     208,632          0
                                     % Square Feet (2)             0.0%       0.2%       2.5%       3.2%       11.3%       0.0%
                                     Total Rental Revenue     $       0  $  55,930  $ 712,489  $ 784,676  $3,292,736  $       0
                                     (3)
                                     Number of Leases                 0          1          4          3           5          0
                                     Rent per Square Foot     $    0.00  $   12.65  $   15.33  $   13.40  $    15.78  $    0.00
 
<CAPTION>
                                                                                  2008 AND
                                       2004       2005       2006       2007       BEYOND     TOTALS
                                     ---------  ---------  ---------  ---------  ----------  ---------
<S>                                  <C>        <C>        <C>        <C>        <C>         <C>
RETAIL PROPERTIES
- -----------------------------------
  Peru                                       0          0          0          0      60,232     60,232
                                          0.0%       0.0%       0.0%       0.0%      100.0%     100.0%
                                     $       0  $       0  $       0  $       0  $  334,776  $ 334,776
 
                                             0          0          0          0           1          1
                                     $    0.00  $    0.00  $    0.00  $    0.00  $     5.56  $    5.56
  Oconomowac                                 0          0          0          0      39,272     39,272
                                          0.0%       0.0%       0.0%       0.0%      100.0%     100.0%
                                     $       0  $       0  $       0  $       0  $  249,125  $ 249,125
 
                                             0          0          0          0           1          1
                                     $    0.00  $    0.00  $    0.00  $    0.00  $     6.34  $    6.34
  Minot                                      0          0          0          0      46,134     46,134
                                          0.0%       0.0%       0.0%       0.0%      100.0%     100.0%
                                     $       0  $       0  $       0  $       0  $  305,774  $ 305,774
 
                                             0          0          0          0           1          1
                                     $    0.00  $    0.00  $    0.00  $    0.00  $     6.63  $    6.63
  Delafield                                  0          0          0          0      52,800     52,800
                                          0.0%       0.0%       0.0%       0.0%      100.0%     100.0%
                                     $       0  $       0  $       0  $       0  $  312,201  $ 312,201
 
                                             0          0          0          0           1          1
                                     $    0.00  $    0.00  $    0.00  $    0.00  $     5.91  $    5.91
TOTAL RETAIL                         $       0  $       0  $  30,000  $       0  $  369,737  $ 369,737
  PROPERTIES                              0.0%       0.0%       0.0%       0.0%      100.0%     100.0%
                                     $       0  $       0  $       0  $       0  $2,441,185  $2,441,185
 
                                             0          0          0          0           7          7
                                     $    0.00  $    0.00  $    0.00  $    0.00  $     6.60  $    6.60
TOTAL PROPERTIES                             0          0     30,000     35,164   1,467,059  1,850,304
                                          0.0%       0.0%       1.6%       1.9%       79.3%      99.9%
                                     $       0  $       0  $ 582,867  $ 583,706  $13,893,056 $19,905,460
 
                                             0          0          1          2          13         29
                                     $    0.00  $    0.00  $   19.43  $   16.60  $     9.47  $   10.76
</TABLE>
 
- ------------------------
(1) Total net rentable square feet represented by expiring leases.
 
(2) Percentage of total net rentable square feet represented by expiring leases.
 
(3) Total Rental Revenue is the monthly contractual base rent as of February 1,
    1998 multiplied by 12, plus the estimated annualized expense reimbursements
    under existing leases, except for the Philadelphia Region properties and the
    retail properties which are triple net leases for which the tenant pays all
    operating expenses directly.
 
                                       53
<PAGE>
                              DISTRIBUTION POLICY
 
    The Trust, in order to qualify as a REIT, is required to make distributions
(other than capital gains distributions) to its shareholders each year in an
amount at least equal to (a) the sum of (i) 95% of the Trust's REIT taxable
income for such year (computed without regard to the dividends paid deduction
and the Trust's net capital gain) and (ii) 95% of the net income (after tax), if
any, from foreclosure property, minus (b) the sum of certain items of non-cash
income. Such distributions as are required to maintain the Trust's REIT status
must be paid in the taxable year to which they relate, or in the following
taxable year if declared before the Trust timely files its tax return for the
earlier year and if paid on or before the first regular distribution payment
after such declaration. To the extent that the Trust does not distribute all of
its net capital gain or distributes at least 95%, but less than 100%, of its
REIT taxable income, as adjusted, it will be subject to tax on the undistributed
amounts at regular corporate tax rates; provided, however, that, as discussed
below, effective for taxable years of the Trust beginning on or after January 1,
1998, the Trust's shareholders may claim a credit for taxes paid by the Trust in
respect of undistributed net capital gains if the Trust so elects. Furthermore,
if the Trust should fail to distribute during each calendar year at least the
sum of (A) 85% of its ordinary income for such year, (B) 95% of its capital gain
net income for such year, and (C) any undistributed taxable income from prior
periods, the Trust would be subject to a 4% excise tax on the excess of the
required distribution over the amounts actually distributed. Distributions
declared by the Trust in October, November or December of a calendar year
payable to shareholders of record on a specified date in any such month will be
deemed to have been paid by the Trust and received by each shareholder on
December 31 of such year as long as they are actually paid in January of the
following year.
 
    The Trust intends to make regular quarterly cash distributions to its
shareholders based upon a quarterly distribution of $0.125 per Common Share
(equivalent to the cash distributions currently being paid on the Common Stock).
On an annualized basis, this would be $0.50 per Common Share (or an annual
distribution rate of approximately 5% based on the last trade price of the
Common Stock on NASDAQ on February 3, 1998).
 
    Future distributions by the Trust will be at the discretion of the Board of
Trustees and will depend on the actual funds from operations of the Trust, its
financial condition, capital requirements, the annual distribution requirements
under the REIT provisions of the Code (see "Federal Income Tax
Considerations--Taxation of the Trust--Annual Distribution Requirements") and
such other factors as the Board of Trustees deems relevant. See "Risk
Factors--Possible Changes in Policies Without Shareholder Approval; No
Limitation on Debt."
 
                  POLICIES WITH RESPECT TO CERTAIN ACTIVITIES
 
    The following is a description of certain investment, financing and other
policies of the Trust. These policies have been adopted by the Board of Trustees
and may be amended or revised from time to time without the approval of the
Trust's shareholders, except that changes in certain policies with respect to
conflicts of interest must be consistent with legal requirements.
 
INVESTMENT POLICIES
 
    If the Reformation is approved, the Trust will own the net retail properties
directly but intends to conduct all of its other investment activities through
the Operating Partnership and its subsidiaries and other affiliates and joint
ventures in which the Operating Partnership or a subsidiary may be a partner.
The Trust's investment objectives are to provide quarterly cash distributions
and achieve long-term capital appreciation through increases in the value of the
Trust's portfolio of properties and its operations. For a discussion of the
Trust's properties, see "Properties." The Trust's policies are to (i) purchase
income-producing commercial properties primarily for long-term capital
appreciation and rental growth and (ii) expand and improve its current
properties or other properties purchased or sell such properties, in whole or in
part, when circumstances warrant. To a lesser extent, the Trust intends to grow
through the
 
                                       54
<PAGE>
selective development, redevelopment and construction of commercial properties.
The Trust does not intend to expand its existing investments in net leased
retail properties and, to the extent appropriate opportunities arise, it may
contribute some or all of these properties to the Operating Partnership in
exchange for additional Units or sell or exchange some or all of these
properties and reinvest any net cash proceeds in suburban office properties.
 
    Equity investments may be subject to existing mortgage financing and other
indebtedness or to such financing or indebtedness as may be incurred in
connection with acquiring or refinancing such equity investments. Debt service
with respect to such financing or indebtedness will have a priority over any
distributions with respect to the Common Shares. Investments are also subject to
the Trust's policy not to be treated as an investment company under the
Investment Company Act of 1940.
 
    The Trust expects to pursue its investment objectives primarily through the
direct ownership by the Operating Partnership of its current properties (other
than those currently held by the Properties Partnerships) and other properties
to be acquired in the future. The Trust currently intends to invest primarily in
existing improved properties but may, if market conditions warrant, invest in
development projects as well. The Trust intends to concentrate on acquiring,
owning and operating suburban office properties, and future investment or
development activities will not be limited to any geographic area or product
type or to a specified percentage of the Trust's assets. While the Trust intends
to seek diversity in its investments in terms of property locations, size and
market, the Trust does not have any limit on the amount or percentage of its
assets that may be invested in any one property or any one geographic area. The
Trust intends to engage in such future investment and development activities in
a manner which is consistent with the maintenance of its status as a REIT for
federal income tax purposes.
 
    While the Trust's current portfolio consists of, and the Trust's business
objectives emphasize, equity investments in suburban office properties, the
Trust may, in the discretion of the Board of Trustees, invest in mortgages and
deeds of trust, consistent with the Trust's continued qualification as a REIT
for federal income tax purposes, including participating or convertible
mortgages if the Trust concludes that it may benefit from the cash flow or any
appreciation in value of the property secured by such mortgages. Investments in
real estate mortgages run the risk that one or more borrowers may default under
such mortgages and that the collateral securing such mortgages may not be
sufficient to enable the Trust to recoup its full investment.
 
    Subject to the limitations on ownership of certain types of assets and the
gross income tests imposed by the Code, the Trust also may invest in the
securities of other REITs, other entities engaged in real estate activities or
other issuers, including for the purpose of exercising control over such
entities. See "Federal Income Tax Considerations--Taxation of the Trust--Asset
Tests" and "--Taxation of the Trust--Gross Income Tests." The Trust may enter
into joint ventures or partnerships for the purpose of obtaining an equity
interest in a particular property in accordance with the Trust's investment
policies. Such investments may permit the Trust to own interests in larger
assets without unduly restricting diversification and, therefore, add
flexibility in structuring its portfolio. The Trust will not enter into a joint
venture or partnership to make an investment that would not otherwise meet its
investment policies.
 
FINANCING POLICIES
 
    In conjunction with its strategy to acquire additional suburban office
properties, management has developed a two-phase capital strategy. The Company
intends that the first phase would be a rapid growth period, during which the
Trust plans to emphasize the issuance of Units to facilitate entity and
portfolio acquisitions, and to utilize higher levels of debt than is typically
employed by public REITs in order to accelerate growth in FFO per share. During
the second phase, the Trust's mature growth period, it plans to gradually reduce
its debt as a percentage of total market capitalization. To accomplish this, the
Trust plans to issue a significant amount of its Common Shares, as well as
Preferred Shares and unsecured debt. The effect of this approach, in the long
term, should be a level of debt as a percentage of total capitalization
 
                                       55
<PAGE>
more in line with a typical REIT structure while continuing to grow FFO per
share. The Declaration of Trust and the Maryland Bylaws, however, do not limit
the amount or percentage of indebtedness that the Trust may incur, and the Trust
may from time to time modify its debt policy in light of current economic
conditions, relative costs of debt and equity capital, the market values of its
properties, general conditions in the market for debt and equity securities,
fluctuations in the market price of its Common Shares, growth and acquisition
opportunities and other factors. Any increase in the Trust's level of
indebtedness results in an increased risk of default on its obligations and a
related increase in debt service requirements that could adversely affect the
financial condition and results of operations of the Trust and the Trust's
ability to make distributions to shareholders. The Trust will consider a number
of factors in making decisions regarding the incurrence of debt such as the
purchase price of properties to be acquired with debt financing, the estimated
market value of properties upon refinancing and the ability of particular
properties and the Trust as a whole to generate sufficient cash flow to cover
expected debt service. See "Risk Factors--Possible Changes in Policies Without
Shareholder Approval; No Limitation on Debt."
 
    The Trust has not established any limit on the number or amount of mortgages
that may be placed on any single property or on its portfolio as a whole.
 
    To the extent that the Board of Trustees decides to obtain additional
capital, the Trust may raise such capital through additional equity offerings
(including offerings of senior securities), debt financings or retention of cash
available for distribution (subject to provisions in the Code concerning
taxability of undistributed REIT income), or a combination of these methods. As
long as the Operating Partnership is in existence, the net proceeds of the sale
of Common Shares by the Trust will be transferred to the Operating Partnership
in exchange for that number of Partnership Units in the Operating Partnership
equal to the number of Common Shares sold by the Trust. The Trust presently
anticipates that any additional borrowings would be made through the Operating
Partnership, although the Trust may incur indebtedness directly and loan the
proceeds to the Operating Partnership. Borrowings may be unsecured or may be
secured by any or all of the assets of the Trust, the Operating Partnership or
any existing or new property owning partnership and may have full or limited
recourse to all or any portion of the assets of the Trust, the Operating
Partnership or any existing or new property owning partnership. Indebtedness
incurred by the Trust may be in the form of bank borrowings, purchase money
obligations to sellers of properties, publicly or privately placed debt
instruments or financing from institutional investors or other lenders. The
proceeds from any borrowings by the Trust may be used for working capital, to
refinance existing indebtedness or to finance acquisitions, expansions or the
development of new properties, and for the payment of distributions. See
"Federal Income Tax Considerations."
 
CONFLICT OF INTEREST POLICIES
 
    The Trust has adopted certain policies that are intended to minimize
potential conflicts of interest. The Board of Trustees also is subject to
certain provisions of Maryland law that are designed to eliminate or minimize
certain potential conflicts of interest. However, there can be no assurance that
these policies will be successful in eliminating the influence of such
conflicts, and if they are not successful, decisions could be made that might
fail to reflect fully the interests of all shareholders. See "Risk
Factors--Conflicts of Interest."
 
    DECLARATION OF TRUST AND MARYLAND BYLAW PROVISIONS.  The Declaration of
Trust includes a provision generally permitting the Trust to enter into an
agreement or transaction with any person, including any Trustee, employee or
agent of the Trust. The Operating Partnership Agreement provides that neither
the Trust nor any of its affiliates (including its officers and Trustees) may
sell, transfer or convey any property to, or purchase any property from, the
Operating Partnership except on terms competitive with those that may be
obtained in the marketplace from unaffiliated persons.
 
    THE OPERATING PARTNERSHIP.  The Operating Partnership Agreement gives the
Trust, in its capacity as General Partner, full, complete and exclusive
discretion in managing and controlling the business of the
 
                                       56
<PAGE>
Operating Partnership and in making all decisions affecting the business and
assets of the Operating Partnership. Pursuant to the Operating Partnership
Agreement, the Limited Partners have agreed that the Trust is acting on behalf
of the Operating Partnership and the Trust's shareholders generally and, in its
capacity as General Partner, although owing fiduciary duties to all partners, in
the event of a conflict of interest between the Limited Partners and the Trust's
shareholders, the General Partner shall discharge its fiduciary obligations to
the Limited Partners by acting in the best interests of the Trust's
shareholders. In addition, the General Partner is not responsible for any
misconduct or negligence on the part of its agents, provided that such agents
were appointed in good faith. See "Operating Partnership Agreement."
 
    PROVISIONS OF MARYLAND LAW.  Under the MGCL, a contract or transaction
between a corporation and any of its directors or between a corporation and any
other corporation, firm or other entity in which any of its directors is a
director or has a material financial interest is not void or voidable solely
because of (a) the common directorship or interest, (b) the presence of the
director at the meeting of the board of directors or a committee of the board of
directors that authorizes or approves or ratifies the contract or transaction or
(c) the counting of the vote of the director for the authorization, approval or
ratification of the contract or transaction if (i) after disclosure of the
interest, the transaction is authorized, approved or ratified by the affirmative
vote of a majority of the disinterested directors, or by the affirmative vote of
a majority of the votes cast by shareholders entitled to vote other than the
votes of shares owned of record or beneficially by the interested director or
such corporation, firm or other entity, or (ii) the transaction is fair and
reasonable to the corporation. Under the Maryland By-laws, these provisions
apply to the Trust and the Trustees.
 
    POLICIES WITH RESPECT TO OTHER ACTIVITIES.  The Trust may, but does not
presently intend to, make investments other than as previously described. The
Trust has authority to offer its Common Shares, other shares of beneficial
interest or other securities for cash or in exchange for property and to
repurchase or otherwise reacquire its shares or any other securities and may
engage in such activities in the future. The Trust has not issued Common Shares,
interests or any other securities to date, except in connection with the
formation of the Trust. The Trust has no outstanding loans to other entities or
persons, including its officers and Trustees. The Trust has not engaged in
trading, underwriting or agency distribution or sale of securities of other
issuers, nor has the Trust invested in the securities of other issuers other
than the Operating Partnership for the purpose of exercising control and
currently does not intend to do so. The Trust makes and intends to continue to
make investments in such a way that it will not be treated as an investment
company under the Investment Company Act of 1940. The Trust's policies with
respect to such activities may be reviewed and modified or amended from time to
time by the Board of Trustees without approval of the Trust's shareholders.
 
    At all times, the Trust intends to make investments in such a manner
consistent with the requirements of the Code for the Trust to qualify as a REIT
unless, because of changing circumstances or changes in the Code (or in Treasury
Regulations), the Board of Trustees determines that it is no longer in the best
interests of the Trust to quality as a REIT.
 
WORKING CAPITAL RESERVES
 
    The Trust intends to maintain working capital reserves in amounts that the
Board of Trustees determines to be adequate to meet normal contingencies in
connection with the operation of the Trust's business and investments.
 
                                       57
<PAGE>
                        OPERATING PARTNERSHIP AGREEMENT
 
GENERAL
 
    Substantially all of the Trust's assets (other than its interest in the
retail properties) will be held by, and its operations will be conducted
through, the Operating Partnership. The Trust holds Partnership Units
representing an 18.86% partnership interest in the Operating Partnership (after
giving effect to the Retained Interests) and will control the Operating
Partnership in its capacity as the sole general partner. Subject to the Trust's
right to receive the Excess Allocations through December 31, 2000, the Trust's
interest in the Operating Partnership will entitle it to share in quarterly cash
distributions from, and in the profits and losses of, the Operating Partnership
in proportion to the Trust's percentage ownership of the Operating Partnership;
provided, however, that the Trust as General Partner will be allocated all
losses in excess of partner capital accounts. See "Certain Transactions--The
Transactions." The Limited Partners will own the remaining 81.14% economic
interest in the Operating Partnership (after giving effect to the Retained
Interests) through their ownership of Partnership Units and Preferred Units.
Under the Operating Partnership Agreement no Partnership Units or Preferred
Units may be transferred by a Limited Partner without the consent of the General
Partner and no such transfer may be made if such transfer would (i) result in
the Operating Partnership being terminated for federal income tax purposes or
treated as an association taxable as a corporation, (ii) be effectuated through
an "established securities market" or a "secondary market (or the substantial
equivalent thereof)" within the meaning of Section 7704 of the Code, (iii)
violate the provisions of applicable securities laws or (iv) violate the terms
of any law, rule, regulation or commitment binding on the Operating Partnership,
among others. The transferee will only be admitted as a Limited Partner by
furnishing certain requested instruments or documents to the Trust in its
capacity as General Partner. In addition, with the consent of the General
Partner, Partnership Units and Preferred Units may be transferred to certain
family members or entities controlled by or comprised of such family members.
 
    The net proceeds of any subsequent issuance of Common Shares are anticipated
to be contributed to the Operating Partnership in exchange for an equivalent
number of Partnership Units.
 
    As the general partner of the Operating Partnership, the Trust will have the
exclusive power under the Operating Partnership Agreement to manage and conduct
the business of the Operating Partnership. The Board of Trustees will direct the
affairs of the Operating Partnership. The Operating Partnership will be
responsible for, and pay when due, its share of all administrative and operating
expenses of its properties. The General Partner of the Operating Partnership may
have fiduciary duties to the Limited Partners, the discharge of which may
conflict with interests of the Trust shareholders. Pursuant to the Operating
Partnership Agreement, however, the Limited Partners have acknowledged that the
Trust is acting both on behalf of the Trust's shareholders and, in its capacity
as General Partner, on behalf of the Limited Partners. The Limited Partners have
agreed that the Trust will discharge its fiduciary duties to the Limited
Partners by acting in the best interests of the Trust's shareholders.
 
    The following summary of the Operating Partnership Agreement, including the
descriptions of certain provisions set forth elsewhere in this Proxy
Statement/Prospectus, is qualified in its entirety by reference to the Operating
Partnership Agreement, which is filed as an exhibit to the Registration
Statement of which this Proxy Statement/Prospectus is a part.
 
MANAGEMENT
 
    The Operating Partnership has been organized as a Delaware limited
partnership pursuant to the terms of the Operating Partnership Agreement. The
Trust, as the sole general partner of the Operating Partnership, will generally
have full, exclusive and complete discretion in managing and controlling the
Operating Partnership. The Limited Partners of the Operating Partnership will
have no authority to transact business for, or to participate in the management
activities or decisions of, the Operating Partnership, except as provided in the
Operating Partnership Agreement and as provided by applicable
 
                                       58
<PAGE>
law. However, the General Partner may not perform any act that would subject a
Limited Partner to liability as a general partner in any jurisdiction or any
other liability except as provided in the Operating Partnership Agreement or
under the laws of the State of Delaware. In addition, no amendments may be made
to the Operating Partnership Agreement that would alter a partner's amount of,
or right to, distributions, modify the redemption rights discussed below or
terminate the Operating Partnership without the consent of each partner
adversely affected thereby.
 
CONVERSION AND REDEMPTION
 
    Preferred Units may be converted on or after October 1, 1999 into
Partnership Units of the Operating Partnership on the basis of 3.5714
Partnership Units for each Preferred Unit being converted plus an amount in cash
equal to the accrued Priority Return Amount (as defined in the Operating
Partnership Agreement) in respect of such Preferred Units.
 
    Subject to compliance with the Operating Partnership Agreement, beginning on
September 1, 1998, each Limited Partner has the right to require the Operating
Partnership to redeem all or a portion of the Partnership Units held by such
Limited Partner. The Operating Partnership (or the Trust as its General Partner)
has the right, in its sole discretion, to deliver to such redeeming Limited
Partner for each Partnership Unit either one Common Share (subject to
anti-dilution adjustment) or a cash payment equal to the then fair market value
of such share (so adjusted) (based on the formula for determining such value set
forth in the Operating Partnership Agreement). Such rights of redemption and
conversion are immediately exercisable upon the happening of a Special Event (as
defined in the Operating Partnership Agreement). The redemption of Partnership
Units for Common Shares will have the effect of increasing the Trust's
percentage interest in the Operating Partnership.
 
    The receipt of Common Shares upon exercise of such right of redemption is
subject to compliance with a number of significant conditions precedent,
including compliance with the Declaration of Trust, all requirements under the
Code applicable to REITs, the MGCL or any other law then in effect applicable to
the Trust and any applicable rule or policy of any stock exchange or
self-regulatory organization.
 
LIABILITY AND INDEMNIFICATION
 
    The Operating Partnership Agreement provides the General Partner shall not
be liable to the Operating Partnership or any of the other partners for any act
or omission performed or omitted in good faith on behalf of the Operating
Partnership and in a manner reasonably believed to be (i) within the scope of
the authority granted by the Operating Partnership Agreement and (ii) in the
best interests of the Operating Partnership or the shareholders of the General
Partner. The Operating Partnership Agreement also provides that the Operating
Partnership shall indemnify the General Partner and each director, officer and
shareholder of the General Partner and each person (including any affiliate)
designated as an agent by the General Partner to the fullest extent permitted
under the Delaware Revised Uniform Limited Partnership Act from and against any
and all losses (including reasonable attorney's fees), and any other amounts
arising out of or in connection with any claim, relating to or resulting
(directly or indirectly) from the operations of the Operating Partnership, in
which such indemnified party becomes involved, or reasonably believes it may
become involved, as a result of its acting in the referred to capacity.
 
CAPITAL CONTRIBUTIONS
 
    When the Trust contributes additional capital to the Operating Partnership
from the proceeds of subsequent issuances of Common Shares (or Preferred
Shares), the Trust's interest in the Operating Partnership will be increased on
a proportionate basis based upon the number of Common Shares (or Preferred
Shares) issued to the extent the net proceeds from, or the property received in
consideration for, the issuance thereof are used to fund the contribution.
 
                                       59
<PAGE>
TAX MATTERS
 
    Pursuant to the Operating Partnership Agreement, the Trust will be the tax
matters partner of the Operating Partnership and, as such, will have authority
to make certain tax related decisions and tax elections under the Code on behalf
of the Operating Partnership.
 
OPERATIONS
 
    The Operating Partnership Agreement allows the Trust to operate the
Operating Partnership in a manner that will enable the Company to satisfy the
requirements for being classified as a REIT. The Operating Partnership Agreement
also requires the distribution of the cash available for distribution of the
Operating Partnership quarterly on a basis in accordance with the Operating
Partnership Agreement.
 
TERM
 
    The Operating Partnership will continue in full force and effect until
October 31, 2096 or until sooner dissolved upon (i) the withdrawal of the Trust
as a general partner (unless a majority the Limited Partners elect to continue
the Operating Partnership) or (ii) entry of a decree of judicial dissolution of
the Operating Partnership or (iii) the sale, exchange or other disposition of
all or substantially all of the assets of the Operating Partnership or (iv) the
affirmative vote of two-thirds in interest of Limited Partners.
 
                                       60
<PAGE>
                                   MANAGEMENT
 
EXECUTIVE OFFICERS AND TRUSTEES
 
    The persons who will serve as executive officers and directors of the Trust
are identified below. Except as noted below, each of the executive officers will
be a full time employee of the Trust or the Operating Partnership.
 
<TABLE>
<CAPTION>
NAME                                                   AGE                           OFFICE                           CLASS
- -------------------------------------------------      ---      -------------------------------------------------     -----
<S>                                                <C>          <C>                                                <C>
 
Jay H. Shidler...................................          51   Chairman of the Board of Trustees                      III
 
Clay W. Hamlin, III..............................          52   President, Chief Executive Officer and Trustee         III
 
Vernon R. Beck...................................          56   Vice President and Vice Chairman of the Board of        I
                                                                Trustees
 
Kenneth D. Wethe.................................          56   Trustee                                                II
 
Allen C. Gehrke..................................          63   Trustee                                                 I
 
William H. Walton................................          45   Trustee                                                II
 
Kenneth S. Sweet, Jr.............................          65   Trustee                                                III
 
Antony Bernheim..................................          37   Vice President, Chief Investment Officer
 
Thomas D. Cassel.................................          39   Vice President, Finance
 
David P. Hartsfield..............................          46   Vice President, Operations and Development
 
John Parsinen....................................          55   Secretary
 
James K. Davis, Jr...............................          37   Vice President, Acquisitions
 
Denise J. Liszewski..............................          41   Vice President, Administration
 
Stephen S. Fera..................................          31   Controller
</TABLE>
 
    JAY H. SHIDLER is Chairman of the Board of Trustees. Mr. Shidler is the
Founder and Managing Partner of The Shidler Group. A nationally acknowledged
expert in the field of real estate investment and finance, Mr. Shidler has over
25 years of experience in real estate investment and has been directly involved
in the acquisition and management of over 1,000 properties in 40 states and
Canada totalling over $4 billion in aggregate value. Mr. Shidler is a founder
and current Chairman of the Board of Directors of First Industrial Realty Trust,
Inc. (NYSE: FR) and is a founder and former director and Co-Chairman of TriNet
Corporate Realty Trust, Inc. (NYSE: TRI). Mr. Shidler is also founder and
Chairman of the Board of Directors of CGA Group, Ltd., a holding company whose
subsidiary is a AAA-rated financial guarantor based in Bermuda.
 
    Mr. Shidler serves on the boards of directors of several companies and is
active as a trustee of several charitable organizations, including The Shidler
Family Foundation. Mr. Shidler holds a bachelor's degree in Business
Administration from the University of Hawaii.
 
    CLAY W. HAMLIN, III is a Trustee and President and Chief Executive Officer
of the Trust. Mr. Hamlin joined The Shidler Group in May 1989, where he was
Managing Partner of The Shidler Group's Mid-Atlantic regional office and
acquired over 4 million square feet of commercial property with a value in
excess of $300 million. A resident of Philadelphia for over 30 years, Mr. Hamlin
has been active in the real estate business for 25 years. Mr. Hamlin is an
attorney, a CPA and holds an MBA from The Wharton
 
                                       61
<PAGE>
School of Business and an undergraduate degree from the University of
Pennsylvania. Mr. Hamlin served as a Lieutenant J.G. in the U.S. Navy, and is
active in many professional and charitable organizations. Mr. Hamlin is a
founding shareholder of both TriNet Corporate Realty Trust, Inc. and First
Industrial Realty Trust, Inc. His professional affiliations include the Urban
Land Institute, NAREIT, NAIOP, the American Institute of CPAs and the American
Bar Association.
 
    VERNON R. BECK is Vice Chairman of the Board of Trustees and is a Vice
President of the Trust. From 1988 to 1997, Mr. Beck served as President of the
Company and as President of Crown Advisors, Inc., the Company's former external
advisors. Since 1976, Mr. Beck has also been President of Vernon Beck &
Associates, Inc., a commercial mortgage banking and real estate development
firm, which has developed and financed numerous commercial real estate projects.
Mr. Beck is a former commercial loan officer with IDS Mortgage Corporation and
senior analyst with Northwestern National Life Insurance Company. Mr. Beck,
together with John Parsinen, owns all of the interests in Glacier Realty LLC.
See "Certain Transactions--Management Agreement."
 
    KENNETH D. WETHE is a Trustee of the Trust. Since 1990, Mr. Wethe has been
the owner and principal officer of Wethe & Associates, a Dallas-based firm
providing independent risk management, insurance and employee benefit services
to school districts and governmental agencies. Mr. Wethe's background includes
over 26 years experience in the group insurance and employee benefits area. He
is a certified public accountant and holds an MBA from Pepperdine University.
 
    ALLEN C. GEHRKE is a Trustee of the Trust. Prior to becoming a private
investor in 1995, Mr. Gehrke served for 35 years in various key positions at
Fleming Companies, Inc. As Senior Vice President of Corporate Development, Mr.
Gehrke's responsibilities included management of company physical assets, market
research, lease negotiations and real estate financing. Prior to his employment
with Fleming Companies, Mr. Gehrke spent seven years with Midwest Contractors
and L.A. Construction Co. of Milwaukee. Mr. Gehrke is a former director of
United Cerebral Palsy and several other community organizations.
 
    WILLIAM H. WALTON is a Trustee of the Trust. Mr. Walton is a Managing
Principal of Westbrook Partners, L.L.C. ("Westbrook") which he co-founded in
April of 1994. With offices in Dallas, New York, San Francisco and Florida,
Westbrook is a fully integrated real estate investment management company.
Westbrook is the sponsor of Westbrook Real Estate Fund and Westbrook Real Estate
Fund II, which together control approximately $4 billion of real estate assets
including investments in: real estate companies and securities; offices, retail
and industrial properties; apartments; hotels; and residential developments.
Prior to co-founding Westbrook, Mr. Walton was a Managing Director of Morgan
Stanley Realty. Mr. Walton holds an AB from Princeton University and an MBA from
Harvard Business School.
 
    KENNETH S. SWEET, JR. is a Trustee of the Trust. Mr. Sweet is the Managing
Director of Gordon Stuart Associates, Inc., which he founded in 1991. In 1971,
Mr. Sweet founded K.S. Sweet Associates which specialized in real estate and
venture capital investments. From 1957 to 1971, he served in increasingly
responsible positions at The Fidelity Mutual Life Insurance Company. Currently
the Managing General Partner of fifteen venture capital and real estate
partnership with assets of over $300 million, Mr. Sweet has over 37 years of
experience in real estate investment, management, development and venture
capital transactions.
 
    Mr. Sweet is active in community affairs and serves as a director, chairman
of the real estate committee and a member of the finance committee of the Main
Line Health and the Philadelphia Chapter of the Nature Conservancy and is on the
Advisory Committee of the Arthur Ashe Youth Tennis Center. Mr. Sweet holds a BA
degree from the Lafayette College and attended The Wharton School of Business.
 
    ANTONY BERNHEIM became Vice President, Chief Investment Officer, of the
Company in November 1997. Prior to joining the Company, Mr. Bernheim served as
Director of Acquisitions for Cali Realty Corp from September 1994 to May 1997.
As Cali's Director of Acquisitions, Mr. Bernheim oversaw the
 
                                       62
<PAGE>
acquisition program which transformed Cali from a $300 million company with 12
buildings to a 130 building, $2.5 billion company. Prior to his employment with
Cali, Mr. Bernheim had 13 years experience in the real estate industry,
including three years with Oppenheimer & Company from February 1991 to September
1994. Mr. Bernheim studied international finance at the University of Southern
California.
 
    THOMAS D. CASSEL has been Vice President, Finance of the Company since
October 1997. Mr. Cassel has over 18 years experience in real estate accounting,
finance, acquisitions and management. From 1995 until he joined the Company, Mr.
Cassel was Vice President and Chief Financial Officer of Delancey Investment
Group, Inc., a Philadelphia based real estate investment and management company
of commercial and residential properties. Prior to Delancey, he was a real
estate consulting manager for Arthur Andersen, LLP for four years and Kenneth
Leventhal & Co. for two years. As a consultant, he performed strategic planning,
capital markets, valuation and acquisition analyses for a variety of real estate
companies, including REITs. Mr. Cassel is a CPA and received his bachelor's
degree in Finance with a major in Accounting from the Wharton School at the
University of Pennsylvania. He is active in several professional and charitable
organizations.
 
    DAVID P. HARTSFIELD has been Vice President, Operations and Development of
the Company since October 1997. He joined The Shidler Group in November 1994, as
Vice President with responsibility for management, leasing and development for
The Shidler Group's Mid-Atlantic region. Prior to joining The Shidler Group, he
served as Vice President, Development for the Kevin F. Donohoe Companies, where
he was responsible for the development and management of office, hotel and
retail properties, including the 1.1 million square foot Curtis Center in
Philadelphia. Mr. Hartsfield has over 20 years of experience with commercial
real estate management, leasing and development. He has a degree in architecture
and an MBA from The University of Virginia and is a member of BOMA and other
professional organizations.
 
    JOHN PARSINEN. has over 31 years of experience in commercial real estate.
Mr. Parsinen has developed and owns various real estate projects. Mr. Parsinen
has been a senior attorney at Parsinen Kaplan Levy Rosberg & Gotlieb, P.A.
(Minneapolis, Minnesota) since it was formed in 1982. Mr. Parsinen owns 50% of
Guaranty Title, Inc. a Minneapolis-based real estate title insurance company.
Mr. Parsinen was a general partner of Earle Brown Commons Limited Partnership
II, which owned and operated an elderly housing facility in Brooklyn Center, MN.
In 1994, the limited partnership initiated a Chapter 11 bankruptcy
reorganization proceeding to restructure certain tax and debt obligations. The
bankruptcy was dismissed in 1995 and the project was sold. Mr. Parsinen,
together with Vernon Beck, owns all of the interests in Glacier Realty LLC. See
"Certain Transactions--Management Agreement."
 
    JAMES K. DAVIS, JR. has been Vice President, Acquisitions of the Company
since October 1997. He joined The Shidler Group in July 1994, as Vice President
with responsibility for acquisitions, financing, and leasing for The Shidler
Group's Mid-Atlantic region. Prior to joining The Shidler Group, Mr. Davis, was
Vice President, Acquisitions for Sandler Securities, Inc. He has 13 years of
real estate experience in acquisitions, financing, development and leasing. Mr.
Davis has an MBA from The Wharton School with a major in finance and an
undergraduate degree from The University of North Carolina. He is active in
several professional and charitable organizations.
 
    DENISE J. LISZEWSKI has been Vice President, Administration of the Company
and Assistant Secretary since October l997. She joined The Shidler Group in May
1989 serving in a number of capacities, where she was in charge of personnel,
administration and information systems. Ms. Liszewski has over 20 years of
business experience and has an undergraduate degree from Drexel University.
 
    STEPHEN S. FERA has been Controller of the Company since December 1997.
Prior to joining the Company, he spent seven years at Pennsylvania Real Estate
Investment Trust ("PREIT"), where he was promoted to the position of Controller.
At PREIT, he was responsible for managing the day-to-day accounting operations
of the REIT including all wholly-owned and joint venture properties. Prior to
PREIT, Mr. Fera was Assistant Controller at Calvanese Corporation, where he was
responsible for all corporate and construction accounting.
 
                                       63
<PAGE>
CERTAIN INFORMATION REGARDING THE BOARD OF TRUSTEES AND COMMITTEES
 
    THE BOARD OF TRUSTEES.  The business and affairs of the Trust will be
managed under the direction of the Board of Trustees. Pursuant to the terms of
the Declaration of Trust, the Trustees are divided into three classes. Class I
will hold office initially for a term expiring at the annual meeting of
shareholders to be held in 1999, Class II will hold office initially for a term
expiring at the annual meeting of shareholders to be held in 2000, and Class III
will hold office initially for a term expiring at the annual meeting of
shareholders to be held in 2001. At each annual meeting of the shareholders of
the Trust, the successors to the class of Trustees whose terms expire at the
meeting will be elected to hold office for a term continuing until the annual
meeting of shareholders held in the third year following the year of their
election and the election and qualification of their successors. See "Proposal
1--Reformation of Company--Comparison of Rights of Shareholders of the Company
and Shareholders of the Trust."
 
    COMMITTEES.  The Trust has a standing Audit Committee which currently
consists of Mr. Wethe (Chairman) and Mr. Gehrke and Mr. Shidler and a
Compensation Committee which currently consists of Mr. Sweet and Mr. Walton. The
Audit Committee reviews, recommends and reports to the Board of Trustees on (1)
independent auditors, (2) the quality and effectiveness of internal controls,
(3) engagement or discharge of the independent auditors, (4) professional
services provided by the independent auditors and (5) the review and approval of
major changes in the Trust's accounting principles and practices. The
Compensation Committee determines all executive compensation, recommends
specific option grants to key personnel and approves employment contracts.
 
    The Board of Trustees presently acts as its own Nominating Committee.
 
    COMPENSATION OF TRUSTEES.  Independent Trustees (Messrs. Gehrke, Sweet,
Walton and Wethe) will receive an annual fee of $15,000 from the date of the
Special Meeting. Trustees incurring travel expenses in connection with their
duties as trustees of the Trust are reimbursed in full. If the Plan is approved,
each Trustee is eligible to participate in the Plan. Management intends to
recommend that the Compensation Committee grant to each Trustee who is not an
employee of the Trust, upon initial election or appointment, an option to
purchase Common Shares in an amount to be determined, at the then fair market
value of the Common Shares, and grant such Trustee options to purchase an
additional Common Shares annually.
 
EXECUTIVE COMPENSATION
 
    Upon completion of the Transactions on October 14, 1997, the Company
converted from an externally advised to a self-administered REIT. Prior to
October 14, 1997, no individual officer of the Company was paid any cash or
other compensation. The following table sets forth the compensation paid from
October 14, 1997 to December 31, 1997 and current base annual compensation for
each of the executive officers of the Company.
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                            PRINCIPAL                   1997 ACTUAL  BASE ANNUAL
NAME                                                         POSITION                     SALARY        SALARY
- ------------------------------------------  ------------------------------------------  -----------  ------------
<S>                                         <C>                                         <C>          <C>
 
Clay W. Hamlin, III.......................  President, Chief Executive Officer           $  18,000    $   90,000
 
Antony Bernheim...........................  Vice President, Chief Investment Officer        --           125,000
 
Thomas D. Cassel..........................  Vice President, Finance                         22,038        90,000
 
David Hartsfield..........................  Vice President, Operations and Development      16,000        80,000
 
James K. Davis Jr.........................  Vice President                                  13,000        65,000
</TABLE>
 
                                       64
<PAGE>
    None of these officers received options in connection with their service to
the Company during the year ended December 31, 1997. In addition, none of these
officers contributed to any 401(k) plan.
 
    In addition to cash compensation in the form of base annual salary, the
Company anticipates that it will have a cash bonus incentive plan pursuant to
which cash bonuses may be awarded to executive officers and other key employees
based on attainment of specified personal and corporate objectives. It is
anticipated that the amounts of such bonuses will be determined by the Board
based upon a recommendation of the Compensation Committee.
 
EMPLOYMENT AGREEMENT
 
    Mr. Hamlin has entered into an employment agreement with the Company. The
agreement is for a continuous and self-renewing term of two years unless
terminated by either party. The agreement provides for base annual compensation
in the amount set forth above and incentive compensation to be determined by the
Board, upon a recommendation of the Compensation Committee. The base annual
compensation may be increased in subsequent years by action of the Compensation
Committee. The employment agreement provides for certain severance payments in
the event of disability or termination by the Company without cause or by Mr.
Hamlin based upon constructive termination. The agreement also provides for
certain payments to be made to Mr. Hamlin in the event of a Change in Control
(as defined in the agreement). Mr. Hamlin is required under the terms of his
employment agreement to devote his full business time to the affairs of the
Company. The agreement also prohibits Mr. Hamlin from engaging, directly or
indirectly, during the term of his employment and for a period thereafter, in
activities that compete with those of the Company.
 
EXISTING PLAN
 
    Since 1993, the Company has maintained the Existing Plan. A total of 75,000
shares of Common Stock are reserved for issuance under the Existing Plan. Each
director of the Company is eligible to participate in the Existing Plan. The
Existing Plan provides that each director will receive, upon initial election or
appointment, an option to purchase 2,500 shares of Common Stock at the then fair
market value of the Common Stock. The Existing Plan also provides for the grant
of an option to purchase an additional 2,500 shares of the Common Stock upon
each director's re-election to the Board. The options become exercisable in full
one year after date of grant and expire ten years from the date of grant.
Following the adoption of the Plan, the Trust will assume the Existing Plan but
does not intend to issue additional options thereunder. See "Proposal
2--Adoption of the Plan."
 
                                       65
<PAGE>
                  SECURITY OWNERSHIP OF MANAGEMENT AND OTHERS
 
THE COMPANY
 
    The following table contains certain information as of January 14, 1998,
regarding the beneficial ownership of the Common Stock by (i) each person known
by the Company to own beneficially more than 5% of the Common Stock, (ii) each
current director and executive officer of the Company and (iii) the current
directors and executive officers as a group, and as to the percentage of the
outstanding shares held by them on such date. Any shares which are subject to an
option or a warrant exercisable within 60 days are reflected in the following
table and are deemed to be outstanding for the purpose of computing the
percentage of Common Stock owned by the option or warrant holder but are not
deemed to be outstanding for the purpose of computing the percentage of Common
Stock owned by any other person. Unless otherwise noted, each person identified
below possesses sole voting and investment power with respect to such shares.
 
<TABLE>
<CAPTION>
                                                                                     SHARES
                                                                                   BENEFICIALLY
                                                                                    OWNED(1)    PERCENT OF CLASS
                                                                                   -----------  -----------------
<S>                                                                                <C>          <C>
Clay W. Hamlin, III..............................................................     300,000           13.22%
Jay H. Shidler...................................................................     300,000           13.22
Vernon R. Beck...................................................................     149,293(  (3)          6.55
John Parsinen....................................................................     151,965(  (4)          6.67
Allen C. Gehrke..................................................................       5,250(5)         *
Kenneth S. Sweet, Jr.............................................................      10,000(1)         *
William H Walton.................................................................      --               *
Kenneth D. Wethe.................................................................      10,224(3)         *
Anthony P. Bernheim..............................................................       7,500           *
Thomas D. Cassel.................................................................         660           *
All Directors and ExecutiveOfficers as a Group (10 persons)......................     934,892(6)         40.58%
</TABLE>
 
- ------------------------
 
*   Represents less than one percent.
 
(1) Shares Beneficially Owned by a person are determined in accordance with the
    definition of "beneficial ownership" as set forth in the regulations of the
    Commission and, accordingly, may include securities owned by or for, among
    others, the spouse, children or certain other relatives of such person, as
    well as other shares as to which the person has or shares voting or
    investment power or has the option or right to acquire Common Stock within
    60 days.
 
(2) Shares are held by Enterprise Nautical, Inc., of which Mr. Beck is the sole
    owner.
 
(3) Includes 10,000 shares of Common Stock each issuable upon exercise of
    presently exercisable options.
 
(4) Includes 3,000 shares owned by Mr. Parsinen's wife.
 
(5) Includes 5,000 shares of Common Stock issuable upon exercise of presently
    exercisable options.
 
(6) Includes 35,000 shares of Common Stock issuable upon exercise of presently
    exercisable options.
 
                                       66
<PAGE>
THE OPERATING PARTNERSHIP
 
    The following table sets forth certain information as of December 31, 1997
regarding the ownership of Partnership Units and Preferred Units (before giving
effect to any contribution of Retained Interests):
 
<TABLE>
<CAPTION>
                                                                                   PERCENTAGE        PREFERRED
                                                                 COMMON UNITS       INTEREST           UNITS
                                                                --------------  -----------------  --------------
<S>                                                             <C>             <C>                <C>
GENERAL PARTNER
The Company...................................................                         20.6946%
LIMITED PARTNERS AND PREFERRED LIMITED PARTNERS
Mr. Shidler...................................................          2,600           0.0897           126,079
Shidler Equities, L.P.(1).....................................        582,103          20.0773           457,826
Mr. Hamlin....................................................          5,235            .1805           115,334
LBCW Limited Partnership(2)...................................        875,284          30.1894           663,808
CHLB Partnership(2)...........................................         63,243           2.1813            41,741
Robert L. Denton..............................................        129,549           4.4683            85,502
James K. Davis................................................         15,368            .5300            10,142
John E. deB. Blockey, Trustee of the John E. deB. Blockey
  Living Trust dated 9/12/88..................................         89,549           3.0886            59,102
Henry D. Bullock..............................................         34,718           1.1975            22,914
Frederick K. Ito..............................................         17,359           0.5987            11,457
LGR Investment Fund, Ltd......................................         80,030           2.7603            52,820
Tiger South Brunswick, L.L.C..................................          2,875            .0992             1,898
Westbrook Real Estate Fund I, L.P.............................        336,121          11.5931           221,840
Westbrook Real Estate Co. InvestmentPartnership I, L.P........         33,299           1.1485            21,977
Denise J. Liszewski...........................................         10,227           0.3527             6,750
Samuel Tang...................................................          6,818           0.2352             4,500
David P. Hartsfield...........................................          9,091           0.3136             6,000
Lawrence J. Taff..............................................          4,091           0.1411             2,700
Kimberly F. Aquino............................................          1,750           0.0604             1,155
                                                                --------------        --------     --------------
                                                                    2,899,310         100.0000%        1,913,545
                                                                --------------        --------     --------------
                                                                --------------        --------     --------------
</TABLE>
 
- ------------------------
 
(1) A limited partnership controlled by Jay H. Shidler and his wife, Wallette
    Shidler.
 
(2) A family partnership controlled by Mr. Hamlin and his wife, Lynn B. Hamlin,
    as the sole general partners.
 
REGISTRATION RIGHTS
 
    The Company has granted to the holders of the Partnership Units and the
Preferred Units certain registration rights. No later than August 1, 1998, the
Company is obligated to file a shelf registration statement with respect to the
shares of Common Stock issuable upon conversion or redemption of the Units (the
"Registerable Securities"). The Company is also required, at the demand of
holders of 6% or more of the Registerable Securities, to register such holders'
Registerable Securities, subject to the right to defer the filing of the
necessary registration statement for a period not to exceed 90 days under
certain limited circumstances. This right to demand registration may be
exercised not more than three times. In addition, the Company has granted to
holders of Registrable Securities certain "piggy-back" rights. The Company has
agreed to indemnify the holders of Registrable Securities against certain
liabilities, including liabilities under the Securities Act. The Company will
pay all fees associated with these registrations, other than underwriting
discounts and commissions. In connection with the Reformation, the Trust will
assume these obligations with respect to registering Common Shares issuable upon
conversion or redemption of the Units.
 
                                       67
<PAGE>
                              CERTAIN TRANSACTIONS
 
THE TRANSACTIONS
 
    On October 14, 1997, the Company completed the Transactions pursuant to the
Formation Agreement. Although the Transactions involved a number of properties
and partnerships and were effected by a series of intermediate steps, the
Transactions were negotiated and effected as a unitary transaction and, in
effect, constituted the acquisition by the Company of an interest in the
Operating Partnership formed to acquire a portfolio of ten properties
representing the Mid-Atlantic suburban office operations of The Shidler Group, a
national real estate firm.
 
    Pursuant to the Transactions, the Company became the sole General Partner of
the Operating Partnership, and the Operating Partnership acquired all of the
limited partnership interests in limited partnerships holding the Shidler
Acquisition Properties (collectively, the "Properties Partnerships") except for
an 11% limited partnership interest in Blue Bell Investment Company, L.P.
retained by Shidler Equities, L.P., a limited partnership in effect controlled
by Mr. Shidler, Chairman of the Board, and his wife, Wallette Shidler, and 11%
limited partnership interests in each of ComCourt Investors L.P. and 6385 Flank
Drive, L.P. retained by Mr. Hamlin, the President, Chief Executive Officer and a
director of the Company (collectively, the "Retained Interests"). Immediately
prior to the Acquisition, Holdings was admitted as the sole general partner of
each of the Properties Partnerships, holding a .1% interest in each of them. The
Company has a 20.6946% percentage interest (before giving effect to the
contribution of the Retained Interests) in the Operating Partnership. In
addition, until December 31, 2000, a portion of the Profits (as defined in the
Operating Partnership Agreement) for each fiscal year is to be allocated 19.8%
to the Company as the General Partner and 80.2% to all partners (including the
Company as the General Partner but not the holders of Preferred Units).
 
    The Retained Interests are required to be contributed to the Operating
Partnership in November 2000 in consideration for the issuance to them of an
aggregate of 282,508 Partnership Units and 186,455 Preferred Units.
 
    Immediately prior to the Acquisition, each of the Properties Partnerships
jointly and severally entered into a $100 million principal amount mortgage
financing with Bankers Trust Company pursuant to a Senior Secured Credit
Agreement dated as of October 14, 1997 (the "Property Financing"). See
"Description of Property Financing."
 
    For the purposes of the Acquisition, the Properties Partnerships (including
the Retained Interests) were treated as having a value of $170 million (which
includes the $100 million of indebtedness represented by the Property
Financing). For purposes of determining the consideration to be given in respect
of the acquisition by the Operating Partnership of limited partnership interests
in the Properties Partnerships, Partnership Units were issued (and will be
issued in November 2000 for Retained Interests) at the rate of one Partnership
Unit for every $5.50 in exchange value and Preferred Units were issued (and will
be issued in November 2000 for Retained Interests) at a rate of one Preferred
Unit for every $25.00 in exchange value.
 
    The aggregate consideration issued in the Transactions by the Company and
the Operating Partnership on October 14, 1997 to the former general and limited
partners of the Properties Partnerships consisted of (x) 600,000 shares of
Common Stock (issued at a price of $5.50 per share); (y) an aggregate of
2,899,310 Partnership Units (including 600,000 issued to the Company in
consideration for limited partnership interests in the Properties Partnerships
acquired by it for 600,000 shares of Common Stock and subsequently contributed
by it to the Operating Partnership); and (z) 1,913,545 Preferred Units. The
nature and amount of consideration given and received by the Company in the
Transactions was based on its judgment as to the fair market value of the
Shidler Acquisition Properties and the shares of Common Stock at the time the
Formation Agreement was negotiated.
 
    Pursuant to the Transactions, Messrs. Shidler and Hamlin each acquired
300,000 shares of Common Stock in exchange for partnership interests in various
of the Properties Partnerships. The Common Stock
 
                                       68
<PAGE>
issued to Mr. Shidler and Mr. Hamlin represents, in the aggregate, approximately
26% of the outstanding Common Stock immediately following the Transactions.
Prior to the Transactions, the Properties Partnerships had in effect been
controlled by Mr. Shidler and Mr. Hamlin.
 
MANAGEMENT AGREEMENT
 
    Subject to the supervision of the Board, prior to October 14, 1997 the
business of the Company was managed by Crown Advisors, Inc. ("Crown"), which
provided investment advisory and administrative services to the Company pursuant
to an advisory agreement (the "Advisory Agreement"). Crown was owned by John
Parsinen and Vernon R. Beck, then officers and directors of the Company and
currently Secretary and Vice President and a director of the Company,
respectively. Under the Advisory Agreement, the Company paid Crown certain
attorney fees, expenses and performances fees, as defined in the Advisory
Agreement, and a 3% fee for each real estate acquisition or disposition.
 
    Concurrently with the closing of the Transactions and pursuant to the
Formation Agreement, the Advisory Agreement was terminated, and the Company
entered into a new management agreement (the "Management Agreement") with
Glacier Realty LLC, a Minnesota limited liability company ("Glacier"). All of
the interests in Glacier are owned by Vernon R. Beck, a Vice President and Vice
Chairman of the Board of the Trust, and John Parsinen, the Secretary of the
Trust. Under the Management Agreement, Glacier is responsible for the management
of the retail properties of the Company, subject to the approval and direction
of the Board. The Management Agreement provides that Glacier will receive an
annual fee of $250,000 plus a percentage of Average Invested Assets (as defined
in the Management Agreement) and will pay third party expenses associated with
owning the retail properties. In addition Glacier will receive a fee of 1% of
the purchase price or the sale price upon the acquisition or disposition by the
Company or any of its affiliates of any net-leased real estate assets. Under the
Management Agreement, this percentage is increased to 3% in the event that all
or substantially all of the net-leased real estate properties are disposed of.
The Management Agreement has a term of five years and is terminable thereafter
on 180 days prior written notice. In the event the Management Agreement is
terminated, including for non-renewal, a fee equal to 3% of the Invested Real
Estate Assets (defined in the Management Agreement to exclude the Company's
current net-leased real estate assets) would be due to Glacier. Crown and
Glacier received combined fees of $250,288 pursuant to the Advisory Agreement
and the Management Agreement in the year ended December 31, 1997.
 
OTHER
 
    Options to purchase an aggregate of 17,500 shares of Common Stock were
granted to the directors in the year ended December 31, 1997 under the Existing
Plan at a purchase price of $7.59 (options to purchase 2,500 Common Shares were
granted to each Messrs. Hamlin, Shidler, Sweet and Walton in October 1997) and
$5.25 (options to purchase 2,500 Common Shares were granted to each of Messrs.
Beck, Gehrke and Wethe in May 1997) in each case, pursuant to the terms of the
Existing Plan. These options expire ten years after their issue date.
 
    Parsinen Kaplan Levy Rosberg & Gotlieb, P.A. performed legal services for
the Company. The Company incurred legal fees to them of approximately $69,000 in
the year ended December 31, 1997. John Parsinen, Secretary of the Company, is an
officer, director and shareholder of the Parsinen Kaplan Levy Rosberg & Gotlieb,
P.A.
 
                       DESCRIPTION OF PROPERTY FINANCING
 
    Immediately prior to the Acquisition, each of the Properties Partnerships
jointly and severally entered into the $100 million Property Financing with
Bankers Trust Company. Approximately $96.1 million of the proceeds of the
Property Financing was used by entities other than the Company and the Operating
Partnership to refinance indebtedness of or secured by the assets of the
Properties Partnerships and to pay various costs in connection with the
Transactions. Approximately $3.9 million of the proceeds of the Property
Financing were contributed to the Operating Partnership in connection with the
Transactions.
 
                                       69
<PAGE>
The Operating Partnership used approximately $2.9 million of these funds to pay
various costs associated with the Transactions and retained approximately $1.0
million for working capital needs.
 
    The Operating Partnership is a joint and several obligor in respect of the
Property Financing. The Company and Holdings are not obligors with respect to
the Property Financing, but have pledged certain assets described in the
following sentence to secure repayment of the Property Financing. Substantially
all of the assets of the Properties Partnerships and the Operating Partnership's
and Holdings' interests in the Properties Partnerships and the Company's
interests in Holdings and the Operating Partnership have been pledged or
mortgaged to secure the Properties Partnerships' and the Operating Partnership's
joint and several obligations in respect of the Property Financing.
 
    The initial term of the Property Financing is three years with the right
given to the obligors to extend it, subject to the satisfaction of certain
conditions precedent thereto, for two successive one year extensions. Borrowings
under the Property Financing bear interest at the rate of 7.5% per annum. In the
event that the Property Financing is extended after the third anniversary or
following an event of default during the first three years, the borrowings under
the Property Financing will bear interest at a floating rate based on LIBOR plus
2.5%.
 
    The Property Financing contains, among other things, covenants restricting
the ability of the Operating Partnership to make distributions. The Property
Financing also contains covenants restricting the ability of each Properties
Partnership to incur indebtedness, create liens, make certain investments, enter
into transactions with affiliates and otherwise restrict activities. The
Property Financing also contains the following financial covenants binding upon
the Company and its subsidiaries: maintenance of consolidated net worth, a
minimum consolidated interest coverage ratio, a maximum consolidated unhedged
floating rate debt ratio and a maximum consolidated total indebtedness ratio.
Each Properties Partnership must also maintain a minimum property interest
coverage ratio and a minimum property hedged interest coverage ratio.
 
    Events of default under the Property Financing include, among other things,
default in the payment of principal or interest on borrowings outstanding under
the Property Financing, any payment default in respect of material amounts of
indebtedness of the Company or its subsidiaries, any non-payment default on such
indebtedness, any material breach of the covenants or representations and
warranties included in the Property Financing and related documents, the
institution of any bankruptcy proceedings and the failure of any security
agreement related to the Property Financing or lien granted thereunder to be
valid and enforceable. Upon the occurrence and continuance of an event of
default under the Property Financing, the lenders may declare the then
outstanding loans due and payable.
 
                       FEDERAL INCOME TAX CONSIDERATIONS
 
    The Company was organized in 1988 and elected to be taxed as a REIT
commencing with its taxable year ended on December 31, 1992. The Company
believes that it was organized and has operated in a manner that permits it to
satisfy the requirements for taxation as a REIT under the applicable provisions
of the Code, and the Trust intends to continue to operate in such a manner. No
assurance can be given, however, that such requirements have been or will
continue to be met. The following is a summary of the federal income tax
considerations for the Trust and its shareholders with respect to the treatment
of the Trust as a REIT.
 
    Based upon certain assumptions and representations described below, Cahill
Gordon & Reindel, special tax counsel to the Company and the Trust, is of the
opinion that, for federal income tax purposes, (i) the Company has properly
elected and otherwise qualified to be taxed as a REIT for the taxable years
beginning on and after January 1, 1992 and ending prior to January 1, 1998 and
(ii) the proposed method of operation as described in this Proxy
Statement/Prospectus and as represented by the Company will enable the Company
and the Trust to continue to satisfy the requirements for such qualification for
subsequent taxable years. See the discussion below under "--Taxation of the
Trust" and "--Share Ownership Tests," however, regarding the possible impact of
the Company's failure to make certain
 
                                       70
<PAGE>
demands of information from its shareholders, as required by Treasury
Regulations. The determination of REIT qualification is based on certain
assumptions relating to the organization and operation of the Company, the
Trust, the Operating Partnership and the Properties Partnerships, and is
conditioned upon certain representations made by the Company as to certain
factual matters relating to its and the Trust's organization and intended or
expected manner of operation. In addition, this determination is based on the
law existing and in effect on the date hereof (or, where applicable, as in
effect during earlier periods in question) and the Company's and the Trust's
qualification and taxation as a REIT will depend on compliance with such law and
as the same may hereafter be amended. The qualification and taxation as a REIT
will further depend upon the ability to meet, on a continuing basis through
actual operating results, asset composition, distribution levels and diversity
of share ownership, the various qualification tests imposed under the Code
discussed below. No assurance can be given that the Company and the Trust will
satisfy such tests on a continuing basis.
 
    In brief, a corporation that invests primarily in real estate can, if it
meets the REIT provisions of the Code described below, claim a tax deduction for
the dividends it pays to its shareholders. Such a corporation generally is not
taxed on its "REIT taxable income" to the extent such income is currently
distributed to shareholders, thereby substantially eliminating the "double
taxation" (i.e., at both the corporate and shareholder levels) that generally
results from an investment in a corporation. However, as discussed in greater
detail below, such an entity remains subject to tax in certain circumstances
even if it qualifies as a REIT. Further, if the entity were to fail to qualify
as a REIT in any year, it would not be able to deduct any portion of the
dividends it paid to its shareholders and would be subject to full federal
income taxation on its earnings, thereby significantly reducing or eliminating
the cash available for distribution to its shareholders. See "--Taxation of the
Trust-General" and "--Taxation of the Trust-- Failure to Qualify."
 
    The following summary is based on existing law, is not exhaustive of all
possible tax considerations and does not give a detailed discussion of any
state, local or foreign tax considerations, nor does it discuss all of the
aspects of federal income taxation that may be relevant to a prospective
shareholder in light of his or her particular circumstances or to certain types
of shareholders (including insurance companies, financial institutions and
broker-dealers) subject to special treatment under the federal income taxation
laws. Except as noted, this summary is intended to address the federal income
tax treatment applicable to the Trust and its shareholders following the
Mergers.
 
TAXATION OF THE TRUST
 
    GENERAL.  In any year in which the Trust qualifies as a REIT, in general it
will not be subject to federal income tax on that portion of its REIT taxable
income or capital gain which is distributed to shareholders. The Trust may,
however, be subject to tax at normal corporate rates upon any taxable income or
capital gains not distributed. Under recently enacted legislation, shareholders
are required to include their proportionate share of the REIT's undistributed
long-term capital gain in income but receive a credit for their share of any
taxes paid on such gain by the REIT.
 
    Notwithstanding its qualification as a REIT, the Trust also may be subject
to taxation in certain other circumstances. If the Trust should fail to satisfy
either the 75% or the 95% gross income test (each as discussed below), and
nonetheless maintains its qualification as a REIT because certain other
requirements are met, it will be subject to a 100% tax on the greater of the
amount by which the Trust fails either the 75% or the 95% test, multiplied by a
fraction intended to reflect the Trust's profitability. The Trust will also be
subject to a tax of 100% on net income from any "prohibited transaction" (as
described below), and if the Trust has (i) net income from the sale or other
disposition of "foreclosure property" which is held primarily for sale to
customers in the ordinary course of business or (ii) other non-qualifying income
from foreclosure property, it will be subject to tax on such income from
foreclosure property at the highest corporate rate. In addition, if the Trust
should fail to distribute during each calendar year at least the sum of (i) 85%
of its REIT ordinary income for such year, (ii) 95% of its REIT capital gain net
income for such year and (iii) any undistributed taxable income from prior
years, the Trust would be subject to a 4% excise
 
                                       71
<PAGE>
tax on the excess of such required distribution over the amounts actually
distributed. The Trust also may be subject to the corporate alternative minimum
tax, as well as to tax in certain situations not presently contemplated. The
Trust will use the calendar year both for federal income tax purposes, as is
required of a REIT, and for financial reporting purposes.
 
    In order to qualify as a REIT, the Trust must meet the following
requirements, among others:
 
    SHARE OWNERSHIP TESTS.  The Trust's shares of beneficial interest (which
term, in the case of the Trust, currently means the Common Shares) must be held
by a minimum of 100 persons for at least 335 days in each taxable year (or a
proportionate number of days in any short taxable year). In addition, at all
times during the second half of each taxable year, no more than 50% in value of
the outstanding shares of beneficial interest of the Trust may be owned,
directly or indirectly and including the effects of certain constructive
ownership rules, by five or fewer individuals, which for this purpose includes
certain tax-exempt entities. However, for purposes of this test, any shares of
beneficial interest held by a qualified domestic pension or other retirement
trust will be treated as held directly by its beneficiaries in proportion to
their actuarial interest in such trust rather than by such trust.
 
    In order to attempt to ensure compliance with the foregoing share ownership
tests, the Company has and the Trust will place certain restrictions on the
transfer of its shares of beneficial interest to prevent additional
concentration of stock ownership. Moreover, to evidence compliance with these
requirements, Treasury Regulations require the Trust to maintain records which
disclose the actual ownership of its outstanding shares of beneficial interest.
In fulfilling its obligations to maintain records, the Trust must and will
demand written statements each year from the record holders of designated
percentages of its shares of beneficial interest disclosing the actual owners of
such shares of beneficial interest (as prescribed by Treasury Regulations). A
list of those persons failing or refusing to comply with such demand must be
maintained as part of the Trust's records. A shareholder failing or refusing to
comply with the Trust's written demand must submit with his tax return a similar
statement disclosing the actual ownership of Trust shares of beneficial interest
and certain other information. In addition, the Trust's Declaration of Trust
provides restrictions regarding the transfer of its shares of beneficial
interest that are intended to assist the Trust in continuing to satisfy the
share ownership requirements. See "Proposal 1--Reformation of the
Company--Description of Shares of Beneficial Interest--Restrictions on
Transfer."
 
    The Company unintentionally made required demands for shareholder statements
later then the time permitted by the regulations for its taxable years 1994
through 1996 (and failed to make such demands for its taxable years 1992 and
1993, which are generally closed years for purposes of the assessment of federal
income tax). As a consequence, the Service may contend that the Company failed
to qualify as a REIT for some or all of such years. The Company, however,
believes that it has substantially complied with the purposes of the shareholder
demand regulation. At its own initiative, the Company requested that the Service
enter into a closing agreement with the Company whereby the Service would agree
not to treat the Company as failing to qualify as a REIT because of the
Company's failure strictly to comply with the shareholder demand regulation. The
Service has not yet advised the Company whether it will enter into such closing
agreement, although the Company has been advised that the Service has in some
cases agreed to enter into such agreements under similar circumstances. The
Service has given no indication that it intends to challenge the Company's
qualification as a REIT for a failure to make the shareholder demands. If such a
challenge were successfully made, the Company believes that any liability for
income taxes and interest for the taxable years 1994 through 1996 could be
material. If the Service were successful in challenging the Company's REIT
status for failure to satisfy the shareholder demand regulation, the Company's
qualification as a REIT for 1997 would depend on the Company's ability to prove
that its failure to make the shareholder demands was due to reasonable cause and
not due to willful neglect. Otherwise, the Company and the Trust could not elect
REIT status, potentially until 1999. The Company estimates that if it was unable
to elect REIT status until 1999, the Company's and the Trust's aggregate
liability for income taxes and interest for the years 1994 through 1996 would be
approximately $165,000
 
                                       72
<PAGE>
plus applicable interest. An additional tax liability could also fall due with
respect to tax years 1997 and 1998.
 
    ASSET TESTS.  At the close of each quarter of the Trust's taxable year, the
Trust must satisfy two tests relating to the nature of its assets (determined in
accordance with generally accepted accounting principles). First, at least 75%
of the value of the Trust's total assets must be represented by interests in
real property, interests in mortgages on real property, shares in other REITs,
cash, cash items, government securities and qualified temporary investments.
Second, although the remaining 25% of the Trust's assets generally may be
invested without restriction, securities in this class may not exceed (i) in the
case of securities of any one non-government issuer, 5% of the value of the
Trust's total assets (the "Value Test") or (ii) 10% of the outstanding voting
securities of any one such issuer (the "Voting Stock Test"). Where the Trust
invests in a partnership (such as the Operating Partnership), it will be deemed
to own a proportionate share of the partnership's assets, and the partnership
interest will not constitute a security for purposes of these tests. See "--Tax
Aspects of the Trust's Investments in Partnerships--General." Accordingly, the
Trust's investment in the Properties through its interests in the Operating
Partnership and the Properties Partnerships (jointly referred to herein as the
"Partnerships") will constitute an investment in qualified assets for purposes
of the 75% asset test.
 
    GROSS INCOME TESTS.  There are two separate percentage tests relating to the
sources of the Trust's gross income which must be satisfied for each taxable
year. For purposes of these tests, where the Trust invests in a partnership, the
Trust will be treated as receiving its share of the income and loss of the
partnership, and the gross income of the partnership will retain the same
character in the hands of the Trust as it has in the hands of the partnership.
See "--Tax Aspects of the Trust's Investments in Partnerships--General" below.
The two tests are as follows:
 
    THE 75% TEST.  At least 75% of the Trust's gross income for the taxable year
must be "qualifying income." Qualifying income generally includes: (i) rents
from real property (except as modified below); (ii) interest on obligations
secured by mortgages on, or interests in, real property; (iii) gains from the
sale or other disposition of interests in real property and real estate
mortgages, other than gain from property held primarily for sale to customers in
the ordinary course of the Trust's trade or business ("dealer property"); (iv)
dividends or other distributions on shares in other REITs, as well as gain from
the sale of such shares; (v) abatements and refunds of real property taxes; (vi)
income from the operation, and gain from the sale, of property acquired at or in
lieu of a foreclosure of the mortgage secured by such property ("foreclosure
property"); and (vii) commitment fees received for agreeing to make loans
secured by mortgages on real property or to purchase or lease real property.
 
    Rents received from a tenant will not, however, qualify as rents from real
property in satisfying the 75% gross income test (or the 95% gross income test
described below) if the Trust, or an owner of 10% or more of the Trust, directly
or constructively owns 10% or more of such tenant. In addition, if rent
attributable to personal property leased in connection with a lease of real
property is greater that 15% of the total rent received under the lease, then
the portion of rent attributable to such personal property will not qualify as
rents from real property. Moreover, an amount received or accrued will not
qualify as rents from real property (or as interest income) for purposes of the
75% and 95% gross income tests if it is based in whole or in part on the income
or profits of any person, although an amount received or accrued generally will
not be excluded from "rents from real property" solely by reason of being based
on a fixed percentage or percentages of receipts or sales. Finally, for rents
received to qualify as rents from real property for purposes of the 75% and 95%
gross income tests, the Trust generally must not operate or manage the property
or furnish or render services to customers, other than through an "independent
contractor" from whom the Trust derives no income, except that the "independent
contractor" requirement does not apply to the extent that the services provided
by the Trust are "usually or customarily rendered" in connection with the rental
of space for occupancy only, and are not otherwise considered "rendered to the
occupant for his convenience." In addition, under recently enacted legislation,
beginning with its taxable year ending December 31, 1998, the Trust may directly
perform a DE MINIMIS amount of non-customary services. See "--Other Tax
Considerations--The Taxpayer Relief Act" below.
 
                                       73
<PAGE>
    The Trust intends to monitor its operations in the context of these
standards so as to satisfy the 75% and 95% gross income tests. The Operating
Partnership will provide certain services at the properties of the Properties
Partnerships and possibly at any newly acquired properties of the Partnerships.
The Trust believes that for purposes of the 75% and 95% gross income tests the
services provided at such properties and any other services and amenities
provided by the Operating Partnership or its agents with respect to such
properties will be of the type usually or customarily rendered in connection
with the rental of space for occupancy only and not rendered to the occupants of
such properties. The Trust intends that services that cannot be provided
directly by the Operating Partnership or other agents will be performed by
independent contractors.
 
    THE 95% TEST.  In addition to deriving 75% of its gross income from the
sources listed above, at least 95% of the Trust's gross income for the taxable
year must be derived from the above-described qualifying income or from
dividends, interest, or gains from the sale or other disposition of stock or
other securities that are not dealer property. Dividends and interest on any
obligations not collateralized by an interest in real property are included for
purposes of the 95% test, but not for purposes of the 75% test. The Trust
intends to monitor closely its non-qualifying income and anticipates that
non-qualifying income from its other activities will not result in the Trust
failing to satisfy either the 75% or 95% gross income test.
 
    For purposes of determining whether the Trust complies with the 75% and the
95% gross income tests, gross income does not include income from prohibited
transactions. A "prohibited transaction" is a sale of dealer property (excluding
foreclosure property); however, a sale of property will not be a prohibited
transaction if such property is held for at least four years and certain other
requirements (relating to the number of properties sold in a year, their tax
bases, and the cost of improvements made thereto) are satisfied. See "--Taxation
of the Trust--General" and "--Tax Aspects of the Trust's Investments in
Partnerships--Sale of the Properties."
 
    The Trust believes that, for purposes of both the 75% and the 95% gross
income test, its investment in properties through the Partnerships will in major
part give rise to qualifying income in the form of rents, and that gains on
sales of its properties generally will also constitute qualifying income.
 
    Even if the Trust fails to satisfy one or both of the 75% and 95% gross
income tests for any taxable year, it may still qualify as a REIT for such year
if it is entitled to relief under certain provisions of the Code. These relief
provisions will generally be available if: (i) the Trust's failure to comply is
due to reasonable cause and not to willful neglect; (ii) the Trust reports the
nature and amount of each item of its income included in the tests on a schedule
attached to its tax return; and (iii) any incorrect information on this schedule
is not due to fraud with intent to evade tax. If these relief provisions apply,
however, the Trust will nonetheless be subject to a 100% tax on the greater of
the amount by which it fails either the 75% or 95% gross income test, multiplied
by a fraction intended to reflect the Trust's profitability.
 
    ANNUAL DISTRIBUTION REQUIREMENTS.  In order to qualify as a REIT, the Trust
is required to distribute dividends to its shareholders each year in an amount
at least equal to (A) the sum of (i) 95% of the Trust's REIT taxable income
(computed without regard to the dividends received deduction and the Trust's net
capital gain) and (ii) 95% of the net income (after tax), if any, for
foreclosure property, minus (B) the sum of certain items of non-cash income.
Such distributions must be paid in the taxable year to which they relate, or in
the following taxable year if declared before the Trust timely files its tax
return for such year and if paid on or before the first regular dividend payment
after the declaration. To the extent that the Trust does not distribute all of
its net capital gain or distributes at least 95%, but less than 100%, of its
REIT taxable income, as adjusted, it will be subject to tax on the undistributed
amount at regular capital gain or ordinary corporate tax rates, as the case may
be.
 
    The Trust intends to make timely distributions sufficient to satisfy the
annual distribution requirements described in the first sentence of the
preceding paragraph. In this regard, the Partnership Agreement authorizes the
Trust in its capacity as general partner to take such steps as may be necessary
to cause the Operating Partnership to distribute to its partners an amount
sufficient to permit the Trust to meet the
 
                                       74
<PAGE>
distribution requirements. It is possible that the Trust may not have sufficient
cash or other liquid assets to meet the 95% distribution requirement, due to
timing differences between the actual receipt of income and actual payment of
expenses on the one hand, and the inclusion of such income and deduction of such
expense in computing the Trust's REIT taxable income on the other hand; or for
other reasons. The Trust will monitor closely the relationship between its REIT
taxable income and cash flow and, if necessary, intends to borrow funds (or
cause the Operating Partnership or other affiliates to borrow funds) in order to
satisfy the distribution requirement. However, there can be no assurance that
such borrowing would be available at such time.
 
    If the Trust fails to meet the 95% distribution requirement as a result of
an adjustment to the Trust's tax return by the Service, the Trust may
retroactively cure the failure by paying a "deficiency dividend" (plus
applicable penalties and interest) within a specified period.
 
    FAILURE TO QUALIFY.  If the Trust fails to qualify for taxation as a REIT in
any taxable year and the relief provisions do not apply, the Trust will be
subject to tax (including any applicable alternative minimum tax) on its taxable
income at regular corporate rates. Distributions to shareholders in any year in
which the Trust fails to qualify as a REIT will not be deductible by the Trust,
nor generally will they be required to be made under the Code. In such event, to
the extent of current and accumulated earnings and profits, all distributions to
shareholders will be taxable as ordinary income, and subject to certain
limitations in the Code, corporate distributees may be eligible for the
dividends received deduction. Unless entitled to relief under specific statutory
provisions, the Trust also will be disqualified from re-electing taxation as a
REIT for the four taxable years following the year during which qualification
was lost.
 
TAX ASPECTS OF THE TRUST'S INVESTMENTS IN PARTNERSHIPS
 
    GENERAL.  The Trust will hold a partnership interest in the Operating
Partnership. In general, a partnership is a "pass-through" entity which is not
subject to federal income tax. Rather, partners are allocated their
proportionate shares of the items of income, gain, loss, deduction and credit of
a partnership, and are potentially subject to tax thereon, without regard to
whether a partner received a distribution from the partnership. The Trust will
include its proportionate share of the foregoing partnership items for purposes
of the various REIT gross income tests and in the computation of its REIT
taxable income. See "--Taxation of the Trust--General" and "--Gross Income
Tests."
 
    Each partner's share of a partnership's tax attributes is determined in
accordance with the partnership agreement, although the allocations will be
adjusted for tax purposes if they do not comply with the technical provisions of
Code Section 704(b) and the regulations thereunder. The Partnerships'
allocations of tax attributes are intended to comply with these provisions.
Notwithstanding these allocation provisions, for purposes of complying with the
gross income and asset tests discussed above, the Trust will be deemed to own
its proportionate share of each of the assets of the Partnerships and will be
deemed to have received a share of the income of the Partnerships based on its
capital interest in the Partnerships.
 
    Accordingly, any resultant increase in the Trust's REIT taxable income from
its interest in the Partnerships (whether or not a corresponding cash
distribution is also received from the Partnerships) will increase its
distribution requirements (see "--Taxation of the Trust--Annual Distribution
Requirements"), but will not be subject to federal income tax in the hands of
the Trust provided that an amount equal to such income is distributed by the
Trust to its shareholders. Moreover, for purposes of the REIT asset tests (see
"--Taxation of the Trust--Asset Tests"), the Trust will include its
proportionate share of assets held by the Partnerships.
 
    TAX ALLOCATIONS WITH RESPECT TO THE PROPERTIES.  Pursuant to Section 704(c)
of the Code, income, gain, loss and deductions attributable to appreciated or
depreciated property that is contributed to a partnership in exchange for an
interest in the partnership must be allocated in a manner such that the
contributing partner is charged with, or benefits from, respectively, the
unrealized gain or unrealized loss associated with the property at the time of
the contribution. The amount of such unrealized gain or unrealized loss is
 
                                       75
<PAGE>
generally equal to the difference between the fair market value of the
contributed property at the time of contribution, and the adjusted tax basis of
such property at the time of contribution (a "Book-Tax Difference"). Such
allocations are solely for federal income tax purposes and do not affect the
book capital amounts or other economic arrangements among the partners.
Consequently, the Partnership Agreement requires certain allocations to be made
in a manner consistent with Section 704(c) of the Code.
 
    Treasury Regulations under Section 704(c) provide partnerships with a choice
of several methods of accounting for Book-Tax Differences. The Partnerships and
the Trust have not yet determined which of the alternative methods of accounting
for Book-Tax Differences will be elected, and accordingly, such determination
could have differing timing and other effects on the Trust.
 
    The Trust's properties acquired in taxable transactions will in general have
a tax basis equal to their fair market value. Section 704(c) of the Code will
not apply in such cases.
 
    SALE OF THE PROPERTIES.  The Trust's share of any gain realized by a
Partnership on the sale of any "dealer property" generally will be treated as
income from a prohibited transaction that is subject to a 100% penalty tax. See
"--Taxation of the Trust--General" and "--Gross Income Tests--The 95% Test."
Under existing law, whether property is dealer property is a question of fact
that depends on all the facts and circumstances with respect to the particular
transaction. The Company has held and the Partnerships intend to hold their
properties for investment with a view to long-term appreciation, to engage in
the business of acquiring, owning, operating and developing its properties and
other commercial properties, and to make such occasional sales of properties,
whether presently held or acquired subsequent to the date hereof, as are
consistent with the Trust's investment objectives. Based upon the Trust's
investment objectives, the Trust believes that overall, its current properties
should not be considered dealer property and that the amount of income from
prohibited transactions, if any, will not be material.
 
TAXATION OF SHAREHOLDERS
 
    TAXATION OF TAXABLE DOMESTIC SHAREHOLDERS.  As long as the Trust qualifies
as a REIT, distributions made to the Trust's taxable domestic shareholders out
of current or accumulated earnings and profits generally will be taxed to such
shareholders as ordinary dividend income, except that, subject to the discussion
below regarding the new tax rates contained in the Taxpayer Relief Act of 1997
(the "Taxpayer Relief Act"), distributions of net capital gain designated by the
Trust as capital gain dividends will be taxed to such shareholders as long-term
capital gain (to the extent they do not exceed the Trust's actual net capital
gain for the fiscal year) without regard to the period for which the shareholder
has held its shares of beneficial interest in the Trust. However, corporate
shareholders may be required to treat up to 20% of capital gain dividends as
ordinary income. To the extent that the Trust makes distributions in excess of
current and accumulated earnings and profits, such distributions will be treated
first as a tax-free return of capital to the shareholder, reducing the tax basis
of such shareholder's Common Shares by the amount of such excess distribution
(but not below zero), with distributions in excess of the shareholder's tax
basis being taxed as capital gain (if the Common Shares are held by the
shareholder as a capital asset). See "Distribution Policy." In addition, any
dividend declared by the Trust in October, November or December of any year that
is payable to a shareholder of record on a specific date in any such month shall
be treated as both paid by the Trust and received by the shareholder on December
31 of such year, provided that the dividend is actually paid by the Trust during
January of the following calendar year. Shareholders may not include in their
individual income tax returns any net operating losses of the Trust. Federal
income tax rules may also require that certain minimum tax adjustments and
preferences be apportioned to the Trust's shareholders.
 
    The Trust is permitted under the Code to elect to retain and pay income tax
on its net capital gain for any taxable year. However, if the Trust so elects, a
shareholder must include in income such shareholder's proportionate share of the
Trust's undistributed capital gain for the taxable year, and will be deemed to
have paid such shareholder's proportionate share of the income tax paid by the
Trust with respect to such
 
                                       76
<PAGE>
undistributed capital gain. Such tax would be credited against the shareholder's
tax liability and subject to normal refund procedures. In addition, each
shareholder's basis in such shareholder's Common Shares would be increased by
the amount of undistributed capital gain (less the tax paid by the Trust)
included in the shareholder's income.
 
    The Taxpayer Relief Act alters the taxation of capital gain income for
individuals (and for certain trusts and estates). Gain from the sale or exchange
of certain investments held for more than 18 months will be taxed at a maximum
rate of 20%. Gain from the sale or exchange of such investments held for 18
months or less, but for more than one year, will be taxed at a maximum rate of
28%. The Taxpayer Relief Act also provides a maximum rate of 25% for
"unrecaptured section 1250 gain" recognized on the sale or exchange of certain
real estate assets, introduces special rules for "qualified 5-year gain," and
makes certain other changes to prior law. On November 10, 1997, the Service
issued Notice 97-64, which provides generally that the Trust may classify
portions of its designated capital gain dividend as (i) a 20% rate gain
distribution (which would be taxed as capital gain in the 20% group), (ii) an
unrecaptured Section 1250 gain distribution (which would be taxed as capital
gain in the 25% group) or (iii) a 28% rate gain distribution (which would be
taxed as capital gain in the 28% group). If no designation is made, the entire
designated capital gain dividend will be treated as a 28% rate capital gain
distribution. Notice 97-64 provides that a REIT must determine the maximum
amounts that it may designate as 20% and 25% rate capital gain dividends by
performing the computation required by the Code as if the REIT were an
individual whose ordinary income was subject to a marginal tax rate of at least
28%.
 
    In general, any loss upon a sale or exchange of Common Shares by a
shareholder who has held such Common Shares for six months or less (after
applying certain holding period rules) will be treated as a long-term capital
loss, to the extent of prior distributions required to be treated by such
shareholders as long-term capital gains.
 
    BACKUP WITHHOLDING.  The Trust will report to its domestic shareholders and
to the Service the amount of distributions paid for each calendar year, and the
amount of tax withheld, if any, with respect thereto. Under the backup
withholding rules, a shareholder may be subject to backup withholding at a rate
of 31% with respect to distributions paid unless such shareholder (i) is a
corporation or comes with certain other exempt categories and, when required,
demonstrates this fact or (ii) provides a taxpayer identification number,
certifies as to no loss of exemption from backup withholding, and otherwise
complies with applicable requirements of the backup withholding rules. A
shareholder that does not provide the Trust with its correct taxpayer
identification number may also be subject to penalties imposed by the Service.
Any amount paid as backup withholding is available as a credit against the
shareholder's income tax liability. In addition, the Trust may be required to
withhold a portion of capital gain distributions made to any shareholders who
fail to certify their non-foreign status to the Trust. See "--Taxation of the
Shareholders--Taxation of Foreign Shareholders" below.
 
    TAXATION OF TAX-EXEMPT SHAREHOLDERS.  The Service has issued a revenue
ruling in which it held that amounts distributed by a REIT to a tax-exempt
employees' pension trust do not constitute unrelated business taxable income
("UBTI"). Subject to the discussion below regarding a "pension-held REIT," based
upon such ruling, distributions by the Trust to a shareholder that is a
tax-exempt entity should not constitute UBTI, provided that the tax-exempt
entity has not financed the acquisition of its shares with "acquisition
indebtedness" within the meaning of the Code, that the shares are not otherwise
used in an unrelated trade or business of the tax-exempt entity, and that the
Trust, consistent with its present intent, does not hold a residual interest in
a real estate mortgage investment conduit ("REMIC") that is an entity or
arrangement that satisfies the standards set forth in Section 860D of the Code.
 
    If any pension or other retirement trust that qualifies under Section 401(a)
of the Code (a "qualified pension trust") holds more than 10% by value of the
interests in a "pension-held REIT" at any time during a taxable year, a portion
of the dividends paid to the qualified pension trust by such REIT may constitute
UBTI. For these purposes, a "pension-held REIT" is defined as a REIT (i) which
would not have qualified
 
                                       77
<PAGE>
as a REIT but for the provisions of the Code which look through such a qualified
pension trust in determining ownership of shares of the REIT and (ii) as to
which at least one qualified pension trust holds more than 25% by value of the
interests of such REIT or one or more qualified pension trusts (each owning more
than a 10% interest by value in the REIT) hold in the aggregate more than 50% by
value of the interests in such REIT.
 
    TAXATION OF FOREIGN SHAREHOLDERS.  The rules governing United States federal
income taxation of nonresident alien individuals, foreign corporations, foreign
partnerships and other foreign shareholders (collectively, "Non-U.S.
Shareholders") are highly complex and the following is only a brief summary of
such rules. Prospective Non-U.S. Shareholders should consult with their own tax
advisors to determine the impact of federal, state and local income tax laws
with regard to an investment in Common Shares, including any reporting
requirements. The Trust will qualify as a "domestically-controlled REIT" so long
as less than 50% in value of its shares of beneficial interest are held by
foreign persons (i.e., non-resident aliens, and foreign corporations,
partnerships, trusts and estates). The Trust currently anticipates that it will
qualify as a domestically-controlled REIT. Under these circumstances, gain from
the sale of Common Shares by a foreign person should not be subject to United
States taxation, unless such gain is effectively connected with such person's
United States trade or business or, in the case of an individual foreign person,
such person is present within the United States for more than 182 days during
the taxable year. However, notwithstanding the Trust's current expectation that
the Trust will qualify as a domestically-controlled REIT, because the Common
Shares will be publicly traded no assurance can be given that the Trust will
continue to so qualify.
 
    Distributions of cash generated by the Trust's real estate operations (but
not by the sale or exchange of properties) that are paid to foreign persons
generally will be subject to United States withholding tax at a rate of 30%,
unless (i) an applicable tax treaty reduces that tax and the foreign shareholder
files with the Trust the required form evidencing such lower rate, or (ii) the
foreign shareholder files an IRS Form 4224 with the Trust claiming that the
distribution is "effectively connected" income.
 
    Distributions of proceeds attributable to the sale or exchange of United
States real property interests by the Trust are subject to income and
withholding taxes pursuant to the Foreign Investment in Real Property Tax Act of
1980 ("FIRPTA"), and may also be subject to branch profits tax in the hands of a
shareholder that is a foreign corporation if it is not entitled to treaty relief
or exemption. The Trust is required by applicable Treasury Regulations to
withhold 35% of any distribution to a foreign person that could be designated by
the Trust as a capital gain dividend. This amount is creditable against the
foreign shareholder's FIRPTA tax liability.
 
    The federal income taxation of foreign persons is a highly complex matter
that may be affected by other considerations. Accordingly, foreign investors in
the Trust should consult their own tax advisor regarding the income and
withholding tax considerations with respect to their investment in the Trust.
 
OTHER TAX CONSIDERATIONS
 
    THE TAXPAYER RELIEF ACT.  The Taxpayer Relief Act modifies many of the
provisions relating to the requirements for qualification as, and the taxation
of, a REIT. Among other things, the Taxpayer Relief Act (i) replaces the rule
that disqualifies a REIT for any year in which the REIT fails to comply with
Treasury Regulations that are intended to enable the REIT to ascertain its
ownership with a prescribed penalty for failing to do so; (ii) permits a REIT to
render a DE MINIMIS amount of impermissible services to tenants, or in
connection with the management of property, and still treat amounts received
with respect to that property as rents from real property; (iii) permits a REIT
to elect to retain and pay income tax on net long-term capital gains; (iv)
repeals a rule that required that less than 30% of a REIT's gross income be
derived from gain from the sale or other disposition of stock or securities held
for less than one year, certain real property held for less than four years, and
property that is sold or disposed of in a prohibited transaction; (v) lengthens
the original grace period for foreclosure property from two years after the REIT
 
                                       78
<PAGE>
acquired the property to a period ending on the last day of the third full
taxable year following the taxable year in which the property was acquired; (vi)
treats income from all hedges that reduce the interest rate risk of REIT
liabilities, not just interest rate swaps and caps, as qualifying income under
the 95% gross income test; and (vii) permits any corporation wholly owned by a
REIT to be treated as a qualified subsidiary, regardless of whether the
corporation has always been owned by a REIT. The changes are effective for
taxable years beginning after the date of enactment, and thus will apply to the
Trust's taxable year ending December 31, 1998.
 
    POSSIBLE LEGISLATIVE OR OTHER ACTIONS AFFECTING TAX
CONSEQUENCES.  Shareholders should recognize that the present federal income tax
treatment of an investment in the Trust may be modified by legislative, judicial
or administrative action at any time and that any such action may affect
investments and commitments previously made. The rules dealing with federal
income taxation are constantly in review by persons involved in the legislative
process and by the Service and the Treasury Department, resulting in revisions
of regulations and revised interpretations of established concepts as well as
statutory changes. No assurance can be given as to the form or content
(including with respect to effective dates) of any tax legislation which may be
enacted. Revisions in federal tax laws and interpretations thereof can adversely
affect the tax consequences of an investment in the Trust.
 
    STATE AND LOCAL TAXES.  The Trust and the Partnerships may be subject to
state or local taxation, and the Trust's shareholders may be subject to state or
local taxes in various jurisdictions, including those in which they transact
business or reside. The state and local tax treatment of the Trust and its
shareholders may not conform to the federal income tax consequences discussed
above. Consequently, prospective shareholders should consult their own tax
advisors regarding the effect of state and local tax laws on an investment in
Common Shares. See "Risk Factors--Tax Risks--Other Tax Liabilities."
 
    EACH SHAREHOLDER IS ADVISED TO CONSULT WITH SUCH SHAREHOLDER'S TAX ADVISOR
REGARDING THE SPECIFIC TAX CONSEQUENCES TO SUCH SHAREHOLDER OF THE OWNERSHIP AND
SALE OF COMMON SHARES IN AN ENTITY ELECTING TO BE TAXED AS A REAL ESTATE
INVESTMENT TRUST, INCLUDING THE FEDERAL, STATE, LOCAL, FOREIGN AND OTHER TAX
CONSEQUENCES OF SUCH, OWNERSHIP, SALE AND ELECTION AND OF POTENTIAL CHANGES IN
APPLICABLE TAX LAWS.
 
                                       79
<PAGE>
                                 PROPOSAL 2 --
                              ADOPTION OF THE PLAN
 
DESCRIPTION OF THE PLAN
 
    Prior to the Reformation, the Board of Trustees will adopt, and the sole
shareholder of the Trust will approve, the Plan for the purpose of attracting,
retaining and motivating employees and directors of the Trust. The Plan
authorizes the issuance of up to ten percent of the Common Shares outstanding
from time to time, subject to adjustment on the event of certain
recapitalization or reorganization transactions. The Plan will be administered
by the Compensation Committee of the Board of Trustees or, with respect to
certain matters, its delegate. As used in this summary, the term "Administrator"
means the Compensation Committee or its delegate, as appropriate. Trustees, and
employees of the Trust, the Operating Partnership and other subsidiaries of the
Trust, and designated affiliates of the Trust will be eligible for selection by
the Administrator to participate in the Plan. The maximum number of Common
Shares with respect to which options may be granted during a calendar year to
any participant under the Plan will be 200,000 Common Shares, subject to
adjustment for certain recapitalization or reorganization transactions. No
awards may be granted under the Plan after the tenth anniversary of the Plan's
approval by the Shareholders.
 
    The Plan provides for the grant of (i) share options intended to qualify as
incentive stock options under Section 422 of the Code, (ii) share options not
intended to qualify as incentive stock options under Section 422 of the Code
("nonqualified stock options") and (iii) Dividend Equivalents (as defined in the
Plan) which may be granted alone or in conjunction with share options (each an
"Award"). The Administrator will determine the type and number of Awards
granted, the terms and conditions of any Award and adopt, amend, waive and
rescind the rules and regulations necessary to administer the Plan, among other
things. In connection with the grant of options under the Plan, the
Administrator will determine the option exercise price, the term of the option
and the time and method of exercising.
 
    An option granted under the Plan may be exercised for any number of whole
Common Shares less than the full number of Common Shares for which the option
could be exercised. Unless otherwise agreed by the Administrator, Awards will
not be transferable except by will or the laws of descent and distribution. A
holder of an option will have no rights as a shareholder with respect to Common
Shares subject to his or her option until the option is exercised. Any Common
Shares subject to options which are forfeited (or expire without exercise)
pursuant to the vesting requirement or other terms established at the time of
grant will again be available for grant under the Plan. Payment of the exercise
price of an option granted under the Plan may be made in cash, or, if permitted
by the Administrator, by exchanging Common Shares having a fair market value
equal to the option exercise price. Unless otherwise provided by the
Administrator, all outstanding Awards will become fully exercisable upon a
Change of Control.
 
BOARD RECOMMENDATION
 
    The Board has determined that it is in the best interests of the Trust and
the Shareholders to seek approval of the Plan. The Company believes that a
long-term incentive plan is important to the retention of its senior management
team, and also aligns the economic interests of its senior management team with
the economic interests of its shareholders.
 
VOTE REQUIRED
 
    Under Minnesota law, the adoption of the Plan requires the affirmative vote
of a majority of the shares of Common Stock, represented and entitled to vote,
at the Special Meeting. Abstentions and broker non-votes will not be counted as
either "for" or "against" the approval of the Plan.
 
    THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS A VOTE FOR THE APPROVAL OF THE
PLAN.
 
                                       80
<PAGE>
FEDERAL INCOME TAX CONSEQUENCES
 
    The following discussion summarizes the principal federal income tax
consequences of the Plan. This discussion is based on current provisions of the
Code, the Treasury Regulations promulgated thereunder, and administrative and
judicial interpretations thereof as in effect on the date hereof. The summary
does not address any foreign, state or local tax consequences of participation
in the Plan.
 
    STOCK OPTIONS.  In general, the grant of an option will not be a taxable
event to the recipient (the "Participant") and it will not result in a deduction
to the Company. The tax consequences associated with the exercise of an option
and the subsequent disposition of Common Shares acquired on the exercise of such
option depend on whether the option is an incentive stock option or a
nonqualified stock option.
 
    Upon the exercise of a nonqualified stock option, the Participant will
recognize ordinary taxable income equal to the excess of the fair market value
of the Common Shares received upon exercise over the exercise price. The Company
will generally be able to claim a deduction in an equivalent amount. Any gain or
loss upon a subsequent sale or exchange of the Common Shares will be capital
gain or loss. If the holding period for the shares is not more than one year,
the gain or loss will be short-term capital gain or loss. Short-term capital
gain is taxable at the same rates as ordinary income. If the holding period is
more than one year, the gain or loss will be long-term capital gain or loss. In
general, long-term capital gain is subject to lower maximum federal income tax
rates than ordinary income. Currently, the maximum rate for long-term capital
gain on assets held for more than eighteen months is generally 20%, and the
maximum rate on capital gain on assets held for more than one year but less than
eighteen months ("mid-term gain") is 28%.
 
    Generally, a Participant will not recognize ordinary taxable income at the
time of exercise of an incentive stock option and no deduction will be available
to the Company, provided the option is exercised while the Participant is an
employee or within three months following termination of employment (longer, in
the case of termination of employment by reason of disability or death). If an
incentive stock option granted under the Plan is exercised after these periods,
the exercise will be treated for federal income tax purposes as the exercise of
a nonqualified stock option. Also, an incentive stock option granted under the
Plan will be treated as a nonqualified stock option to the extent it (together
with any other incentive stock options granted under plans of the Company and
its subsidiaries) first becomes exercisable in any calendar year for Common
Shares having a fair market value, determined as of the date of grant, in excess
of $100,000.
 
    If Common Shares acquired upon exercise of an incentive stock option are
sold or exchanged more than one year after the date of exercise and more than
two years after the date of grant of the option, any gain or loss will be
long-term capital gain or loss, taxable as discussed above at either a maximum
rate of 20% or 28% depending on the holding period. If Common Shares acquired
upon exercise of an incentive stock option are disposed of prior to the
expiration of these one-year or two-year holding periods (a "Disqualifying
Disposition"), the Participant will recognize ordinary income at the time of
disposition, and the Company will generally be able to claim a deduction, in an
amount equal to the excess of the fair market value of the Common Shares at the
date of exercise over the exercise price. Any additional gain will be treated as
capital gain, long-term, mid-term or short-term, depending on how long the
shares of Common Stock have been held. Where Common Shares are sold or exchanged
in a Disqualifying Disposition (other than certain related party transactions)
for an amount less than their fair market value at the date of exercise, any
ordinary income recognized in connection with the Disqualifying Disposition will
be limited to the amount of gain, if any, recognized in the sale or exchange,
and any loss will be a long-term or short-term capital loss, depending on how
long the Common Shares have been held.
 
    Although the exercise of an incentive stock option as described above would
not produce ordinary taxable income to the Participant, it would result in an
increase in the Participant's alternative minimum taxable income and may result
in an alternative minimum tax liability.
 
                                       81
<PAGE>
    DIVIDEND EQUIVALENT RIGHTS.  With respect to dividend equivalent rights
under the Plan, generally, when a Participant receives payment with respect to
the dividend equivalent right, the amount of cash and the fair market value of
any other property received will be ordinary income to such Participant and will
be allowed as a deduction for federal income tax purposes to the Company.
 
    PAYMENT OF WITHHOLDING TAXES.  The Company may withhold, or require a
Participant to remit to the Company, an amount sufficient to satisfy any
federal, state or local withholding tax requirements associated with awards
under the Plan.
 
    SPECIAL RULES.  Special rules may apply to a Participant who is subject to
Section 16(b) of the Exchange Act as in effect from time to time (generally
directors, officers and 10% stockholders). Certain additional special rules
apply if the exercise price for an option is paid in shares previously owned by
the Participant rather than in cash.
 
    LIMITATION ON DEDUCTIBILITY.  Section 162(m) of the Code generally limits
the deductible amount of annual compensation paid (including, unless an
exception applies, compensation otherwise deductible in connection with awards
granted under the Plan) by a public company to a "covered employee" (the chief
executive officer and four other most highly compensated executive officers of
the Company) to no more than $1 million. The Company currently intends to
structure stock options granted under the Plan to comply with an exception to
nondeductibility under Section 162(m) of the Code.
 
                            INDEPENDENT ACCOUNTANTS
 
    The Board of Trustees has selected Coopers & Lybrand L.L.P. ("Coopers &
Lybrand") to serve as independent accountants for the Trust for the year ending
December 31, 1998. Coopers & Lybrand was appointed by the Board on October 31,
1997 to be independent certified public accountants for the Company, replacing
Lurie, Besikof, Lapidus & Co., LLP ("Lurie"). A representative of Coopers &
Lybrand is expected to be present at the Special Meeting, have the opportunity
to make a statement if he so desires, and will be available to respond to
appropriate questions.
 
                         SHAREHOLDER PROPOSALS FOR THE
                      1999 ANNUAL MEETING OF SHAREHOLDERS
 
    Any shareholder who wishes to present a proposal for action at the next
annual meeting of shareholders and who wishes to have it set forth in the proxy
statement and identified in the form of proxy prepared by the Company must
notify the Company in such manner so that such notice is received by the Company
by December 31, 1998. Any such proposal must be in the form required under the
rules and regulations promulgated by the Commission.
 
                                 OTHER MATTERS
 
    The Board knows of no other matters that are intended to be brought before
the Special Meeting. If other matters, of which the Board is not aware, are
presented for action, it is the intention of the proxies named in the enclosed
form of proxy to vote on such matters in their sole discretion.
 
                                 LEGAL MATTERS
 
    Certain legal matters in connection with the Common Shares being offered
hereby will be passed upon for the Trust by Cahill Gordon & Reindel (a
partnership including a professional corporation), New York, New York. Cahill
Gordon & Reindel will rely, without independent investigation, on Ballard Spahr
Andrews & Ingersoll, Baltimore, Maryland as to certain matters of Maryland law
and on Maun & Simon, PLC, Minneapolis, Minnesota as to certain matters of
Minnesota law.
 
                                       82
<PAGE>
                                    EXPERTS
 
    As previously announced, on October 31, 1997, Coopers & Lybrand L.L.P. was
appointed by the Board of Directors of the Company as the Company's independent
accountants for the year ending December 31, 1997. The Company is not aware of
any disagreements with Lurie during the Company's two most recent fiscal years
and through October 31, 1997 on any matters of accounting principles or
practices, financial statement disclosures, or auditing scope and procedures
which, if not resolved to the satisfaction of Lurie, would have caused Lurie to
make reference to the matters in their reports. Lurie has furnished to the
Commission a letter agreeing with this statement.
 
    The consolidated financial statements of the Company as of December 31, 1996
and 1995 and for each of the years in the three year period ended December 31,
1996 incorporated by reference in this Registration Statement have been
incorporated by reference herein in reliance on the report of Coopers & Lybrand
L.L.P., independent accountants, given on the authority of that firm as experts
in accounting and auditing.
 
    The consolidated financial statements of the Shidler Acquisition Properties
as of December 31, 1996 and 1995 and for each of the years in the three year
period ended December 31, 1996 incorporated by reference in this Registration
Statement have been incorporated by reference herein in reliance on the report
of Coopers & Lybrand L.L.P., independent accountants, given on the authority of
that firm as experts in accounting and auditing.
 
    The balance sheet of Corporate Office Properties Trust as of February 3,
1998 included in this Registration Statement has been included herein in
reliance on the report of Coopers & Lybrand L.L.P., independent accountants,
given on the authority of that firm as experts in accounting and auditing.
 
                                       83
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
<S>                                                                                     <C>
CORPORATE OFFICE PROPERTIES TRUST
Report of Independent Accountants.....................................................        F-2
Audited Financial Statements
  Balance Sheet at February 3, 1998...................................................        F-3
  Notes to Balance Sheet..............................................................        F-4
</TABLE>
 
                                      F-1
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
The Board of Trustees and Shareholder
  Corporate Office Properties Trust:
 
We have audited the accompanying balance sheet of Corporate Office Properties
Trust (Company) as of February 3, 1998. This balance sheet is the responsibility
of the Company's management. Our responsi-
bility is to express an opinion on this balance sheet based upon our audit.
 
We conducted our audit in accordance with generally accepted auditing standards.
Those standards require that we plan and perform the audit to obtain reasonable
assurance about whether the balance sheet is free of material misstatement. An
audit includes examining, on a test basis, evidence supporting the amounts and
disclosures in the balance sheet. An audit also includes assessing the
accounting principles used and significant estimates made by management, as well
as evaluating the overall balance sheet presentation. We believe that our audit
of the balance sheet provides a reasonable basis for our opinion.
 
In our opinion, the balance sheet referred to above presents fairly, in all
material respects, the financial position of Corporate Office Properties Trust
as of February 3, 1998, in conformity with generally accepted accounting
principles.
 
COOPERS & LYBRAND L.L.P.
2400 Eleven Penn Center
Philadelphia, Pennsylvania
February 4, 1998
 
                                      F-2
<PAGE>
                       CORPORATE OFFICE PROPERTIES TRUST
 
                                 BALANCE SHEET
 
                                FEBRUARY 3, 1998
 
                                     ASSETS
 
<TABLE>
<S>                                                                                    <C>
Cash.................................................................................  $     100
                                                                                       ---------
                                                                                       ---------
</TABLE>
 
                              SHAREHOLDER'S EQUITY
 
<TABLE>
<S>                                                                                    <C>
Preferred shares of beneficial interest, $.01 per share; 5,000,000 shares authorized;
  none issued or outstanding.........................................................
 
Common shares of beneficial interest, $.01 par value; 45,000,000 shares authorized; 1
  issued and outstanding.............................................................          0
 
Additional paid-in capital...........................................................        100
                                                                                       ---------
 
      Total shareholder's equity.....................................................       $100
                                                                                       ---------
                                                                                       ---------
</TABLE>
 
                   (See accompanying notes to balance sheet)
 
                                      F-3
<PAGE>
                       CORPORATE OFFICE PROPERTIES TRUST
 
                             NOTES TO BALANCE SHEET
 
1. ORGANIZATION:
 
    Corporate Office Properties Trust (the Company) was formed in the State of
Maryland as a real estate investment trust on January 22, 1998 and issued one
share to COPT, Inc. for a total consideration of $100. The Company has executed
an Agreement and Plan of Merger under which it will indirectly merge with
Corporate Office Properties Trust, Inc. (the Merger). The Company intends to
file a Form S-4 registration statement with Securities and Exchange Commission
in connection with the Merger.
 
    The Company has had no operations. The purposes for which the Company was
formed are to invest in and to acquire, hold, manage, administer, control and
dispose of property, as a real estate investment trust. Upon consummation of the
Merger, the Company intends to begin operations. The Company will have an
indirect interest in certain suburban office buildings and hold a number of
retail properties with related indebtedness.
 
2. FEDERAL INCOME TAXES:
 
    At the earliest possible date, the Company intends to qualify as a real
estate investment trust under the Internal Revenue Code of 1986, as amended.
Accordingly, upon such qualification it will not be subject to federal income
taxes on amounts distributed to shareholders provided it distributes at least 95
percent of its taxable income and meets certain other conditions. The Company
may, however, be subject to state or local taxation in various jurisdictions.
 
3. PLANNED TRANSACTIONS:
 
    The Company intends to consummate the Merger as soon as practicable
following approval of the Merger by the shareholders of Corporate Office
Properties Trust, Inc. There can be no assurance that the Merger will be
consummated.
 
4. EMPLOYEE BENEFIT PLANS AND RELATED MATTERS:
 
    The Company's Board of Trustees intends to adopt a long-term incentive plan
under which the Board of Trustees is authorized to grant common share awards,
and determine the form, payment, exercise provisions, and other terms thereof.
The Company intends to reserve 10% of common shares outstanding from time to
time for issuance under the incentive plan.
 
    The Company intends to enter into an employment agreement with its president
and chief executive officer. The agreement will have an initial term of three
years, subject to automatic renewal for subsequent two year terms, and will
cover matters including compensation, disability and termination. The agreement
will also contain provisions which are intended to limit the president from
competing with the Company throughout the term of the agreement and for a period
of two years thereafter.
 
    The Company will also enter into a noncompetition agreement with the
chairman of the board of trustees. The agreement will be in effect during the
period that he serves as chairman.
 
    There can be no assurance that the aforementioned actions will be completed
as intended.
 
                                      F-4
<PAGE>
                                                                      APPENDIX A
 
                          AGREEMENT AND PLAN OF MERGER
 
    THIS AGREEMENT AND PLAN OF MERGER (the "Agreement"), dated as of January 31,
1998, is by and among Corporate Office Properties Trust, Inc., a Minnesota
corporation (the "Company"), COPT, Inc., a Maryland corporation (the "Maryland
Company") and Corporate Office Properties Trust, a Maryland real estate
investment trust (the "Trust").
 
                                    RECITALS
 
    WHEREAS, the Boards of Directors of the Company and the Maryland Company and
the Board of Trustees of the Trust each have determined that it is in the best
interests of their respective shareholders to effect the Mergers (as hereinafter
defined) upon the terms and subject to the conditions set forth herein; and
 
    NOW, THEREFORE, in consideration of the premises, and of the
representations, warranties, covenants and agreements contained herein the
parties hereto adopt the plan of merger encompassed by this Agreement and agree
as follows:
 
                                   ARTICLE I
                      THE MERGERS; CLOSING; EFFECTIVE TIME
 
    1.1. THE COMPANY MERGER. Subject to the terms and conditions of this
Agreement, at the Effective Time (as defined in Section 1.4), the Company shall
be merged with and into the Maryland Company and the separate corporate
existence of the Company shall thereupon cease (the "Company Merger"). The
Maryland Company shall be the surviving entity in the Company Merger (sometimes
hereinafter referred to as the "Surviving Corporation") and shall continue to be
governed by the laws of the State of Maryland and the separate existence of the
Maryland Company with all its rights, privileges, immunities, powers and
franchises shall continue unaffected by the Company Merger.
 
    The Company Merger shall have the effects specified in the Minnesota
Business Corporation Act (the "MBCA") and the Maryland General Corporation Law
(the "MGCL").
 
    1.2. THE TRUST MERGER. Subject to the terms and conditions of this
Agreement, at the Effective Time (as defined in Section 1.4), the Surviving
Corporation shall be merged with and into the Trust and the separate corporate
existence of the Surviving Corporation shall thereupon cease (the "Trust Merger"
and, together with the Company Merger, the "Mergers"). The parties intend that
the Mergers qualify as a reorganization under Section 368(a)(1) of the Internal
Revenue Code of 1986, as amended. The Trust shall be the surviving entity in the
Trust Merger (sometimes hereinafter referred to as the "Surviving Entity") and
shall continue to be governed by the laws of the State of Maryland and the
separate existence of the Trust with all its rights, privileges, immunities,
powers and franchises shall continue unaffected by the Merger.
 
    The Trust Merger shall have the effects specified in the MGCL.
 
    1.3. CLOSING. The Closing of the Mergers (the "Closing") shall take place
(i) at the offices of the Trust, One Logen Square, Suite 1105, Philadelphia,
Pennsylvania 19103 at 10:00 a.m. local time on the first business day on which
the last to be fulfilled or waived of the conditions set forth in Section 6.1
hereof shall be fulfilled or (ii) at such other place and time and/or on such
other date as the Company, the Maryland Company and the Trust may agree.
 
    1.4. EFFECTIVE TIME. Following the fulfillment or waiver of the conditions
set forth in Section 6.1 hereof, and provided that this Agreement has not been
terminated or abandoned pursuant to Article VII hereof, the Company and the
Maryland Company will, at such time as they deem advisable, cause Articles
 
                                      A-1
<PAGE>
of Merger (the "Minnesota Articles of Merger") to be signed and filed with the
Secretary of State of the State of Minnesota as provided in Section 302A.641 of
the MBCA and Articles of Merger (the "Maryland Articles of Merger") to be filed
with the State Department of Assessments and Taxation of Maryland (the "SDAT")
as provided in Section 3-105 of the MGCL. Following the fulfillment or waiver of
the conditions set forth in Section 6.1 hereof, provided that this Agreement
shall not have been terminated or abandoned pursuant to Article VII hereof, the
Maryland Company and the Trust will, at such time as they deem advisable, cause
Articles of Merger (the "Trust Articles of Merger") to be filed with the SDAT as
provided in Section 3-105 of the MGCL. The Mergers shall become effective upon
the latter of (i) the filing the Articles of Merger with the Secretary of State
of the State of Minnesota and (ii) the acceptance for record of the Maryland
Articles of Merger and the Trust Articles of Merger by the SDAT (the "Effective
Time"). The parties hereto intend the Mergers to become effective
simultaneously.
 
                                   ARTICLE II
                        DECLARATION OF TRUST AND BYLAWS
                          OF THE SURVIVING CORPORATION
                            AND THE SURVIVING ENTITY
 
    2.1. SURVIVING CORPORATION. The Certificate of Incorporation and Bylaws of
the Maryland Company in effect at the Effective Time shall be the Certificate of
Incorporation and Bylaws of the Surviving Corporation, until duly amended in
accordance with the terms thereof and the MGCL.
 
    2.2. SURVIVING ENTITY. The Declaration of Trust and Bylaws of the Trust in
effect at the Effective Time shall be the Declaration of Trust and Bylaws of the
Surviving Entity, until duly amended in accordance with the terms thereof and
the MGCL.
 
                                  ARTICLE III
                             TRUSTEES AND OFFICERS
                        OF THE SURVIVING CORPORATION AND
                              THE SURVIVING ENTITY
 
    3.1. DIRECTORS. The directors of the Maryland Company at the Effective Time
shall, from and after the Effective Time, be the directors of the Surviving
Corporation until their successors have been duly elected or until their earlier
death, resignation or removal in accordance with the Surviving Corporation's
Certificate of Incorporation and Bylaws.
 
    3.2. TRUSTEES. The trustees of the Trust at the Effective Time shall, from
and after the Effective Time, be the trustees of the Surviving Entity until
their successors have been duly elected or until their earlier death,
resignation or removal in accordance with the Surviving Entity's Declaration of
Trust and Bylaws.
 
    3.3. OFFICERS. The officers of the Maryland Company at the Effective Time
shall, from and after the Effective Time, be the officers of the Surviving
Corporation until their successors have been duly appointed and qualified or
until their earlier death, resignation or removal in accordance with the
Surviving Corporation's Certificate of Incorporation and Bylaws. The officers of
the Trust at the Effective Time shall, from and after the Effective Time, be the
officers of the Surviving Entity until their successors have been duly appointed
and qualified or until their earlier death, resignation or removal in accordance
with the Surviving Entity's Declaration of Trust and Bylaws.
 
                                      A-2
<PAGE>
                                   ARTICLE IV
                     EFFECT OF THE MERGER ON CAPITAL STOCK;
                            EXCHANGE OF CERTIFICATES
 
    4.1. EFFECT ON CAPITAL STOCK. At the Effective Time, by virtue of the
Mergers and without any action on the part of the holder of any capital stock of
the Company:
 
    (a) Each share of the common stock, par value $0.01 per share (the "Company
Stock"), of the Company issued and outstanding immediately prior to the
Effective Time shall be converted into one validly issued, fully paid and
nonassessable common share of beneficial interest, par value $0.01 per share
(the "Common Shares") of the Trust. Each certificate (each, a "Certificate")
representing any such shares of Common Stock shall thereafter represent the
right to receive Common Shares. At the Effective Time, all shares of Common
Stock shall no longer be outstanding and shall be cancelled and retired and
shall cease to exist.
 
    (b) Each share of Common Stock issued and held in the Company's treasury at
the Effective Time, shall by virtue of the Mergers and without any action on the
part of the holder thereof, cease to be outstanding, shall be cancelled and
retired without payment of any consideration therefor and shall cease to exist.
 
    (c) At the Effective Time, each share of common stock, par value $0.01 per
share, of the Maryland Company issued and outstanding immediately prior to the
Effective Time shall, by virtue of the Mergers and without any action on the
part of the Maryland Company or the holder of such shares, be cancelled and
retired without payment of any consideration therefor.
 
    (d) At the Effective Time, each Common Share issued and outstanding
immediately prior to the Effective Time shall, by virtue of the Mergers and
without any action on the part of the Trust or the holder of such shares, be
cancelled and retired without payment of any consideration therefor.
 
    (e) Each option to purchase or otherwise acquire shares of Common Stock
pursuant to the stock option plan of the Company granted and outstanding
immediately prior to the Effective Time shall, by virtue of the Mergers and
without any action on the part of the holder of such option, be converted into
and become a right to purchase or otherwise acquire the same number of Common
Shares at the same price per share and upon the same terms and subject to the
same conditions as applicable to such options immediately prior to the Effective
Time.
 
    4.2. CONVERSION OF OUTSTANDING STOCK OF THE COMPANY. From and after the
Effective Time, each issued and outstanding share of Common Stock and all rights
in respect thereof shall be converted into one fully paid and nonassessable
Common Share, and each Certificate nominally representing shares of Common Stock
shall for all purposes be deemed to evidence the ownership of an equal number of
Common Shares. The holders of Certificates shall not be required immediately to
surrender the same in exchange for certificates for Common Shares, but, as
Certificates nominally representing shares of Common Stock are surrendered for
transfer, the Trust will cause to be issued certificates representing Common
Shares, and, at any time upon surrender by any holder of Certificates nominally
representing shares of Common Stock, the Trust will cause to be issued therefor
certificates for an equal number of Common Shares.
 
                                   ARTICLE V
                                   COVENANTS
 
    5.1. NASDAQ LISTING. The Trust shall use its reasonable best efforts to
cause the Common Shares to be issued in the Mergers to be approved for trading
on the Nasdaq SmallCap Market tier of The Nasdaq Stock Market ("NASDAQ"),
subject to official notice of issuance, prior to the Closing Date.
 
                                      A-3
<PAGE>
    5.2. INDEMNIFICATION; DIRECTORS' AND OFFICERS' INSURANCE. From and after the
Effective Time, the Surviving Entity agrees that it will indemnify, and pay or
reimburse reasonable expenses in advance of final disposition of a proceeding
to, (i) any individual who is a present or former director or officer of the
Company or the Maryland Company or (ii) any individual who, while a director of
the Company and at the request of the Company, serves or has served another
corporation, partnership, joint venture, trust, employee benefit plan or any
other enterprise as a director, officer, partner or trustee of such corporation,
partnership, joint venture, trust, employee benefit plan or other enterprise,
arising out of or pertaining to matters existing or occurring at or prior to the
Effective Time, whether asserted or claimed prior to, at or after the Effective
Time, to the fullest extent permitted by law.
 
                                   ARTICLE VI
                                   CONDITIONS
 
    6.1. CONDITION TO EACH PARTY'S OBLIGATION TO EFFECT THE MERGER. The
respective obligations of the Company, the Maryland Company and the Trust to
consummate the Mergers are subject to the fulfillment of each of the following
conditions:
 
    (a) The registration statement on Form S-4 to be filed by the Trust, which
will include the proxy statement of the Company soliciting proxies to approve
the Mergers, shall have been declared effective in accordance with the
Securities Act of 1933, as amended, by the Securities and Exchange Commission
and no stop order shall have been issued or threatened.
 
    (b) This Agreement shall have been duly approved by (i) the requisite vote
of holders of the shares of Common Stock, in accordance with applicable law and
the Amended and Restated Articles of Incorporation and Bylaws of the Company,
(ii) the Company, as sole shareholder of the Maryland Company, and (iii) the
Maryland Company, as sole shareholder of the Trust.
 
    (c) Holders of not more than 5.0% of the Common Stock issued and outstanding
on the record date set for the special meeting of the Company's shareholders
called to approve the Mergers shall have exercised their rights under Section
302A.471 of the MBCA.
 
    (d) The Common Shares issuable to the Company's shareholders pursuant to
this Agreement shall have been authorized for trading on the NASDAQ or the
National Market tier of the Nasdaq Stock Market, subject to official notice of
issuance.
 
    (e) No order to restrain, enjoin or otherwise prevent the consummation of
this Agreement or either of the Mergers shall have been entered by any court or
administrative body and shall remain in full force and effect.
 
    (f) The obligations to consummate the Mergers contemplated hereby shall not
have been terminated pursuant to Article VII hereof.
 
    (g) All consents and approvals, if any, necessary for the transactions
contemplated hereby shall have been obtained and be in full force and effect.
 
                                  ARTICLE VII
                                  TERMINATION
 
    7.1. TERMINATION BY MUTUAL CONSENT. This Agreement may be terminated and the
Mergers may be abandoned at any time prior to the Effective Time, before or
after the approval by holders of the Common Stock, by the mutual consent of the
Boards of Directors of the Company and the Maryland Company and the Board of
Trustees of the Trust.
 
    7.2. EFFECT OF TERMINATION AND ABANDONMENT. In the event of termination of
this Agreement and abandonment of the Merger pursuant to this Article VII, no
party hereto (or any of its
 
                                      A-4
<PAGE>
directors, trustees or officers) shall have any liability or further obligation
to any other party to this Agreement.
 
                                  ARTICLE VIII
                           MISCELLANEOUS AND GENERAL
 
    8.1. MODIFICATION OR AMENDMENT. Subject to the applicable provisions of the
MBCA and the MGCL, at any time prior to the Effective Time, the parties hereto
may amend or modify this Agreement by written agreement, executed and delivered
by duly authorized officers of the respective parties; provided, however, that
after the Mergers have been approved by the Company's shareholders, no amendment
or modification may change the amount or form of the consideration to be
received by such shareholders in the Mergers.
 
    8.2. WAIVER OF CONDITIONS. The conditions to each of the parties'
obligations to consummate the relevant Merger are for the sole benefit of such
party and may be waived by such party in whole or in part to the extent
permitted by applicable law.
 
    8.3. COUNTERPARTS. For the convenience of the parties hereto, this Agreement
may be executed in any number of counterparts, each of which shall be deemed an
original, and all of which shall constitute one and the same agreement.
 
    8.4. GOVERNING LAW. This Agreement shall be governed by and construed in
accordance with the laws of the States of Minnesota and Maryland, in the case of
the Company Merger, and in accordance with the laws of the State of Maryland, in
the case of the Trust Merger.
 
    8.5. NO THIRD PARTY BENEFICIARIES. Except as provided in Section 5.2, no
provision of this Agreement is intended, nor shall it be interpreted, to provide
or create any third party beneficiary rights or any other rights of any kind in
any client, customer, affiliate, stockholder, partner or employee or any other
person or entity.
 
    8.6. HEADINGS. The Article, Section and paragraph headings herein are for
convenience of reference only and shall have no effect on the construction or
meaning of this Agreement.
 
    8.7. SERVICE OF PROCESS. (a) The Trust may be served with process in the
State of Minnesota in a proceeding for the enforcement of an obligation of the
Company, the Maryland Company or the Trust, and in a proceeding for the
enforcement of the rights of a dissenting shareholder of the Company against the
Maryland Company or the Trust. The Trust hereby irrevocably appoints the
Secretary of State of the State of Minnesota as its agent to accept service of
process in any such proceeding. The address to which a copy of such process
shall be mailed by the Secretary of State to the Trust is One Logan Square,
Suite 1105, Philadelphia, Pennsylvania 19103, Attn: Clay W. Hamlin, III.
 
    (b) The Trust may be served with process in the State of Maryland in any
proceeding for the enforcement of any obligation of the Company or the Maryland
Company, as well as for enforcement of any obligations of the Trust arising from
the Mergers, and it does hereby irrevocably appoint the Secretary of State of
the State of Maryland as its agent to accept service of process in any such suit
or other proceedings. The address to which a copy of such process shall be
mailed by the Secretary of State to the Trust is One Logan Square, Suite 1105,
Philadelphia, Pennsylvania 19103, Attn: Clay W. Hamlin, III.
 
                                      A-5
<PAGE>
    IN WITNESS WHEREOF, this Agreement has been duly executed and delivered by
the duly authorized officers of the parties hereto on the date first hereinabove
written.
 
                                          CORPORATE OFFICE PROPERTIES
                                          TRUST, INC.
 
                                          By: /s/ CLAY W. HAMLIN, III
- --------------------------------------------------------------------------------
 
                                             Name: Clay W. Hamlin, III
                                             Title: President and Chief
                                          Executive Officer
 
                                          COPT, INC.
 
                                          By: /s/ CLAY W. HAMLIN, III
- --------------------------------------------------------------------------------
 
                                             Name: Clay W. Hamlin, III
                                             Title: President
 
                                          CORPORATE OFFICE PROPERTIES
                                          TRUST
 
                                          By: /s/ CLAY W. HAMLIN, III
- --------------------------------------------------------------------------------
 
                                             Name: Clay W. Hamlin, III
                                             Title: President and Chief
                                          Executive Officer
 
                                      A-6
<PAGE>
                                                                      APPENDIX B
 
                       CORPORATE OFFICE PROPERTIES TRUST
                   AMENDED AND RESTATED DECLARATION OF TRUST
                            Dated February   , 1998
 
    This DECLARATION OF TRUST is made as of the date set forth above by the
undersigned Trustee (as defined herein):
 
                                   ARTICLE I
                                   FORMATION
 
    The Trust is a real estate investment trust within the meaning of Title 8.
The Trust shall not be deemed to be a general partnership, limited partnership,
joint venture, joint stock company or a corporation (but nothing herein shall
preclude the Trust from being treated for tax purposes as an association under
the Code).
 
                                   ARTICLE II
                                      NAME
 
    The name of the Trust is:
 
                       Corporate Office Properties Trust
 
    Under circumstances in which the Board of Trustees of the Trust (the "Board
of Trustees" or "Board") determines that the use of the name of the Trust is not
practicable, the Trust may use any other designation or name for the Trust.
 
                                  ARTICLE III
                              PURPOSES AND POWERS
 
    Section 3.1  PURPOSES.  The purposes for which the Trust is formed are to
invest in and to acquire, hold, manage, administer, control and dispose of
property and interests (direct or indirect and of whatsoever nature) in and in
respect of property, including, without limitation or obligation, engaging in
business as a real estate investment trust under the Internal Revenue Code of
1986, as amended (the "Code").
 
    Section 3.2  POWERS.  The Trust shall have all of the powers granted to real
estate investment trusts by Title 8 and all other powers set forth in the
Declaration of Trust which are not inconsistent with law and are appropriate to
promote and attain the purposes set forth in the Declaration of Trust.
 
                                   ARTICLE IV
                                 RESIDENT AGENT
 
    The name of the resident agent of the Trust in the State of Maryland is
James J. Hanks, Jr., whose post office address is c/o Ballard Spahr Andrews &
Ingersoll, 300 East Lombard Street, Baltimore, Maryland 21202. The resident
agent is a citizen of and resides in the State of Maryland. The Trust may have
such offices or places of business within or outside the State of Maryland as
the Board of Trustees may from time to time determine.
 
                                      B-1
<PAGE>
                                   ARTICLE V
                               BOARD OF TRUSTEES
 
    Section 5.1  POWERS.  Subject to any express limitations contained in the
Declaration of Trust or in the Bylaws, (a) the business and affairs of the Trust
shall be managed under the direction of the Board of Trustees and (b) the Board
shall have full, exclusive and absolute power, control and authority over any
and all property of the Trust. The Board may take any action as in its sole
judgment and discretion is necessary or appropriate to conduct the business and
affairs of the Trust. The Declaration of Trust shall be construed with the
presumption in favor of the grant of power and authority to the Board. Any
construction of the Declaration of Trust or determination made in good faith by
the Board concerning its powers and authority hereunder shall be conclusive. The
enumeration and definition of particular powers of the Trustees included in the
Declaration of Trust or in the Bylaws shall in no way be limited or restricted
by reference to or inference from the terms of this or any other provision of
the Declaration of Trust or the Bylaws or construed or deemed by inference or
otherwise in any manner to exclude or limit the powers conferred upon the Board
or the Trustees under the general laws of the State of Maryland or any other
applicable laws.
 
    The Board, without any action by the shareholders of the Trust, shall have
and may exercise, on behalf of the Trust, without limitation, the power to
terminate the status of the Trust as a real estate investment trust under the
Code; to determine that compliance with any restriction or limitations on
ownership and transfers of shares of the Trust's beneficial interest set forth
in Article VII of the Declaration of Trust is no longer required in order for
the Trust to qualify as a REIT; to adopt, amend and repeal Bylaws; to elect
officers in the manner prescribed in the Bylaws; to solicit proxies from holders
of shares of beneficial interest of the Trust; and to do any other acts and
deliver any other documents necessary or appropriate to the foregoing powers.
 
    Section 5.2  NUMBER AND CLASSIFICATION.  The number of Trustees (hereinafter
the "Trustees") initially shall be 1, which number may be increased or decreased
pursuant to the Bylaws of the Trust. The Trustees shall be elected at every
third annual meeting of shareholders in the manner provided in the Bylaws or, in
order to fill any vacancy on the Board of Trustees, in the manner provided in
the Bylaws. The name and address of the Trustee who shall serve until the first
annual meeting of shareholders and until his successor is duly elected and
qualify is:
 
<TABLE>
<S>                                    <C>
Name                                   Address
Clay W. Hamlin, III                    1 Logan Square
                                       Philadelphia, PA 19103
</TABLE>
 
    This Trustee may increase the number of Trustees and fill any vacancy,
whether resulting from an increase in the number of Trustees or otherwise, on
the Board of Trustees prior to the first annual meeting of shareholders in the
manner provided in the Bylaws. It shall not be necessary to list in the
Declaration of Trust the names and addresses of any Trustees hereinafter
elected.
 
    At any meeting of shareholders, the Trustees (other than any Trustee elected
solely by holders of one or more classes or series of Preferred Shares) may be
classified, with respect to the terms for which they severally hold office, into
three classes, one class to hold office initially for a term expiring at the
next succeeding annual meeting of shareholders, another class to hold office
initially for a term expiring at the second succeeding annual meeting of
shareholders and another class to hold office initially for a term expiring at
the third succeeding annual meeting of shareholders, with the Trustees of each
class to hold office until their successors are duly elected and qualify. At
each annual meeting of shareholders, the successors to the class of Trustees
whose term expires at such meeting shall be elected to hold office for a term
expiring at the annual meeting of shareholders held in the third year following
the year of their election.
 
                                      B-2
<PAGE>
    Section 5.3  RESIGNATION, REMOVAL OR DEATH.  Any Trustee may resign by
written notice to the Board, effective upon execution and delivery to the Trust
of such written notice or upon any future date specified in the notice. Subject
to the rights of holders of one or more classes or series of Preferred Shares to
elect one or more Trustees, a Trustee may be removed at any time, only for cause
and only at a meeting of the shareholders, by the affirmative vote of the
holders of not less than two-thirds of the Shares then outstanding and entitled
to vote generally in the election of Trustees.
 
                                   ARTICLE VI
                         SHARES OF BENEFICIAL INTEREST
 
    Section 6.1  AUTHORIZED SHARES.  The beneficial interest of the Trust shall
be divided into shares of beneficial interest (the "Shares"). The Trust has
authority to issue 50,000,000 shares of beneficial interest, consisting of
45,000,000 common shares of beneficial interest, $0.01 par value per share
("Common Shares") and 5,000,000 preferred shares of beneficial interest, $0.01
par value per share ("Preferred Shares"). The Board of Trustees, without any
action by the shareholders of the Trust, may amend the Declaration of Trust from
time to time to increase or decrease the aggregate number of Shares or the
number of Shares of any class that the Trust has authority to issue. If shares
of one class of stock are classified or reclassified into shares of another
class of stock pursuant to Sections 6.2, 6.3 or 6.4 of this Article VI, the
number of authorized shares of the former class shall be automatically decreased
and the number of shares of the latter class shall be automatically increased,
in each case by the number of shares so classified or reclassified.
 
    Section 6.2  COMMON SHARES.  Subject to the provisions of Article VII, each
Common Share shall entitle the holder thereof to one vote on each matter upon
which holders of Common Shares are entitled to vote. The Board of Trustees may
reclassify any unissued Common Shares from time to time in one or more classes
or series of Shares.
 
    Section 6.3  PREFERRED SHARES.  The Board of Trustees may classify any
unissued Preferred Shares and reclassify any previously classified but unissued
Preferred Shares of any series from time to time, in one or more series of
Shares.
 
    Section 6.4  CLASSIFIED OR RECLASSIFIED SHARES.  Prior to issuance of
classified or reclassified Shares of any class or series, the Board of Trustees
by resolution shall (a) designate that class or series to distinguish it from
all other classes and series of Shares; (b) specify the number of Shares to be
included in the class or series; (c) set, subject to the provisions of Article
VII and subject to the express terms of any class or series of Shares
outstanding at the time, the preferences, conversion or other rights, voting
powers, restrictions, limitations as to dividends or other distributions,
qualifications and terms and conditions of redemption for each class or series;
and (d) cause the Trust to file articles supplementary with the State Department
of Assessments and Taxation of Maryland (the "SDAT"). Any of the terms of any
class or series of Shares set pursuant to clause (c) of this Section 6.4 may be
made dependent upon facts ascertainable outside the Declaration of Trust
(including the occurrence of any event, including a determination or action by
the Trust or any other person or body) and may vary among holders thereof,
provided that the manner in which such facts or variations shall operate upon
the terms of such class or series of Shares is clearly and expressly set forth
in the articles supplementary filed with the SDAT.
 
    Section 6.5  AUTHORIZATION BY BOARD OF SHARE ISSUANCE.  The Board of
Trustees may authorize the issuance from time to time of Shares of any class or
series, whether now or hereafter authorized, or securities or rights convertible
into Shares of any class or series, whether now or hereafter authorized, for
such consideration (whether in cash, property, past or future services,
obligation for future payment or otherwise) as the Board of Trustees may deem
advisable (or without consideration in the case of a Share split or Share
dividend), subject to such restrictions or limitations, if any, as may be set
forth in the Declaration of Trust or the Bylaws of the Trust.
 
                                      B-3
<PAGE>
    Section 6.6  DIVIDENDS AND DISTRIBUTIONS.  The Board of Trustees may from
time to time authorize and declare to shareholders such dividends or
distributions, in cash or other assets of the Trust or in securities of the
Trust or from any other source as the Board of Trustees in its discretion shall
determine. The Board of Trustees shall endeavor to declare and pay such
dividends and distributions as shall be necessary for the Trust to qualify as a
real estate investment trust under the Code; however, shareholders shall have no
right to any dividend or distribution unless and until authorized and declared
by the Board. The exercise of the powers and rights of the Board of Trustees
pursuant to this Section 6.6 shall be subject to the provisions of any class or
series of Shares at the time outstanding. Notwithstanding any other provision in
the Declaration of Trust, no determination shall be made by the Board of
Trustees nor shall any transaction be entered into by the Trust which would
cause any Shares or other beneficial interest in the Trust not to constitute
"transferable shares" or "transferable certificates of beneficial interest"
under Section 856(a)(2) of the Code or which would cause any distribution to
constitute a preferential dividend as described in Section 562(c) of the Code.
 
    Section 6.7  GENERAL NATURE OF SHARES.  All Shares shall be personal
property entitling the shareholders only to those rights provided in the
Declaration of Trust. The shareholders shall have no interest in the property of
the Trust and shall have no right to compel any partition, division, dividend or
distribution of the Trust or of the property of the Trust. The death of a
shareholder shall not terminate the Trust. The Trust is entitled to treat as
shareholders only those persons in whose names Shares are registered as holders
of Shares on the beneficial interest ledger of the Trust.
 
    Section 6.8  FRACTIONAL SHARES.  The Trust may, without the consent or
approval of any shareholder, issue fractional Shares, eliminate a fraction of a
Share by rounding up or down to a full Share, arrange for the disposition of a
fraction of a Share by the person entitled to it, or pay cash for the fair value
of a fraction of a Share.
 
    Section 6.9  DECLARATION AND BYLAWS.  All shareholders are subject to the
provisions of the Declaration of Trust and the Bylaws of the Trust. Except as
otherwise specifically required by law, the Trustees shall have the sole power
to adopt, amend and modify the Bylaws of the Trust.
 
    Section 6.10  DIVISIONS AND COMBINATIONS OF SHARES.  Subject to an express
provision to the contrary in the terms of any class or series of beneficial
interest hereafter authorized, the Board of Trustees shall have the power to
divide or combine the outstanding shares of any class or series of beneficial
interest, without a vote of shareholders.
 
                                  ARTICLE VII
                RESTRICTION ON TRANSFER AND OWNERSHIP OF SHARES
 
    Section 7.1  DEFINITIONS.  For the purpose of this Article VII, the
following terms shall have the following meanings:
 
    AGGREGATE SHARE OWNERSHIP LIMIT.  The term "Aggregate Share Ownership Limit"
shall mean not more than 9.8 percent in value of the aggregate of the
outstanding Equity Shares. The value of the outstanding Equity Shares shall be
determined by the Board of Trustees in good faith, which determination shall be
conclusive for all purposes hereof.
 
    BENEFICIAL OWNERSHIP.  The term "Beneficial Ownership" shall mean ownership
of Equity Shares by a Person, whether the interest in Equity Shares is held
directly or indirectly (including by a nominee), and shall include interests
that would be treated as owned through the application of Section 544 of the
Code, as modified by Section 856(h)(1)(B) of the Code. The terms "Beneficial
Owner," "Beneficially Owns" and "Beneficially Owned" shall have the correlative
meanings.
 
                                      B-4
<PAGE>
    BUSINESS DAY.  The term "Business Day" shall mean any day, other than a
Saturday or Sunday, that is neither a legal holiday nor a day on which banking
institutions in New York City are authorized or required by law, regulation or
executive order to close.
 
    CHARITABLE BENEFICIARY.  The term "Charitable Beneficiary" shall mean one or
more beneficiaries of the Charitable Trust as determined pursuant to Section
7.3.6, provided that each such organization must be described in Section
501(c)(3) of the Code and contributions to each such organization must be
eligible for deduction under each of Sections 170(b)(1)(A), 2055 and 2522 of the
Code.
 
    CHARITABLE TRUST.  The term "Charitable Trust" shall mean any trust provided
for in Section 7.3.1.
 
    CODE.  The term "Code" shall mean the Internal Revenue Code of 1986, as
amended from time to time.
 
    COMMON SHARE OWNERSHIP LIMIT.  The term "Common Share Ownership Limit" shall
mean not more than 9.8 percent (in value or in number of shares, whichever is
more restrictive) of the aggregate of the outstanding Common Shares. The number
and value of outstanding Common Shares shall be determined by the Board of
Trustees in good faith, which determination shall be conclusive for all purposes
hereof.
 
    CONSTRUCTIVE OWNERSHIP.  The term "Constructive Ownership" shall mean
ownership of Equity Shares by a Person, whether the interest in Equity Shares is
held directly or indirectly (including by a nominee), and shall include
interests that would be treated as owned through the application of Section
318(a) of the Code, as modified by Section 856(d)(5) of the Code. The terms
"Constructive Owner," "Constructively Owns" and "Constructively Owned" shall
have the correlative meanings.
 
    DECLARATION OF TRUST.  The term "Declaration of Trust" shall mean this
Declaration of Trust as filed for record with the SDAT, and any amendments
thereto.
 
    EQUITY SHARES.  The term "Equity Shares" shall mean all classes or series of
Shares, including, without limitation, Common Shares and Preferred Shares.
 
    EXCEPTED HOLDER.  The term "Excepted Holder" shall mean a Permitted Holder
or a shareholder of the Trust for whom an Excepted Holder Limit is created by
this Article VII or by the Board of Trustees pursuant to Section 7.2.7.
 
    EXCEPTED HOLDER LIMIT.  The term "Excepted Holder Limit" shall mean, (i) in
the case of Permitted Holders, the percentage limit established by the Board of
Trustees prior to their becoming shareholders of the Trust, subject to
adjustment pursuant to Sections 7.2.7 and 7.2.8 and (ii) in the case of any
other Excepted Holder, provided that the affected Excepted Holder agrees to
comply with the requirements established by the Board of Trustees pursuant to
Section 7.2.7, and subject to adjustment pursuant to Section 7.2.8, the
percentage limit established by the Board of Trustees pursuant to Section 7.2.7.
 
    INITIAL DATE.  The term "Initial Date" shall mean the date upon which this
Declaration of Trust containing this Article VII is filed for record with the
SDAT.
 
    MARKET PRICE.  The term "Market Price" on any date shall mean, with respect
to any class or series of outstanding Equity Shares, the Closing Price for such
Equity Shares on such date. The "Closing Price" on any date shall mean the last
sale price for such Equity Shares, regular way, or, in case no such sale takes
place on such day, the average of the closing bid and asked prices, regular way,
for such Equity Shares, in either case as reported in the principal consolidated
transaction reporting system with respect to the securities listed or admitted
to trading on National Market or Small Cap tier of the Nasdaq Stock Market
("Nasdaq-NM") or, if such Equity Shares are not listed or admitted to trading on
the Nasdaq-NM, as reported on the principal consolidated transaction reporting
system with respect to the principal national securities exchange on which such
Equity Shares are listed or admitted to trading or, if such Equity Shares are
not listed or admitted to trading on the Nasdaq-NM or any national securities
exchange, the last
 
                                      B-5
<PAGE>
quoted price, or, if not so quoted, the average of the high bid and low asked
prices in the over-the-counter market, as reported by the principal automated
quotation system that may then be in use or, if such Equity Shares are not
quoted by any such organization, the average of the closing bid and asked prices
as furnished by a professional market maker making a market in such Equity
Shares selected by the Board of Trustees or, in the event that no trading price
is available for such Equity Shares, the fair market value of Equity Shares, as
determined in good faith by the Board of Trustees.
 
    PERMITTED HOLDER.  The term Permitted Holder shall mean Jay H. Shidler, Clay
W. Hamlin, III, Westbrook Real Estate Fund I, L.P. and Westbrook Real Estate Co.
Investment Partnership I, L.P. and any corporation, partnership, trust, estate
or other legal entity controlled by any of the foregoing persons (or jointly
controlled by Messrs. Shidler and Hamlin).
 
    PERSON.  The term "Person" shall mean an individual, corporation,
partnership, estate, trust (including a trust qualified under Sections 401(a) or
501(c)(17) of the Code), a portion of a trust permanently set aside for or to be
used exclusively for the purposes described in Section 642(c) of the Code,
association, private foundation within the meaning of Section 509(a) of the
Code, joint stock company or other entity and also includes a group as that term
is used for purposes of Section 13(d)(3) of the Securities Exchange Act of 1934,
as amended, and a group to which an Excepted Holder Limit applies.
 
    PROHIBITED OWNER.  The term "Prohibited Owner" shall mean, with respect to
any purported Transfer, any Person who, but for the provisions of Section 7.2.1,
would Beneficially Own or Constructively Own Equity Shares, and if appropriate
in the context, shall also mean any Person who would have been the record owner
of Equity Shares that the Prohibited Owner would have so owned.
 
    REIT.  The term "REIT" shall mean a real estate investment trust within the
meaning of Section 856 of the Code.
 
    RESTRICTION TERMINATION DATE.  The term "Restriction Termination Date" shall
mean the first day after the Initial Date on which the Board of Trustees
determines that it is no longer in the best interests of the Trust to attempt
to, or continue to, qualify as a REIT or that compliance with the restrictions
and limitations on Beneficial Ownership, Constructive Ownership and Transfers of
Equity Shares set forth herein is no longer required in order for the Trust to
qualify as a REIT.
 
    SDAT.  The term "SDAT" shall mean the State Department of Assessments and
Taxation of Maryland.
 
    TRANSFER.  The term "Transfer" shall mean any issuance, sale, transfer,
gift, assignment, devise or other disposition, as well as any other event that
causes any Person to acquire Beneficial Ownership or Constructive Ownership, or
any agreement to take any such actions or cause any such events, of Equity
Shares or the right to vote or receive dividends on Equity Shares, including (a)
the granting or exercise of any option (or any disposition of any option), (b)
any disposition of any securities or rights convertible into or exchangeable for
Equity Shares or any interest in Equity Shares or any exercise of any such
conversion or exchange right and (c) Transfers of interests in other entities
that result in changes in Beneficial or Constructive Ownership of Equity Shares;
in each case, whether voluntary or involuntary, whether owned of record,
Constructively Owned or Beneficially Owned and whether by operation of law or
otherwise; provided, however, that the term Transfer shall not include the
initial issuance of Equity Shares in connection with the indirect merger of
Corporate Office Properties Trust, Inc., a Minnesota corporation, with and into
the Trust. The terms "Transferring" and "Transferred" shall have the correlative
meanings.
 
    TRUSTEE.  The term "Trustee" shall mean the Person unaffiliated with the
Trust and a Prohibited Owner, that is appointed by the Trust to serve as trustee
of the Charitable Trust.
 
                                      B-6
<PAGE>
    Section 7.2  EQUITY SHARES.
 
    Section 7.2.1  OWNERSHIP LIMITATIONS.  During the period commencing on the
Initial Date and prior to the Restriction Termination Date:
 
    (a)  BASIC RESTRICTIONS.
 
    (i) (1) No Person, other than an Excepted Holder, shall Beneficially Own or
Constructively Own Equity Shares in excess of the Aggregate Share Ownership
Limit, (2) no Person, other than an Excepted Holder, shall Beneficially Own or
Constructively Own Common Shares in excess of the Common Share Ownership Limit
and (3) no Excepted Holder shall Beneficially Own or Constructively Own Equity
Shares in excess of the Excepted Holder Limit for such Excepted Holder.
 
    (ii) No Person shall Beneficially or Constructively Own Equity Shares to the
extent that such Beneficial or Constructive Ownership of Equity Shares would
result in the Trust being "closely held" within the meaning of Section 856(h) of
the Code (without regard to whether the ownership interest is held during the
last half of a taxable year), or otherwise failing to qualify as a REIT
(including, but not limited to, Beneficial or Constructive Ownership that would
result in the Trust owning (actually or Constructively) an interest in a tenant
that is described in Section 856(d)(2)(B) of the Code if the income derived by
the Trust from such tenant would cause the Trust to fail to satisfy any of the
gross income requirements of Section 856(c) of the Code).
 
    (iii) Notwithstanding any other provisions contained herein, any Transfer of
Equity Shares (whether or not such Transfer is the result of a transaction
entered into through the facilities of the Nasdaq-NM or any other national
securities exchange or automated inter-dealer quotation system) that, if
effective, would result in Equity Shares being beneficially owned by less than
100 Persons (determined under the principles of Section 856(a)(5) of the Code)
shall be void AB INITIO, and the intended transferee shall acquire no rights in
such Equity Shares.
 
    (b) TRANSFER IN TRUST. If any Transfer of Equity Shares (whether or not such
Transfer is the result of a transaction entered into through the facilities of
the NYSE or any other national securities exchange or automated inter-dealer
quotation system) occurs which, if effective, would result in any Person
Beneficially Owning or Constructively Owning Equity Shares in violation of
Section 7.2.1(a)(i) or (ii),
 
    (i) then that number of Equity Shares the Beneficial or Constructive
Ownership of which otherwise would cause such Person to violate Section
7.2.1(a)(i) or (ii)(rounded to the nearest whole share) shall be automatically
transferred to a Charitable Trust for the benefit of a Charitable Beneficiary,
as described in Section 7.3, effective as of the close of business on the
Business Day prior to the date of such Transfer, and such Person shall acquire
no rights in such Equity Shares; or
 
    (ii) if the transfer to the Charitable Trust described in clause (i) of this
sentence would not be effective for any reason to prevent the violation of
Section 7.2.1(a)(i) or (ii), then the Transfer of that number of Equity Shares
that otherwise would cause any Person to violate Section 7.2.1(a)(i) or (ii)
shall be void AB INITIO, and the intended transferee shall acquire no rights in
such Equity Shares.
 
    Section 7.2.2  REMEDIES FOR BREACH.  If the Board of Trustees or any duly
authorized committee thereof shall at any time determine in good faith that a
Transfer or other event has taken place that results in a violation of Section
7.2.1 or that a Person intends to acquire or has attempted to acquire Beneficial
or Constructive Ownership of any Equity Shares in violation of Section 7.2.1
(whether or not such violation is intended), the Board of Trustees or a
committee thereof shall take such action as it deems advisable to refuse to give
effect to or to prevent such Transfer or other event, including, without
limitation, causing the Trust to redeem Equity Shares, refusing to give effect
to such Transfer on the books of the Trust or instituting proceedings to enjoin
such Transfer or other event; PROVIDED, HOWEVER, that any Transfers or attempted
Transfers or other events in violation of Section 7.2.1 shall automatically
result in the transfer to the Charitable Trust described above, and, where
applicable, such Transfer (or other event) shall be void AB INITIO as provided
above irrespective of any action (or non-action) by the Board of Trustees or a
committee thereof.
 
                                      B-7
<PAGE>
    Section 7.2.3  NOTICE OF RESTRICTED TRANSFER.  Any Person who, as the result
of a Transfer, attempted Transfer or intended Transfer acquires or attempts or
intends to acquire Beneficial Ownership or Constructive Ownership of Equity
Shares that will or may violate Section 7.2.1(a), or any Person who would have
owned Equity Shares that resulted in a transfer to the Charitable Trust pursuant
to the provisions of Section 7.2.1(b), shall immediately give written notice to
the Trust of such event, or in the case of such a proposed or attempted
transaction, give at least 15 days prior written notice, and shall provide to
the Trust such other information as the Trust may request in order to determine
the effect, if any, of such Transfer on the Trust's status as a REIT.
 
    Section 7.2.4  OWNERS REQUIRED TO PROVIDE INFORMATION.  From the Initial
Date and prior to the Restriction Termination Date:
 
    (a) every owner of more than five percent (or such other percentage as
required by the Code or the Treasury Regulations promulgated thereunder) of the
outstanding Equity Shares, within 30 days after the end of each taxable year,
shall give written notice to the Trust stating the name and address of such
owner, the number of Equity Shares and other Equity Shares Beneficially Owned
and a description of the manner in which such shares are held. Each such owner
shall provide to the Trust such additional information as the Trust may request
in order to determine the effect, if any, of such Beneficial Ownership on the
Trust's status as a REIT and to ensure compliance with the Aggregate Share
Ownership Limit.
 
    (b) each Person who is a Beneficial or Constructive Owner of Equity Shares
and each Person (including the shareholder of record) who is holding Equity
Shares for a Beneficial or Constructive Owner shall provide to the Trust such
information as the Trust may request, in good faith, in order to determine the
Trust's status as a REIT and to comply with requirements of any taxing authority
or governmental authority or to determine such compliance.
 
    Section 7.2.5  REMEDIES NOT LIMITED.  Subject to Section 5.1 of the
Declaration of Trust, nothing contained in this Section 7.2 shall limit the
authority of the Board of Trustees to take such other action as it deems
necessary or advisable to protect the Trust and the interests of its
shareholders in preserving the Trust's status as a REIT.
 
    Section 7.2.6  AMBIGUITY.  In the case of an ambiguity in the application of
any of the provisions of this Section 7.2, Section 7.3 or any definition
contained in Section 7.1, the Board of Trustees shall have the power to
determine the application of the provisions of this Section 7.2 or Section 7.3
or any such definition with respect to any situation based on the facts known to
it. In the event Section 7.2 or 7.3 requires an action by the Board of Trustees
and the Declaration of Trust fails to provide specific guidance with respect to
such action, the Board of Trustees shall have the power to determine the action
to be taken so long as such action is not contrary to the provisions of Sections
7.1, 7.2 or 7.3.
 
    Section 7.2.7  EXCEPTIONS.
 
    (a) Subject to Section 7.2.1(a)(ii), the Board of Trustees, in its sole
discretion, may exempt a Person from the Aggregate Share Ownership Limit and the
Common Share Ownership Limit, as the case may be, and may establish or increase
an Excepted Holder Limit for a Person (including a Permitted Holder) if:
 
    (i) the Board of Trustees obtains such representations and undertakings from
such Person as are reasonably necessary to ascertain that no individual's
Beneficial or Constructive Ownership of such Equity Shares will violate Section
7.2.1(a)(ii);
 
    (ii) such Person does not and represents that it will not own, actually or
Constructively, an interest in a tenant of the Trust (or a tenant of any entity
owned or controlled by the Trust) that would cause the Trust to own, actually or
Constructively, more than a 9.9% interest (as set forth in Section 856(d)(2)(B)
of the Code) in such tenant and the Board of Trustees obtains such
representations and undertakings from such Person as are reasonably necessary to
ascertain this fact (for this purpose, a tenant from whom the Trust (or an
entity owned or controlled by the Trust) derives (and is expected to continue to
derive) a sufficiently small amount of revenue such that, in the opinion of the
Board of Trustees, rent from such tenant would not adversely affect the Trust's
ability to qualify as a REIT, shall not be treated as a tenant of the Trust);
and
 
                                      B-8
<PAGE>
    (iii) such Person agrees that any violation or attempted violation of such
representations or undertakings (or other action which is contrary to the
restrictions contained in Sections 7.2.1 through 7.2.6) will result in such
Equity Shares being automatically transferred to a Charitable Trust in
accordance with Sections 7.2.1(b) and 7.3.
 
    (b) Prior to granting any exception pursuant to Section 7.2.7(a), the Board
of Trustees may require a ruling from the Internal Revenue Service, or an
opinion of counsel, in either case in form and substance satisfactory to the
Board of Trustees in its sole discretion, as it may deem necessary or advisable
in order to determine or ensure the Trust's status as a REIT. Notwithstanding
the receipt of any ruling or opinion, the Board of Trustees may impose such
conditions or restrictions as it deems appropriate in connection with granting
such exception.
 
    (c) Subject to Section 7.2.1(a)(ii), an underwriter which participates in a
public offering or a private placement of Equity Shares (or securities
convertible into or exchangeable for Equity Shares) may Beneficially Own or
Constructively Own Equity Shares (or securities convertible into or exchangeable
for Equity Shares) in excess of the Aggregate Share Ownership Limit, the Common
Share Ownership Limit or both such limits, but only to the extent necessary to
facilitate such public offering or private placement.
 
    (d) The Board of Trustees may only reduce the Excepted Holder Limit for an
Excepted Holder: (1) with the written consent of such Excepted Holder at any
time, or (2) pursuant to the terms and conditions of the agreements and
undertakings entered into with such Excepted Holder in connection with the
establishment of the Excepted Holder Limit for that Excepted Holder. No Excepted
Holder Limit shall be reduced to a percentage that is less than the Common Share
Ownership Limit.
 
    Section 7.2.8  INCREASE IN AGGREGATE SHARE OWNER-SHIP AND COMMON SHARE
OWNERSHIP LIMITS.  The Board of Trustees may from time to time increase the
Common Share Ownership Limit and the Aggregate Share Ownership Limit.
 
        Section 7.2.9  LEGEND.  Each certificate for Equity Shares shall
    bear substantially the following legend:
 
    The shares represented by this Certificate are subject to restrictions
    on Beneficial Ownership, Constructive Ownership and Transfer for the
    purpose of the Trust's maintenance of its status as a real estate
    investment trust (a "REIT") under the Internal Revenue Code of 1986, as
    amended (the "Code"). Subject to certain further restrictions and except
    as expressly provided in the Declaration of Trust of the Trust, (i) no
    Person may Beneficially Own or Constructively Own Common Shares of the
    Trust in excess of 9.8 percent (in value or number of shares) of the
    outstanding Common Shares of the Trust unless such Person is an Excepted
    Holder or a Permitted Holder (in which case the Excepted Holder Limit
    shall be applicable); (ii) no Person may Beneficially Own or
    Constructively Own Equity Shares of the Trust in excess of 9.8 percent
    of the value of the total outstanding Equity Shares of the Trust, unless
    such Person is an Excepted Holder or a Permitted Holder (in which case
    the Excepted Holder Limit shall be applicable); (iii) no Person may
    Beneficially Own or Constructively Own Equity Shares that would result
    in the Trust being "closely held" under Section 856(h) of the Code or
    otherwise cause the Trust to fail to qualify as a REIT; and (iv) no
    Person may Transfer Equity Shares if such Transfer would result in
    Equity Shares of the Trust being owned by fewer than 100 Persons. Any
    Person who Beneficially Owns or Constructively Owns or attempts to
    Beneficially Own or Constructively Own Equity Shares which cause or will
    cause a Person to Beneficially Own or Constructively Own Equity Shares
    in excess or in violation of the above limitations must immediately
    notify the Trust. If any of the restrictions on transfer or ownership
    are violated, the Equity Shares represented hereby will be automatically
    transferred to a Trustee of a Charitable Trust for the benefit of one or
    more Charitable Beneficiaries. In addition, upon the occurrence of
    certain events, attempted Transfers in violation of the restrictions
    described above may be void AB INITIO. All capitalized terms in this
    legend have the meanings defined in the Declaration of Trust of the
    Trust, as the
 
                                      B-9
<PAGE>
    same may be amended from time to time, a copy of which, including the
    restrictions on transfer and ownership, will be furnished to each holder
    of Equity Shares of the Trust on request and without charge.
 
    Instead of the foregoing legend, the certificate may state that the Trust
will furnish a full statement about certain restrictions on transferability to a
shareholder on request and without charge.
 
    Section 7.3  TRANSFER OF EQUITY SHARES IN TRUST.
 
    Section 7.3.1  OWNERSHIP IN TRUST.  Upon any purported Transfer or other
event described in Section 7.2.1(b) that would result in a transfer of Equity
Shares to a Charitable Trust, such Equity Shares shall be deemed to have been
transferred to the Trustee as trustee of a Charitable Trust for the exclusive
benefit of one or more Charitable Beneficiaries. Such transfer to the Trustee
shall be deemed to be effective as of the close of business on the Business Day
prior to the purported Transfer or other event that results in the transfer to
the Charitable Trust pursuant to Section 7.2.1(b). The Trustee shall be
appointed by the Trust and shall be a Person unaffiliated with the Trust and any
Prohibited Owner. Each Charitable Beneficiary shall be designated by the Trust
as provided in Section 7.3.6.
 
    Section 7.3.2  STATUS OF SHARES HELD BY THE TRUSTEE.  Equity Shares held by
the Trustee shall be issued and outstanding Equity Shares of the Company. The
Prohibited Owner shall have no rights in the shares held by the Trustee. The
Prohibited Owner shall not benefit economically from ownership of any shares
held in trust by the Trustee, shall have no rights to dividends or other
distributions and shall not possess any rights to vote or other rights
attributable to the shares held in the Charitable Trust.
 
    Section 7.3.3  DIVIDEND AND VOTING RIGHTS.  The Trustee shall have all
voting rights and rights to dividends or other distributions with respect to
Equity Shares held in the Charitable Trust, which rights shall be exercised for
the exclusive benefit of the Charitable Beneficiary. Any dividend or other
distribution paid prior to the discovery by the Trust that Equity Shares have
been transferred to the Trustee shall be paid with respect to such Equity Shares
to the Trustee upon demand and any dividend or other distribution authorized but
unpaid shall be paid when due to the Trustee. Any dividends or distributions so
paid over to the Trustee shall be held in trust for the Charitable Beneficiary.
The Prohibited Owner shall have no voting rights with respect to shares held in
the Charitable Trust and, subject to Maryland law, effective as of the date that
Equity Shares have been transferred to the Trustee, the Trustee shall have the
authority (at the Trustee's sole discretion) (i) to rescind as void any vote
cast by a Prohibited Owner prior to the discovery by the Trust that Equity
Shares have been transferred to the Trustee and (ii) to recast such vote in
accordance with the desires of the Trustee acting for the benefit of the
Charitable Beneficiary; provided, however, that if the Company has already taken
irreversible trust action, then the Trustee shall not have the authority to
rescind and recast such vote. Notwithstanding the provisions of this Article
VII, until the Trust has received notification that Equity Shares have been
transferred into a Charitable Trust, the Trust shall be entitled to rely on its
share transfer and other shareholder records for purposes of preparing lists of
shareholders entitled to vote at meetings, determining the validity and
authority of proxies and otherwise conducting votes of shareholders.
 
    Section 7.3.4  SALE OF SHARES BY TRUSTEE.  Within 20 days of receiving
notice from the Trust that Equity Shares have been transferred to the Charitable
Trust, the Trustee of the Charitable Trust shall sell the shares held in the
Charitable Trust to a person, designated by the Trustee, whose ownership of the
shares will not violate the ownership limitations set forth in Section 7.2.1(a).
Upon such sale, the interest of the Charitable Beneficiary in the shares sold
shall terminate and the Trustee shall distribute the net proceeds of the sale to
the Prohibited Owner and to the Charitable Beneficiary as provided in this
Section 7.3.4. The Prohibited Owner shall receive the lesser of (1) the price
paid by the Prohibited Owner for the shares or, if the Prohibited Owner did not
give value for the shares in connection with the event causing the shares to be
held in the Charitable Trust (e.g., in the case of a gift, devise or other such
transaction), the Market Price of the shares on the day of the event causing the
shares to be held in the Charitable Trust and (2) the price per share received
by the Trustee from the sale or other disposition of the shares held in the
 
                                      B-10
<PAGE>
Charitable Trust. Any net sales proceeds in excess of the amount payable to the
Prohibited Owner shall be immediately paid to the Charitable Beneficiary. If,
prior to the discovery by the Trust that Equity Shares have been transferred to
the Trustee, such shares are sold by a Prohibited Owner, then (i) such shares
shall be deemed to have been sold on behalf of the Charitable Trust and (ii) to
the extent that the Prohibited Owner received an amount for such shares that
exceeds the amount that such Prohibited Owner was entitled to receive pursuant
to this Section 7.3.4, such excess shall be paid to the Trustee upon demand.
 
    Section 7.3.5  PURCHASE RIGHT IN SHARES TRANSFERRED TO THE TRUSTEE.  Equity
Shares transferred to the Trustee shall be deemed to have been offered for sale
to the Trust, or its designee, at a price per share equal to the lesser of (i)
the price per share in the transaction that resulted in such transfer to the
Charitable Trust (or, in the case of a devise or gift, the Market Price at the
time of such devise or gift) and (ii) the Market Price on the date the Trust, or
its designee, accepts such offer. The Trust shall have the right to accept such
offer until the Trustee has sold the shares held in the Charitable Trust
pursuant to Section 7.3.4. Upon such a sale to the Trust, the interest of the
Charitable Beneficiary in the shares sold shall terminate and the Trustee shall
distribute the net proceeds of the sale to the Prohibited Owner.
 
    Section 7.3.6  DESIGNATION OF CHARITABLE BENEFICIARIES.  By written notice
to the Trustee, the Trust shall designate one or more nonprofit organizations to
be the Charitable Beneficiary of the interest in the Charitable Trust such that
(i) Equity Shares held in the Charitable Trust would not violate the
restrictions set forth in Section 7.2.1(a) in the hands of such Charitable
Beneficiary and (ii) each such organization must be described in Section
501(c)(3) of the Code and contributions to each such organization must be
eligible for deduction under each of Sections 170(b)(1)(A), 2055 and 2522 of the
Code.
 
    Section 7.4  NASDAQ-NM TRANSACTIONS.  Nothing in this Article VII shall
preclude the settlement of any transaction entered into through the facilities
of the Nasdaq-NM or any other national securities exchange or automated
inter-dealer quotation system. The fact that the settlement of any transaction
is so permitted shall not negate the effect of any other provision of this
Article VII and any transferee in such a transaction shall be subject to all of
the provisions and limitations set forth in this Article VII.
 
    Section 7.5  ENFORCEMENT.  The Trust is authorized specifically to seek
equitable relief, including injunctive relief, to enforce the provisions of this
Article VII.
 
    Section 7.6  NON-WAIVER.  No delay or failure on the part of the Trust or
the Board of Trustees in exercising any right hereunder shall operate as a
waiver of any right of the Trust or the Board of Trustees, as the case may be,
except to the extent specifically waived in writing.
 
                                  ARTICLE VIII
                                  SHAREHOLDERS
 
    Section 8.1  MEETINGS.  There shall be an annual meeting of the
shareholders, commencing with the calendar year 1999, to be held on proper
notice at such time (after the delivery of the annual report) and convenient
location as shall be determined by or in the manner prescribed in the Bylaws,
for the election of the Trustees, if required, and for the transaction of any
other business within the powers of the Trust. Except as otherwise provided in
the Declaration of Trust or as specifically required by law, special meetings of
shareholders may only be called in the manner provided in the Bylaws. If there
are no Trustees, the officers of the Trust shall promptly call a special meeting
of the shareholders entitled to vote for the election of successor Trustees. Any
meeting may be adjourned and reconvened as the Trustees determine or as provided
in the Bylaws.
 
    Section 8.2  VOTING RIGHTS.  Subject to the provisions of any class or
series of Shares then outstanding, the shareholders shall be entitled to vote
only on the following matters: (a) election of Trustees as provided in Section
5.2 and the removal of Trustees as provided in Section 5.3; (b) amendment of the
Declaration of Trust as provided in Article X; (c) termination of the Trust as
provided in Section 10.3;
 
                                      B-11
<PAGE>
(d) merger or consolidation of the Trust, or the sale or disposition of
substantially all of the Trust Property, as provided in Article XI; and (e) such
other matters with respect to which the Board of Trustees has adopted a
resolution declaring that a proposed action is advisable and directing that the
matter be submitted to the shareholders for approval or ratification. Except
with respect to the foregoing matters, no action taken by the shareholders at
any meeting or by consent shall in any way bind the Board of Trustees.
 
    Section 8.3  PREEMPTIVE AND APPRAISAL RIGHTS.  Except as may be provided by
the Board of Trustees in setting the terms of classified or reclassified Shares
pursuant to Section 6.4, no holder of Shares shall, as such holder, (a) have any
preemptive right to purchase or subscribe for any additional Shares of the Trust
or any other security of the Trust which it may issue or sell or (b), except as
expressly required by Title 8, have any right to require the Trust to pay him
the fair value of his Shares in an appraisal or similar proceeding.
 
    Section 8.4  EXTRAORDINARY ACTIONS.  Except as specifically provided in
Section 5.3 (relating to removal of Trustees), in Article X (relating to
amendments to this Declaration of Trust), in Article XI (relating to mergers,
consolidations or sales of trust property), and in Section 12.2 (relating to
termination of the Trust) and except for any deletion or modification of the
foregoing references in this Section 8.4, notwithstanding any provision of law
permitting or requiring any action to be taken or authorized by the affirmative
vote of the holders of a greater number of votes, any such action shall be
effective and valid if taken or authorized by the affirmative vote of holders of
Shares entitled to cast a majority of all the votes entitled to be cast on the
matter.
 
    Section 8.5  BOARD APPROVAL.  The submission of any action to the
shareholders for their consideration shall first be approved by the Board of
Trustees.
 
    Section 8.6  ACTION BY SHAREHOLDERS WITHOUT A MEETING.  The Bylaws of the
Trust may provide that any action required or permitted to be taken by the
shareholders may be taken without a meeting by the written consent of all
shareholders entitled to cast votes on the matter.
 
                                   ARTICLE IX
                     LIABILITY LIMITATION, INDEMNIFICATION
                        AND TRANSACTIONS WITH THE TRUST
 
    Section 9.1  LIMITATION OF SHAREHOLDER LIABILITY.  No shareholder shall be
liable for any debt, claim, demand, judgment or obligation of any kind of,
against or with respect to the Trust by reason of his being a shareholder, nor
shall any shareholder be subject to any personal liability whatsoever, in tort,
contract or otherwise, to any person in connection with the property or the
affairs of the Trust by reason of his being a shareholder.
 
    Section 9.2  LIMITATION OF TRUSTEE AND OFFICER LIABILITY.  To the maximum
extent that Maryland law in effect from time to time permits limitation of the
liability of trustees and officers of a real estate investment trust, no Trustee
or officer of the Trust shall be liable to the Trust or to any shareholder for
money damages. Neither the amendment nor repeal of this Section 9.2, nor the
adoption or amendment of any other provision of the Declaration of Trust
inconsistent with this Section 9.2, shall apply to or affect in any respect the
applicability of the preceding sentence with respect to any act or failure to
act which occurred prior to such amendment, repeal or adoption. In the absence
of any Maryland statute limiting the liability of trustees and officers of a
Maryland real estate investment trust for money damages in a suit by or on
behalf of the Trust or by any shareholder, no Trustee or officer of the Trust
shall be liable to the Trust or to any shareholder for money damages except to
the extent that (a) the Trustee or officer actually received an improper benefit
or profit in money, property, or services, for the amount of the benefit or
profit in money, property, or services actually received; or (b) a judgment or
other final adjudication adverse to the Trustee or officer is entered in a
proceeding based on a finding in the proceeding that the
 
                                      B-12
<PAGE>
Trustee's or officer's action or failure to act was the result of active and
deliberate dishonesty and was material to the cause of action adjudicated in the
proceeding.
 
    Section 9.3  INDEMNIFICATION.  The Trust shall have the power, to the
maximum extent permitted by Maryland law in effect from time to time, to
obligate itself to indemnify, and to pay or reimburse reasonable expenses in
advance of final disposition of a proceeding to, (a) any individual who is a
present or former shareholder, Trustee or officer of the Trust or (b) any
individual who, while a Trustee of the Trust and at the request of the Trust,
serves or has served as a director, officer, partner, trustee, employee or agent
of another real estate investment trust, corporation, partnership, joint
venture, trust, employee benefit plan or any other enterprise from and against
any claim or liability to which such person may become subject or which such
person may incur by reason of his status as a present or former shareholder,
Trustee or officer of the Trust. The Trust shall have the power, with the
approval of its Board of Trustees, to provide such indemnification and
advancement of expenses to a person who served a predecessor of the Trust in any
of the capacities described in (a) or (b) above and to any employee or agent of
the Trust or a predecessor of the Trust.
 
    Section 9.4  TRANSACTIONS BETWEEN THE TRUST AND ITS TRUSTEES, OFFICERS,
EMPLOYEES AND AGENTS.  Subject to any express restrictions in the Declaration of
Trust or adopted by the Trustees in the Bylaws or by resolution, the Trust may
enter into any contract or transaction of any kind with any person, including
any Trustee, officer, employee or agent of the Trust or any person affiliated
with a Trustee, officer, employee or agent of the Trust, whether or not any of
them has a financial interest in such transaction.
 
                                   ARTICLE X
                                   AMENDMENTS
 
    Section 10.1  GENERAL.  The Trust reserves the right from time to time to
make any amendment to the Declaration of Trust, now or hereafter authorized by
law, including any amendment altering the terms or contract rights, as expressly
set forth in the Declaration of Trust, of any Shares. All rights and powers
conferred by the Declaration of Trust on shareholders, Trustees and officers are
granted subject to this reservation. An amendment to the Declaration of Trust
(a) shall be signed and acknowledged by at least a majority of the Trustees, or
an officer duly authorized by at least a majority of the Trustees, (b) shall be
filed for record as provided in Section 13.5 and (c) shall become effective as
of the later of the time the SDAT accepts the amendment for record or the time
established in the amendment, not to exceed 30 days after the amendment is
accepted for record. All references to the Declaration of Trust shall include
all amendments thereto.
 
    Section 10.2  BY TRUSTEES.  The Trustees may amend the Declaration of Trust
from time to time, in the manner provided by Title 8, without any action by the
shareholders, to qualify as a real estate investment trust under the Code or
under Title 8 and as otherwise provided in the Declaration of Trust.
 
    Section 10.3  BY SHAREHOLDERS.  Except as otherwise provided in the
Declaration of Trust, any amendment to the Declaration of Trust shall be valid
only if approved by the affirmative vote of at least two-thirds of all the votes
entitled to be cast on the matter.
 
                                   ARTICLE XI
                MERGER, CONSOLIDATION OR SALE OF TRUST PROPERTY
 
    Subject to the provisions of any class or series of Shares at the time
outstanding, the Trust may (a) merge the Trust into another entity, (b)
consolidate the Trust with one or more other entities into a new entity or (c)
sell, lease, exchange or otherwise transfer all or substantially all of the
Trust Property. Any such action must be approved by the Board of Trustees and,
after notice to all shareholders entitled to vote on the matter, by the
affirmative vote of two-thirds of all the votes entitled to be cast on the
matter.
 
                                      B-13
<PAGE>
                                  ARTICLE XII
                       DURATION AND TERMINATION OF TRUST
 
    Section 12.1  DURATION.  The Trust shall continue perpetually unless
terminated pursuant to Section 12.2 or pursuant to any applicable provision of
Title 8.
 
    Section 12.2  TERMINATION.
 
    (a) Subject to the provisions of any class or series of Shares at the time
outstanding, the Trust may be terminated at any meeting of shareholders, by the
affirmative vote of two-thirds of all the votes entitled to be cast on the
matter. Upon the termination of the Trust:
 
    (i) The Trust shall carry on no business except for the purpose of winding
up its affairs.
 
    (ii) The Trustees shall proceed to wind up the affairs of the Trust and all
of the powers of the Trustees under the Declaration of Trust shall continue,
including the powers to fulfill or discharge the Trust's contracts, collect its
assets, sell, convey, assign, exchange, transfer or otherwise dispose of all or
any part of the remaining property of the Trust to one or more persons at public
or private sale for consideration which may consist in whole or in part of cash,
securities or other property of any kind, discharge or pay its liabilities and
do all other acts appropriate to liquidate its business.
 
    (iii) After paying or adequately providing for the payment of all
liabilities, and upon receipt of such releases, indemnities and agreements as
they deem necessary for their protection, the Trust may distribute the remaining
property of the Trust among the shareholders so that after payment in full or
the setting apart for payment of such preferential amounts, if any, to which the
holders of any Shares at the time outstanding shall be entitled, the remaining
property of the Trust shall, subject to any participating or similar rights of
Shares at the time outstanding, be distributed ratably among the holders of
Common Shares at the time outstanding.
 
    (b) After termination of the Trust, the liquidation of its business and the
distribution to the shareholders as herein provided, a majority of the Trustees
shall execute and file with the Trust's records a document certifying that the
Trust has been duly terminated, and the Trustees shall be discharged from all
liabilities and duties hereunder, and the rights and interests of all
shareholders shall cease.
 
                                  ARTICLE XIII
                                 MISCELLANEOUS
 
    Section 13.1  GOVERNING LAW.  The Declaration of Trust is executed by the
undersigned Trustees and delivered in the State of Maryland with reference to
the laws thereof, and the rights of all parties and the validity, construction
and effect of every provision hereof shall be subject to and construed according
to the laws of the State of Maryland without regard to conflicts of laws
provisions thereof.
 
    Section 13.2  RELIANCE BY THIRD PARTIES.  Any certificate shall be final and
conclusive as to any person dealing with the Trust if executed by the Secretary
or an Assistant Secretary of the Trust or a Trustee, and if certifying to: (a)
the number or identity of Trustees, officers of the Trust or shareholders; (b)
the due authorization of the execution of any document; (c) the action or vote
taken, and the existence of a quorum, at a meeting of the Board of Trustees or
shareholders; (d) a copy of the Declaration of Trust or of the Bylaws as a true
and complete copy as then in force; (e) an amendment to the Declaration of
Trust; (f) the termination of the Trust; or (g) the existence of any fact
relating to the affairs of the Trust. No purchaser, lender, transfer agent or
other person shall be bound to make any inquiry concerning the
 
                                      B-14
<PAGE>
validity of any transaction purporting to be made by the Trust on its behalf or
by any officer, employee or agent of the Trust.
 
    Section 13.3  SEVERABILITY.
 
    (a) The provisions of the Declaration of Trust are severable, and if the
Board of Trustees shall determine, with the advice of counsel, that any one or
more of such provisions (the "Conflicting Provisions") are in conflict with the
Code, Title 8 or other applicable federal or state laws, the Conflicting
Provisions, to the extent of the conflict, shall be deemed never to have
constituted a part of the Declaration of Trust, even without any amendment of
the Declaration of Trust pursuant to Article X and without affecting or
impairing any of the remaining provisions of the Declaration of Trust or
rendering invalid or improper any action taken or omitted prior to such
determination. No Trustee shall be liable for making or failing to make such a
determination. In the event of any such determination by the Board of Trustees,
the Board shall amend the Declaration of Trust in the manner provided in Section
10.2.
 
    (b) If any provision of the Declaration of Trust shall be held invalid or
unenforceable in any jurisdiction, such holding shall apply only to the extent
of any such invalidity or unenforceability and shall not in any manner affect,
impair or render invalid or unenforceable such provision in any other
jurisdiction or any other provision of the Declaration of Trust in any
jurisdiction.
 
    Section 13.4  CONSTRUCTION.  In the Declaration of Trust, unless the context
otherwise requires, words used in the singular or in the plural include both the
plural and singular and words denoting any gender include all genders. The title
and headings of different parts are inserted for convenience and shall not
affect the meaning, construction or effect of the Declaration of Trust. In
defining or interpreting the powers and duties of the Trust and its Trustees and
officers, reference may be made by the Trustees or officers, to the extent
appropriate and not inconsistent with the Code or Title 8, to Titles 1 through 3
of the Corporations and Associations Article of the Annotated Code of Maryland.
In furtherance and not in limitation of the foregoing, in accordance with the
provisions of Title 3, Subtitles 6 and 7, of the Corporations and Associations
Article of the Annotated Code of Maryland, the Trust shall be included within
the definition of "corporation" for purposes of such provisions.
 
    Section 13.5  RECORDATION.  The Declaration of Trust and any amendment
hereto shall be filed for record with the SDAT and may also be filed or recorded
in such other places as the Trustees deem appropriate, but failure to file for
record the Declaration of Trust or any amendment hereto in any office other than
in the State of Maryland shall not affect or impair the validity or
effectiveness of the Declaration of Trust or any amendment hereto. A restated
Declaration of Trust shall, upon filing, be conclusive evidence of all
amendments contained therein and may thereafter be referred to in lieu of the
original Declaration of Trust and the various amendments thereto.
 
    IN WITNESS WHEREOF, this Declaration of Trust has been signed on this 22nd
day of January, 1998 by the undersigned Trustee of the Trust, who acknowledges,
that this document is his act, and that to the best of his knowledge,
information, and belief, the matters and facts set forth herein are true in all
material respects and that the statement is made under the penalties for
perjury.
 
<TABLE>
<S>                             <C>  <C>
                                     -----------------------------------------
                                     Clay W. Hamlin, III
                                     Trustee
</TABLE>
 
                                      B-15
<PAGE>
                                                                      APPENDIX C
 
                                   BYLAWS OF
                       CORPORATE OFFICE PROPERTIES TRUST
                                 (THE "TRUST")
 
                                   ARTICLE I
 
                                    OFFICES
 
    Section 1.  PRINCIPAL OFFICE.  The principal office of the Trust shall be
located at such place or places as the Trustees may designate.
 
    Section 2.  ADDITIONAL OFFICES.  The Trust may have additional offices at
such places as the Board of Trustees may from time to time determine or the
business of the Trust may require.
 
                                   ARTICLE II
 
                            MEETINGS OF SHAREHOLDERS
 
    Section 1.  PLACE.  All meetings of shareholders shall be held at the
principal office of the Trust or at such other place within the United States as
shall be stated in the notice of the meeting.
 
    Section 2.  ANNUAL MEETING.  An annual meeting of the shareholders for the
election of Trustees and the transaction of any business within the powers of
the Trust shall be held within a reasonable period, but not less than 30 days,
following delivery of the annual report, referred to in Section 12 of this
Article II, but in any event within six months after the end of each full fiscal
year at a convenient location and on proper notice, on a date and at the time
set by the Trustees, beginning with the year 1999. Failure to hold an annual
meeting does not invalidate the Trust's existence or affect any otherwise valid
acts of the Trust.
 
    Section 3.  SPECIAL MEETINGS.  The chairman of the board or the president or
a majority of the Trustees may call special meetings of the shareholders.
Special meetings of shareholders shall also be called by the secretary upon the
written request of the holders of shares entitled to cast not less than a
majority of all the votes entitled to be cast at such meeting. Such request
shall state the purpose of such meeting and the matters proposed to be acted on
at such meeting. The secretary shall inform such shareholders of the reasonably
estimated cost of preparing and mailing notice of the meeting and, upon payment
by such shareholders to the Trust of such costs, the secretary shall give notice
to each shareholder entitled to notice of the meeting. Unless requested by
shareholders entitled to cast a majority of all the votes entitled to be cast at
such meeting, a special meeting need not be called to consider any matter which
is substantially the same as a matter voted on at any meeting of the
shareholders held during the preceding twelve months.
 
    Section 4.  NOTICE.  Not less than ten nor more than 90 days before each
meeting of shareholders, the secretary shall give to each shareholder entitled
to vote at such meeting and to each shareholder not entitled to vote who is
entitled to notice of the meeting written or printed notice stating the time and
place of the meeting and, in the case of a special meeting or as otherwise may
be required by any statute, the purpose for which the meeting is called, either
by mail or by presenting it to such shareholder personally or by leaving it at
his residence or usual place of business. If mailed, such notice shall be deemed
to be given when deposited in the United States mail addressed to the
shareholder at his post office address as it appears on the records of the
Trust, with postage thereon prepaid.
 
                                      C-1
<PAGE>
    Section 5.  SCOPE OF NOTICE.  Any business of the Trust may be transacted at
an annual meeting of shareholders without being specifically designated in the
notice, except such business as is required by any statute to be stated in such
notice. No business shall be transacted at a special meeting of shareholders
except as specifically designated in the notice.
 
    Section 6.  ORGANIZATION.  At every meeting of the shareholders, the
Chairman of the Board, if there be one, shall conduct the meeting or, in the
case of vacancy in office or absence of the Chairman of the Board, one of the
following officers present shall conduct the meeting in the order stated: the
Vice Chairman of the Board, if there be one, the President, the Vice Presidents
in their order of rank and seniority, or a Chairman chosen by the shareholders
entitled to cast a majority of the votes which all shareholders present in
person or by proxy are entitled to cast, shall act as Chairman, and the
Secretary, or, in his absence, an assistant secretary, or in the absence of both
the Secretary and assistant secretaries, a person appointed by the Chairman
shall act as Secretary.
 
    Section 7.  QUORUM.  At any meeting of shareholders, the presence in person
or by proxy of shareholders entitled to cast a majority of all the votes
entitled to be cast at such meeting shall constitute a quorum; but this section
shall not affect any requirement under any statute or the Declaration of Trust
for the vote necessary for the adoption of any measure. If, however, such quorum
shall not be present at any meeting of the shareholders, the shareholders
entitled to vote at such meeting, present in person or by proxy, shall have the
power to adjourn the meeting from time to time to a date not more than 120 days
after the original record date without notice other than announcement at the
meeting. At such adjourned meeting at which a quorum shall be present, any
business may be transacted which might have been transacted at the meeting as
originally notified.
 
    Section 8.  VOTING.  A plurality of all the votes cast at a meeting of
shareholders duly called and at which a quorum is present shall be sufficient to
elect a Trustee. Each share may be voted for as many individuals as there are
Trustees to be elected and for whose election the share is entitled to be voted.
A majority of the votes cast at a meeting of shareholders duly called and at
which a quorum is present shall be sufficient to approve any other matter which
may properly come before the meeting, unless more than a majority of the votes
cast is required herein or by statute or by the Declaration of Trust. Unless
otherwise provided in the Declaration of Trust, each outstanding share,
regardless of class, shall be entitled to one vote on each matter submitted to a
vote at a meeting of shareholders.
 
    Section 9.  PROXIES.  A shareholder may cast the votes entitled to be cast
by the shares owned of record by him either in person or by proxy executed in
writing by the shareholder or by his duly authorized agent. Such proxy shall be
filed with the secretary of the Trust before or at the time of the meeting. No
proxy shall be valid after eleven months from the date of its execution, unless
otherwise provided in the proxy.
 
    Section 10.  VOTING OF SHARES BY CERTAIN HOLDERS.  Shares of the Trust
registered in the name of a corporation, partnership, trust or other entity, if
entitled to be voted, may be voted by the president or a vice president, a
general partner or trustee thereof, as the case may be, or a proxy appointed by
any of the foregoing individuals, unless some other person who has been
appointed to vote such shares pursuant to a bylaw or a resolution of the
governing board of such corporation or other entity or agreement of the partners
of the partnership presents a certified copy of such bylaw, resolution or
agreement, in which case such person may vote such shares. Any trustee or other
fiduciary may vote shares registered in his name as such fiduciary, either in
person or by proxy.
 
    Shares of the Trust directly or indirectly owned by it shall not be voted at
any meeting and shall not be counted in determining the total number of
outstanding shares entitled to be voted at any given time, unless they are held
by it in a fiduciary capacity, in which case they may be voted and shall be
counted in determining the total number of outstanding shares at any given time.
 
                                      C-2
<PAGE>
    The Trustees may adopt by resolution a procedure by which a shareholder may
certify in writing to the Trust that any shares registered in the name of the
shareholder are held for the account of a specified person other than the
shareholder. The resolution shall set forth the class of shareholders who may
make the certification, the purpose for which the certification may be made, the
form of certification and the information to be contained in it; if the
certification is with respect to a record date or closing of the share transfer
books, the time after the record date or closing of the share transfer books
within which the certification must be received by the Trust; and any other
provisions with respect to the procedure which the Trustees consider necessary
or desirable. On receipt of such certification, the person specified in the
certification shall be regarded as, for the purposes set forth in the
certification, the shareholder of record of the specified shares in place of the
shareholder who makes the certification.
 
    Notwithstanding any other provision contained herein or in the Declaration
of Trust or these Bylaws, Title 3, Subtitle 7 of the Corporations and
Associations Article of the Annotated Code of Maryland (or any successor
statute) shall not apply to any acquisition by any person of shares of
beneficial interest of the Trust. This section may be repealed, in whole or in
part, at any time, whether before or after an acquisition of control shares and,
upon such repeal, may, to the extent provided by any successor bylaw, apply to
any prior or subsequent control share acquisition.
 
    Section 11.  INSPECTORS.  At any meeting of shareholders, the chairman of
the meeting may appoint one or more persons as inspectors for such meeting. Such
inspectors shall ascertain and report the number of shares represented at the
meeting based upon their determination of the validity and effect of proxies,
count all votes, report the results and perform such other acts as are proper to
conduct the election and voting with impartiality and fairness to all the
shareholders.
 
    Each report of an inspector shall be in writing and signed by him or by a
majority of them if there is more than one inspector acting at such meeting. If
there is more than one inspector, the report of a majority shall be the report
of the inspectors. The report of the inspector or inspectors on the number of
shares represented at the meeting and the results of the voting shall be PRIMA
FACIE evidence thereof.
 
    Section 12.  REPORTS TO SHAREHOLDERS.
 
    The Trustees shall submit to the shareholders at or before the annual
meeting of shareholders a report of the business and operations of the Trust
during such fiscal year, containing a balance sheet and a statement of income
and surplus of the Trust, accompanied by the certification of an independent
certified public accountant, and such further information as the Trustees may
determine is required pursuant to any law or regulation to which the Trust is
subject. Within the earlier of 20 days after the annual meeting of shareholders
or 120 days after the end of the fiscal year of the Trust, the Trustees shall
place the annual report on file at the principal office of the Trust and with
any governmental agencies as may be required by law and as the Trustees may deem
appropriate.
 
    Section 13.  NOMINATIONS AND PROPOSALS BY SHAREHOLDERS.
 
    (a)  ANNUAL MEETINGS OF SHAREHOLDERS.  (1) Nominations of persons for
election to the Board of Trustees and the proposal of business to be considered
by the shareholders may be made at an annual meeting of shareholders (i)
pursuant to the Trust's notice of meeting, (ii) by or at the direction of the
Trustees or (iii) by any shareholder of the Trust who was a shareholder of
record both at the time of giving of notice provided for in this Section 13(a)
and at the time of the annual meeting, who is entitled to vote at the meeting
and who complied with the notice procedures set forth in this Section 13(a).
 
        (2) For nominations or other business to be properly brought before an
annual meeting by a shareholder pursuant to clause (iii) of paragraph (a) (1) of
this Section 13, the shareholder must have given timely notice thereof in
writing to the secretary of the Trust and such other business must otherwise be
a proper matter for action by shareholders. To be timely, a shareholder's notice
shall be delivered to the secretary at the principal executive offices of the
Trust not later than the close of business on the 60th day nor earlier than the
close of business on the 90th day prior to the first anniversary of the
preceding year's
 
                                      C-3
<PAGE>
annual meeting; provided, however, that in the event that the date of the annual
meeting is advanced by more than 30 days or delayed by more than 60 days from
such anniversary date or if the Trust has not previously held an annual meeting,
notice by the shareholder to be timely must be so delivered not earlier than the
close of business on the 90th day prior to such annual meeting and not later
than the close of business on the later of the 60th day prior to such annual
meeting or the tenth day following the day on which public announcement of the
date of such meeting is first made by the Trust. In no event shall the public
announcement of a postponement or adjournment of an annual meeting to a later
date or time commence a new time period for the giving of a shareholder's notice
as described above. Such shareholder's notice shall set forth (i) as to each
person whom the shareholder proposes to nominate for election or reelection as a
Trustee all information relating to such person that is required to be disclosed
in solicitations of proxies for election of Trustees in an election contest, or
is otherwise required, in each case pursuant to Regulation 14A under the
Securities Exchange Act of 1934, as amended (the "Exchange Act") (including such
person's written consent to being named in the proxy statement as a nominee and
to serving as a Trustee if elected); (ii) as to any other business that the
shareholder proposes to bring before the meeting, a brief description of the
business desired to be brought before the meeting, the reasons for conducting
such business at the meeting and any material interest in such business of such
shareholder and of the beneficial owner, if any, on whose behalf the proposal is
made; and (iii) as to the shareholder giving the notice and the beneficial
owner, if any, on whose behalf the nomination or proposal is made, (x) the name
and address of such shareholder, as they appear on the Trust's books, and of
such beneficial owner and (y) the number of each class of shares of the Trust
which are owned beneficially and of record by such shareholder and such
beneficial owner.
 
        (3) Notwithstanding anything in the second sentence of paragraph (a) (2)
of this Section 13 to the contrary, in the event that the number of Trustees to
be elected to the Board of Trustees is increased and there is no public
announcement by the Trust naming all of the nominees for Trustee or specifying
the size of the increased Board of Trustees at least 70 days prior to the first
anniversary of the preceding year's annual meeting, a shareholder's notice
required by this Section 13(a) shall also be considered timely, but only with
respect to nominees for any new positions created by such increase, if it shall
be delivered to the secretary at the principal executive offices of the Trust
not later than the close of business on the tenth day following the day on which
such public announcement is first made by the Trust.
 
    (b)  SPECIAL MEETINGS OF SHAREHOLDERS.  Only such business shall be
conducted at a special meeting of shareholders as shall have been brought before
the meeting pursuant to the Trust's notice of meeting. Nominations of persons
for election to the Board of Trustees may be made at a special meeting of
shareholders at which Trustees are to be elected (i) pursuant to the Trust's
notice of meeting, (ii) by or at the direction of the Board of Trustees or (iii)
provided that the Board of Trustees has determined that Trustees shall be
elected at such special meeting, by any shareholder of the Trust who was a
shareholder of record both at the time of giving of notice provided for in this
Section 13(b) and at the time of the special meeting, who is entitled to vote at
the meeting and who complied with the notice procedures set forth in this
Section 13(b). In the event the Trust calls a special meeting of shareholders
for the purpose of electing one or more Trustees to the Board of Trustees, any
such shareholder may nominate a person or persons (as the case may be) for
election to such position as specified in the Trust's notice of meeting, if the
shareholder's notice containing the information required by paragraph (a) (2) of
this Section 13 shall be delivered to the secretary at the principal executive
offices of the Trust not earlier than the close of business on the 90th day
prior to such special meeting and not later than the close of business on the
later of the 60th day prior to such special meeting or the tenth day following
the day on which public announcement is first made of the date of the special
meeting and of the nominees proposed by the Trustees to be elected at such
meeting. In no event shall the public announcement of a postponement or
adjournment of a special meeting to a later date or time commence a new time
period for the giving of a shareholder's notice as described above.
 
                                      C-4
<PAGE>
    (c)  GENERAL.  (1) Only such persons who are nominated in accordance with
the procedures set forth in this Section 13 shall be eligible to serve as
Trustees and only such business shall be conducted at a meeting of shareholders
as shall have been brought before the meeting in accordance with the procedures
set forth in this Section 13. The chairman of the meeting shall have the power
and duty to determine whether a nomination or any business proposed to be
brought before the meeting was made or proposed, as the case may be, in
accordance with the procedures set forth in this Section 13 and, if any proposed
nomination or business is not in compliance with this Section 13, to declare
that such nomination or proposal shall be disregarded.
 
        (2) For purposes of this Section 13, "public announcement" shall mean
disclosure in a press release reported by the Dow Jones News Service, Associated
Press or comparable news service or in a document publicly filed by the Trust
with the Securities and Exchange Commission pursuant to Section 13, 14 or 15(d)
of the Exchange Act.
 
        (3) Notwithstanding the foregoing provisions of this Section 13, a
shareholder shall also comply with all applicable requirements of state law and
of the Exchange Act and the rules and regulations thereunder with respect to the
matters set forth in this Section 13. Nothing in this Section 13 shall be deemed
to affect any rights of shareholders to request inclusion of proposals in the
Trust's proxy statement pursuant to Rule 14a-8 under the Exchange Act.
 
    Section 14.  INFORMAL ACTION BY SHAREHOLDERS.  Any action required or
permitted to be taken at a meeting of shareholders may be taken without a
meeting if a consent in writing, setting forth such action, is signed by each
shareholder entitled to vote on the matter and any other shareholder entitled to
notice of a meeting of shareholders (but not to vote thereat) has waived in
writing any right to dissent from such action, and such consent and waiver are
filed with the minutes of proceedings of the shareholders.
 
    Section 15.  VOTING BY BALLOT.  Voting on any question or in any election
may be VIVA VOCE unless the presiding officer shall order or any shareholder
shall demand that voting be by ballot.
 
                                  ARTICLE III
 
                                    TRUSTEES
 
    Section 1.  GENERAL POWERS; QUALIFICATIONS; TRUSTEES HOLDING OVER.  The
business and affairs of the Trust shall be managed under the direction of its
Board of Trustees. A Trustee shall be an individual at least 21 years of age who
is not under legal disability. In case of failure to elect Trustees at an annual
meeting of the shareholders, the Trustees holding over shall continue to direct
the management of the business and affairs of the Trust until their successors
are elected and qualify.
 
    Section 2.  NUMBER.  At any regular meeting or at any special meeting called
for that purpose, a majority of the entire Board of Trustees may establish,
increase or decrease the number of Trustees and may be classified into any class
as provided for by the Declaration of Trust.
 
    Section 3.  ANNUAL AND REGULAR MEETINGS.  An annual meeting of the Trustees
shall be held immediately after and at the same place as the annual meeting of
shareholders, no notice other than this Bylaw being necessary. The Trustees may
provide, by resolution, the time and place, either within or without the State
of Maryland, for the holding of regular meetings of the Trustees without other
notice than such resolution.
 
    Section 4.  SPECIAL MEETINGS.  Special meetings of the Trustees may be
called by or at the request of the chairman of the board or the president or by
a majority of the Trustees then in office. The person or persons authorized to
call special meetings of the Trustees may fix any place, either within or
without the State of Maryland, as the place for holding any special meeting of
the Trustees called by them.
 
                                      C-5
<PAGE>
    Section 5.  NOTICE.  Notice of any special meeting shall be given by written
notice delivered personally, telegraphed, facsimile-transmitted or mailed to
each Trustee at his business or residence address. Personally delivered or
telegraphed notices shall be given at least two days prior to the meeting.
Notice by mail shall be given at least five days prior to the meeting. Telephone
or facsimile-transmission notice shall be given at least 24 hours prior to the
meeting. If mailed, such notice shall be deemed to be given when deposited in
the United States mail properly addressed, with postage thereon prepaid. If
given by telegram, such notice shall be deemed to be given when the telegram is
delivered to the telegraph company. Telephone notice shall be deemed given when
the Trustee is personally given such notice in a telephone call to which he is a
party. Facsimile-transmission notice shall be deemed given upon completion of
the transmission of the message to the number given to the Trust by the Trustee
and receipt of a completed answer-back indicating receipt. Neither the business
to be transacted at, nor the purpose of, any annual, regular or special meeting
of the Trustees need be stated in the notice, unless specifically required by
statute or these Bylaws.
 
    Section 6.  QUORUM.  A majority of the Trustees shall constitute a quorum
for transaction of business at any meeting of the Trustees, provided that, if
less than a majority of such Trustees are present at said meeting, a majority of
the Trustees present may adjourn the meeting from time to time without further
notice, and provided further that if, pursuant to the Declaration of Trust or
these Bylaws, the vote of a majority of a particular group of Trustees is
required for action, a quorum must also include a majority of such group.
 
    The Trustees present at a meeting which has been duly called and convened
may continue to transact business until adjournment, notwithstanding the
withdrawal of enough Trustees to leave less than a quorum.
 
    Section 7.  VOTING.  The action of the majority of the Trustees present at a
meeting at which a quorum is present shall be the action of the Trustees, unless
the concurrence of a greater proportion is required for such action by
applicable statute.
 
    Section 8.  TELEPHONE MEETINGS.  Trustees may participate in a meeting by
means of a conference telephone or similar communications equipment if all
persons participating in the meeting can hear each other at the same time.
Participation in a meeting by these means shall constitute presence in person at
the meeting.
 
    Section 9.  INFORMAL ACTION BY TRUSTEES.  Any action required or permitted
to be taken at any meeting of the Trustees may be taken without a meeting, if a
consent in writing to such action is signed by each Trustee and such written
consent is filed with the minutes of proceedings of the Trustees.
 
    Section 10.  VACANCIES.  If for any reason any or all the Trustees cease to
be Trustees, such event shall not terminate the Trust or affect these Bylaws or
the powers of the remaining Trustees hereunder (even if fewer than two Trustees
remain). Any vacancy (including a vacancy created by an increase in the number
of Trustees) shall be filled, at any regular meeting or at any special meeting
called for that purpose, by a majority of the Trustees. Any individual so
elected as Trustee shall hold office for the unexpired term of the Trustee he is
replacing.
 
    Section 11.  COMPENSATION; FINANCIAL ASSISTANCE.
 
    (a)  COMPENSATION.  Trustees shall not receive any stated salary for their
services as Trustees but, by resolution of the Trustees, may receive
compensation per year and/or per meeting and/or per visit to real property owned
or to be acquired by the Trust and for any service or activity they performed or
engaged in as Trustees. Trustees may be reimbursed for expenses of attendance,
if any, at each annual, regular or special meeting of the Trustees or of any
committee thereof; and for their expenses, if any, in connection with each
property visit and any other service or activity performed or engaged in as
Trustees; but nothing herein contained shall be construed to preclude any
Trustees from serving the Trust in any other capacity and receiving compensation
therefor.
 
                                      C-6
<PAGE>
    (b)  FINANCIAL ASSISTANCE TO TRUSTEES.  The Trust may lend money to,
guarantee an obligation of or otherwise assist a Trustee or a trustee of its
direct or indirect subsidiary. The loan, guarantee or other assistance may be
with or without interest, unsecured, or secured in any manner that the Board of
Trustees approves, including a pledge of Shares.
 
    Section 12.  REMOVAL OF TRUSTEES.  The shareholders may, at any time, remove
any Trustee only in the manner provided in the Declaration of Trust.
 
    Section 13.  LOSS OF DEPOSITS.  No Trustee shall be liable for any loss
which may occur by reason of the failure of the bank, trust company, savings and
loan association, or other institution with whom moneys or shares have been
deposited.
 
    Section 14.  SURETY BONDS.  Unless required by law, no Trustee shall be
obligated to give any bond or surety or other security for the performance of
any of his duties.
 
    Section 15.  RELIANCE.  Each Trustee, officer, employee and agent of the
Trust shall, in the performance of his or her duties with respect to the Trust,
be fully justified and protected with regard to any act or failure to act in
reliance in good faith upon the books of account or other records of the Trust,
upon an opinion of counsel or upon reports made to the Trust by any of its
officers or employees or by the adviser, accountants, appraisers or other
experts or consultants selected by the Trustees or officers of the Trust,
regardless of whether such counsel or expert may also be a Trustee.
 
    Section 16.  INTERESTED TRUSTEE TRANSACTIONS.  Section 2-419 of the Maryland
General Corporation Law (the "MGCL") shall be available for and apply to any
contract or other transaction between the Trust and any of its Trustees or
between the Trust and any other trust, corporation, firm or other entity in
which any of its Trustees is a trustee or director or has a material financial
interest.
 
    Section 17.  CERTAIN RIGHTS OF TRUSTEES, OFFICERS, EMPLOYEES AND
AGENTS.  The Trustees shall have no responsibility to devote their full time to
the affairs of the Trust. Any Trustee or officer, employee or agent of the Trust
(other than a full-time officer, employee or agent of the Trust), in his
personal capacity or in a capacity as an affiliate, employee, or agent of any
other person, or otherwise, may have business interests and engage in business
activities similar or in addition to those of or relating to the Trust.
 
                                   ARTICLE IV
 
                                   COMMITTEES
 
    Section 1.  NUMBER, TENURE AND QUALIFICATIONS.  The Trustees may appoint
from among its members an Executive Committee, an Audit Committee, a
Compensation Committee and other committees, composed of one or more Trustees,
to serve at the pleasure of the Trustees.
 
    Section 2.  POWERS.  The Trustees may delegate to committees appointed under
Section 1 of this Article any of the powers of the Trustees, except as
prohibited by law.
 
    Section 3.  MEETINGS.  In the absence of any member of any such committee,
the members thereof present at any meeting, whether or not they constitute a
quorum, may appoint another Trustee to act in the place of such absent member.
Notice of committee meetings shall be given in the same manner as notice for
special meetings of the Board of Trustees.
 
    One-third, but not less than two (if there are two or more members of the
committee), of the members of any committee shall be present in person at any
meeting of such committee in order to constitute a quorum for the transaction of
business at such meeting, and the act of a majority present shall be the act of
such committee. The Board of Trustees may designate a chairman of any committee,
and such chairman or any two (if there are two or more members of the committee)
members of any committee may
 
                                      C-7
<PAGE>
fix the time and place of its meetings unless the Board shall otherwise provide.
In the absence or disqualification of any member of any such committee, the
members thereof present at any meeting and not disqualified from voting, whether
or not they constitute a quorum, may unanimously appoint another Trustee to act
at the meeting in the place of such absent or disqualified members.
 
    Each committee shall keep minutes of its proceedings and shall report the
same to the Board of Trustees at the next succeeding meeting, and any action by
the committee shall be subject to revision and alteration by the Board of
Trustees, provided that no rights of third persons shall be affected by any such
revision or alteration.
 
    Section 4.  TELEPHONE MEETINGS.  Members of a committee of the Trustees may
participate in a meeting by means of a conference telephone or similar
communications equipment if all persons participating in the meeting can hear
each other at the same time. Participation in a meeting by these means shall
constitute presence in person at the meeting.
 
    Section 5.  INFORMAL ACTION BY COMMITTEES.  Any action required or permitted
to be taken at any meeting of a committee of the Trustees may be taken without a
meeting, if a consent in writing to such action is signed by each member of the
committee and such written consent is filed with the minutes of proceedings of
such committee.
 
    Section 6.  VACANCIES.  Subject to the provisions hereof, the Board of
Trustees shall have the power at any time to change the membership of any
committee, to fill all vacancies, to designate alternate members to replace any
absent or disqualified member or to dissolve any such committee.
 
                                   ARTICLE V
 
                                    OFFICERS
 
    Section 1.  GENERAL PROVISIONS.  The officers of the Trust shall include a
president, a secretary and a treasurer and may include a chairman of the board,
a vice chairman of the board, a chief executive officer, a chief operating
officer, a chief financial officer, one or more vice presidents, one or more
assistant secretaries and one or more assistant treasurers. In addition, the
Trustees may from time to time appoint such other officers with such powers and
duties as they shall deem necessary or desirable. The officers of the Trust
shall be elected by the Trustees. Each officer shall hold office until his
successor is elected and qualifies or until his death, resignation or removal in
the manner hereinafter provided. Any two or more offices except president and
vice president may be held by the same person. In their discretion, the Trustees
may leave unfilled any office except that of president and secretary. Election
of an officer or agent shall not of itself create contract rights between the
Trust and such officer or agent.
 
    Section 2.  REMOVAL AND RESIGNATION.  Any officer or agent of the Trust may
be removed by the Trustees if in their judgment the best interests of the Trust
would be served thereby, but such removal shall be without prejudice to the
contract rights, if any, of the person so removed. Any officer of the Trust may
resign at any time by giving written notice of his resignation to the Trustees,
the chairman of the board, the president or the secretary. Any resignation shall
take effect at any time subsequent to the time specified therein or, if the time
when it shall become effective is not specified therein, immediately upon its
receipt. The acceptance of a resignation shall not be necessary to make it
effective unless otherwise stated in the resignation. Such resignation shall be
without prejudice to the contract rights, if any, of the Trust.
 
    Section 3.  VACANCIES.  A vacancy in any office may be filled by the
Trustees for the balance of the term.
 
    Section 4.  CHIEF EXECUTIVE OFFICER.  The Trustees may designate a chief
executive officer from among the elected officers. The chief executive officer
shall have responsibility for implementation of the policies of the Trust, as
determined by the Trustees, and for the administration of the business affairs
of
 
                                      C-8
<PAGE>
the Trust. In the absence of both the chairman and vice chairman of the board,
the chief executive officer shall preside over the meetings of the Trustees and
of the shareholders at which he shall be present.
 
    Section 5.  CHIEF OPERATING OFFICER.  The Trustees may designate a chief
operating officer from among the elected officers. Said officer will have the
responsibilities and duties as set forth by the Trustees or the chief executive
officer.
 
    Section 6.  CHIEF FINANCIAL OFFICER.  The Trustees may designate a chief
financial officer from among the elected officers. Said officer will have the
responsibilities and duties as set forth by the Trustees or the chief executive
officer.
 
    Section 7.  CHAIRMAN AND VICE CHAIRMAN OF THE BOARD.  The chairman of the
board shall preside over the meetings of the Trustees and of the shareholders at
which he shall be present and shall in general oversee all of the business and
affairs of the Trust. In the absence of the chairman of the board, the vice
chairman of the board shall preside at such meetings at which he shall be
present. The chairman and the vice chairman of the board may execute any deed,
mortgage, bond, contract or other instrument, except in cases where the
execution thereof shall be expressly delegated by the Trustees or by these
Bylaws to some other officer or agent of the Trust or shall be required by law
to be otherwise executed. The chairman of the board and the vice chairman of the
board shall perform such other duties as may be assigned to him or them by the
Trustees.
 
    Section 8.  PRESIDENT.  In the absence of the chairman, the vice chairman of
the board and the chief executive officer, the president shall preside over the
meetings of the Trustees and of the shareholders at which he shall be present.
In the absence of a designation of a chief executive officer by the Trustees,
the president shall be the chief executive officer and shall be ex officio a
member of all committees that may, from time to time, be constituted by the
Trustees. The president may execute any deed, mortgage, bond, contract or other
instrument, except in cases where the execution thereof shall be expressly
delegated by the Trustees or by these Bylaws to some other officer or agent of
the Trust or shall be required by law to be otherwise executed; and in general
shall perform all duties incident to the office of president and such other
duties as may be prescribed by the Trustees from time to time.
 
    Section 9.  VICE PRESIDENTS.  In the absence of the president or in the
event of a vacancy in such office, the vice president (or in the event there be
more than one vice president, the vice presidents in the order designated at the
time of their election or, in the absence of any designation, then in the order
of their election) shall perform the duties of the president and when so acting
shall have all the powers of and be subject to all the restrictions upon the
president; and shall perform such other duties as from time to time may be
assigned to him by the president or by the Trustees. The Trustees may designate
one or more vice presidents as executive vice president or as vice president for
particular areas of responsibility.
 
    Section 10.  SECRETARY.  The secretary shall (a) keep the minutes of the
proceedings of the shareholders, the Trustees and committees of the Trustees in
one or more books provided for that purpose; (b) see that all notices are duly
given in accordance with the provisions of these Bylaws or as required by law;
(c) be custodian of the trust records and of the seal of the Trust; (d) keep a
register of the post office address of each shareholder which shall be furnished
to the secretary by such shareholder; (e) have general charge of the share
transfer books of the Trust; and (f) in general perform such other duties as
from time to time may be assigned to him by the chief executive officer, the
president or by the Trustees.
 
    Section 11.  TREASURER.  The treasurer shall have the custody of the funds
and securities of the Trust and shall keep full and accurate accounts of
receipts and disbursements in books belonging to the Trust and shall deposit all
moneys and other valuable effects in the name and to the credit of the Trust in
such depositories as may be designated by the Trustees.
 
    The treasurer shall disburse the funds of the Trust as may be ordered by the
Trustees, taking proper vouchers for such disbursements, and shall render to the
president and Trustees, at the regular meetings of
 
                                      C-9
<PAGE>
the Trustees or whenever they may require it, an account of all his transactions
as treasurer and of the financial condition of the Trust.
 
    If required by the Trustees, the treasurer shall give the Trust a bond in
such sum and with such surety or sureties as shall be satisfactory to the
Trustees for the faithful performance of the duties of his office and for the
restoration to the Trust, in case of his death, resignation, retirement or
removal from office, of all books, papers, vouchers, moneys and other property
of whatever kind in his possession or under his control belonging to the Trust.
 
    Section 12.  ASSISTANT SECRETARIES AND ASSISTANT TREASURERS.  The assistant
secretaries and assistant treasurers, in general, shall perform such duties as
shall be assigned to them by the secretary or treasurer, respectively, or by the
president or the Trustees. The assistant treasurers shall, if required by the
Trustees, give bonds for the faithful performance of their duties in such sums
and with such surety or sureties as shall be satisfactory to the Trustees.
 
    Section 13.  SALARIES.  The salaries and other compensation of the officers
shall be fixed from time to time by the Trustees and no officer shall be
prevented from receiving such salary or other compensation by reason of the fact
that he is also a Trustee.
 
                                   ARTICLE VI
 
                     CONTRACTS, LOANS, CHECKS AND DEPOSITS
 
    Section 1.  CONTRACTS.  The Trustees may authorize any officer or agent to
enter into any contract or to execute and deliver any instrument in the name of
and on behalf of the Trust and such authority may be general or confined to
specific instances. Any agreement, deed, mortgage, lease or other document
executed by one or more of the Trustees or by an authorized person shall be
valid and binding upon the Trustees and upon the Trust when authorized or
ratified by action of the Trustees.
 
    Section 2.  CHECKS AND DRAFTS.  All checks, drafts or other orders for the
payment of money, notes or other evidences of indebtedness issued in the name of
the Trust shall be signed by such officer or agent of the Trust in such manner
as shall from time to time be determined by the Trustees.
 
    Section 3.  DEPOSITS.  All funds of the Trust not otherwise employed shall
be deposited from time to time to the credit of the Trust in such banks, trust
companies or other depositories as the Trustees may designate.
 
                                  ARTICLE VII
 
                                     SHARES
 
    Section 1.  CERTIFICATES.  Each shareholder shall be entitled to a
certificate or certificates which shall represent and certify the number of
shares of each class of beneficial interests held by him in the Trust. Each
certificate shall be signed by the chief executive officer, the president or a
vice president and countersigned by the secretary or an assistant secretary or
the treasurer or an assistant treasurer and may be sealed with the seal, if any,
of the Trust. The signatures may be either manual or facsimile. Certificates
shall be consecutively numbered; and if the Trust shall, from time to time,
issue several classes of shares, each class may have its own number series. A
certificate is valid and may be issued whether or not an officer who signed it
is still an officer when it is issued. Each certificate representing shares
which are restricted as to their transferability or voting powers, which are
preferred or limited as to their dividends or as to their allocable portion of
the assets upon liquidation or which are redeemable at the option of the Trust,
shall have a statement of such restriction, limitation, preference or redemption
provision, or a
 
                                      C-10
<PAGE>
summary thereof, plainly stated on the certificate. In lieu of such statement or
summary, the Trust may set forth upon the face or back of the certificate a
statement that the Trust will furnish to any shareholder, upon request and
without charge, a full statement of such information.
 
    Section 2.  TRANSFERS.  Certificates shall be treated as negotiable and
title thereto and to the shares they represent shall be transferred by delivery
thereof to the same extent as those of a Maryland stock corporation. Upon
surrender to the Trust or the transfer agent of the Trust of a share certificate
duly endorsed or accompanied by proper evidence of succession, assignment or
authority to transfer, the Trust shall issue a new certificate to the person
entitled thereto, cancel the old certificate and record the transaction upon its
books.
 
    The Trust shall be entitled to treat the holder of record of any share or
shares as the holder in fact thereof and, accordingly, shall not be bound to
recognize any equitable or other claim to or interest in such share or shares on
the part of any other person, whether or not it shall have express or other
notice thereof, except as otherwise provided by the laws of the State of
Maryland.
 
    Notwithstanding the foregoing, transfers of shares of beneficial interest of
the Trust will be subject in all respects to the Declaration of Trust and all of
the terms and conditions contained therein.
 
    Section 3.  REPLACEMENT CERTIFICATE.  Any officer designated by the Trustees
may direct a new certificate to be issued in place of any certificate previously
issued by the Trust alleged to have been lost, stolen or destroyed upon the
making of an affidavit of that fact by the person claiming the certificate to be
lost, stolen or destroyed. When authorizing the issuance of a new certificate,
an officer designated by the Trustees may, in his discretion and as a condition
precedent to the issuance thereof, require the owner of such lost, stolen or
destroyed certificate or the owner's legal representative to advertise the same
in such manner as he shall require and/or to give bond, with sufficient surety,
to the Trust to indemnify it against any loss or claim which may arise as a
result of the issuance of a new certificate.
 
    Section 4.  CLOSING OF TRANSFER BOOKS OR FIXING OF RECORD DATE.  The
Trustees may set, in advance, a record date for the purpose of determining
shareholders entitled to notice of or to vote at any meeting of shareholders or
determining shareholders entitled to receive payment of any dividend or the
allotment of any other rights, or in order to make a determination of
shareholders for any other proper purpose. Such date, in any case, shall not be
prior to the close of business on the day the record date is fixed and shall be
not more than 90 days and, in the case of a meeting of shareholders not less
than ten days, before the date on which the meeting or particular action
requiring such determination of shareholders of record is to be held or taken.
 
    In lieu of fixing a record date, the Trustees may provide that the share
transfer books shall be closed for a stated period but not longer than 20 days.
If the share transfer books are closed for the purpose of determining
shareholders entitled to notice of or to vote at a meeting of shareholders, such
books shall be closed for at least ten days before the date of such meeting.
 
    If no record date is fixed and the share transfer books are not closed for
the determination of shareholders, (a) the record date for the determination of
shareholders entitled to notice of or to vote at a meeting of shareholders shall
be at the close of business on the day on which the notice of meeting is mailed
or the 30th day before the meeting, whichever is the closer date to the meeting;
and (b) the record date for the determination of shareholders entitled to
receive payment of a dividend or an allotment of any other rights shall be the
close of business on the day on which the resolution of the Trustees, declaring
the dividend or allotment of rights, is adopted.
 
    When a determination of shareholders entitled to vote at any meeting of
shareholders has been made as provided in this section, such determination shall
apply to any adjournment thereof, except when (i) the determination has been
made through the closing of the transfer books and the stated period of closing
has expired or (ii) the meeting is adjourned to a date more than 120 days after
the record date fixed for the original meeting, in either of which case a new
record date shall be determined as set forth herein.
 
                                      C-11
<PAGE>
    Section 5.  STOCK LEDGER.  The Trust shall maintain at its principal office
or at the office of its counsel, accountants or transfer agent, an original or
duplicate share ledger containing the name and address of each shareholder and
the number of shares of each class held by such shareholder.
 
    Section 6.  FRACTIONAL SHARES; ISSUANCE OF UNITS.  The Trustees may issue
fractional shares or provide for the issuance of scrip, all on such terms and
under such conditions as they may determine. Notwithstanding any other provision
of the Declaration of Trust or these Bylaws, the Trustees may issue units
consisting of different securities of the Trust. Any security issued in a unit
shall have the same characteristics as any identical securities issued by the
Trust, except that the Trustees may provide that for a specified period
securities of the Trust issued in such unit may be transferred on the books of
the Trust only in such unit.
 
                                  ARTICLE VIII
 
                                ACCOUNTING YEAR
 
    The Trustees shall have the power, from time to time, to fix the fiscal year
of the Trust by a duly adopted resolution.
 
                                   ARTICLE IX
 
                                 DISTRIBUTIONS
 
    Section 1.  AUTHORIZATION.  Dividends and other distributions upon the
shares of beneficial interest of the Trust may be authorized and declared by the
Trustees, subject to the provisions of law and the Declaration of Trust.
Dividends and other distributions may be paid in cash, property or shares of the
Trust, subject to the provisions of law and the Declaration of Trust.
 
    Section 2.  CONTINGENCIES.  Before payment of any dividends or other
distributions, there may be set aside out of any funds of the Trust available
for dividends or other distributions such sum or sums as the Trustees may from
time to time, in their absolute discretion, think proper as a reserve fund for
contingencies, for equalizing dividends or other distributions, for repairing or
maintaining any property of the Trust or for such other purpose as the Trustees
shall determine to be in the best interest of the Trust, and the Trustees may
modify or abolish any such reserve in the manner in which it was created.
 
                                   ARTICLE X
 
                               INVESTMENT POLICY
 
    Subject to the provisions of the Declaration of Trust, the Board of Trustees
may from time to time adopt, amend, revise or terminate any policy or policies
with respect to investments by the Trust as it shall deem appropriate in its
sole discretion.
 
                                   ARTICLE XI
 
                                      SEAL
 
    Section 1.  SEAL.  The Trustees may authorize the adoption of a seal by the
Trust. The seal shall have inscribed thereon the name of the Trust and the year
of its formation. The Trustees may authorize one or more duplicate seals and
provide for the custody thereof.
 
                                      C-12
<PAGE>
    Section 2.  AFFIXING SEAL.  Whenever the Trust is permitted or required to
affix its seal to a document, it shall be sufficient to meet the requirements of
any law, rule or regulation relating to a seal to place the word "(SEAL)"
adjacent to the signature of the person authorized to execute the document on
behalf of the Trust.
 
                                  ARTICLE XII
 
                    INDEMNIFICATION AND ADVANCE OF EXPENSES
 
    To the maximum extent permitted by Maryland law in effect from time to time,
the Trust shall indemnify (a) any Trustee, officer or shareholder or any former
Trustee, officer or shareholder (including among the foregoing, for all purposes
of this Article XII and without limitation, any individual who, while a Trustee,
officer or shareholder and at the request of the Trust, serves or has served
another real estate investment trust, corporation, partnership, joint venture,
trust, employee benefit plan or any other enterprise as a trustee, director,
officer, partner, employee or agent of such real estate investment trust,
corporation, partnership, joint venture, trust, employee benefit plan or other
enterprise) who has been successful, on the merits or otherwise, in the defense
of a proceeding to which he was made a party by reason of service in such
capacity, against reasonable expenses incurred by him in connection with the
proceeding, (b) any Trustee or officer or any former Trustee or officer against
any claim or liability to which he may become subject by reason of such status
unless it is established that (i) his act or omission was material to the matter
giving rise to the proceeding and was committed in bad faith or was the result
of active and deliberate dishonesty, (ii) he actually received an improper
personal benefit in money, property or services or (iii) in the case of a
criminal proceeding, he had reasonable cause to believe that his act or omission
was unlawful and (c) each shareholder or former shareholder against any claim or
liability to which he may become subject by reason of such status. In addition,
the Trust shall, without requiring a preliminary determination of the ultimate
entitlement to indemnification, pay or reimburse, in advance of final
disposition of a proceeding, reasonable expenses incurred by a Trustee, officer
or shareholder or former Trustee, officer or shareholder made a party to a
proceeding by reason such status, provided that, in the case of a Trustee or
officer, the Trust shall have received (i) a written affirmation by the Trustee
or officer of his good faith belief that he has met the applicable standard of
conduct necessary for indemnification by the Trust as authorized by these Bylaws
and (ii) a written undertaking by or on his behalf to repay the amount paid or
reimbursed by the Trust if it shall ultimately be determined that the applicable
standard of conduct was not met. The Trust may, with the approval of its
Trustees, provide such indemnification or payment or reimbursement of expenses
to any Trustee, officer or shareholder or any former Trustee, officer or
shareholder who served a predecessor of the Trust and to any employee or agent
of the Trust or a predecessor of the Trust. Neither the amendment nor repeal of
this Article, nor the adoption or amendment of any other provision of the
Declaration of Trust or these Bylaws inconsistent with this Article, shall apply
to or affect in any respect the applicability of this Article with respect to
any act or failure to act which occurred prior to such amendment, repeal or
adoption.
 
    Any indemnification or payment or reimbursement of the expenses permitted by
these Bylaws shall be furnished in accordance with the procedures provided for
indemnification or payment or reimbursement of expenses, as the case may be,
under Section 2-418 of the MGCL for directors of Maryland corporations. The
Trust may provide to Trustees, officers and shareholders such other and further
indemnification or payment or reimbursement of expenses, as the case may be, to
the fullest extent permitted by the MGCL, as in effect from time to time, for
directors of Maryland corporations.
 
                                      C-13
<PAGE>
                                  ARTICLE XIII
 
                                WAIVER OF NOTICE
 
    Whenever any notice is required to be given pursuant to the Declaration of
Trust or Bylaws or pursuant to applicable law, a waiver thereof in writing,
signed by the person or persons entitled to such notice, whether before or after
the time stated therein, shall be deemed equivalent to the giving of such
notice. Neither the business to be transacted at nor the purpose of any meeting
need be set forth in the waiver of notice, unless specifically required by
statute. The attendance of any person at any meeting shall constitute a waiver
of notice of such meeting, except where such person attends a meeting for the
express purpose of objecting to the transaction of any business on the ground
that the meeting is not lawfully called or convened.
 
                                  ARTICLE XIV
 
                              AMENDMENT OF BYLAWS
 
    The Trustees shall have the exclusive power to adopt, alter or repeal any
provision of these Bylaws and to make new Bylaws.
 
                                   ARTICLE XV
 
                                 MISCELLANEOUS
 
    All references to the Declaration of Trust shall include any amendments
thereto.
 
                                      C-14
<PAGE>
                                                                      APPENDIX D
 
                       CORPORATE OFFICE PROPERTIES TRUST
                         1998 LONG TERM INCENTIVE PLAN
 
    1. PURPOSES.
 
    The purposes of the 1998 Long Term Incentive Plan are to advance the
interests of Corporate Office Properties Trust and its shareholders by providing
a means to attract, retain, and motivate employees and directors of the Company
upon whose judgment, initiative and efforts the continued success, growth and
development of the Company is dependent.
 
    2. DEFINITIONS.
 
    For purposes of the Plan, the following terms shall be defined as set forth
below:
 
        (a) "Affiliate" means any entity other than the Company and its
    Subsidiaries that is designated by the Committee as a participating employer
    under the Plan, provided that the Company directly or indirectly owns at
    least 20% of the combined voting power of all classes of stock of such
    entity or at least 20% of the ownership interests in such entity.
 
        (b) "Award" means any Option or Dividend Equivalent granted to an
    Eligible Person under the Plan.
 
        (c) "Award Agreement" means any written agreement, contract, or other
    instrument or document evidencing an Award.
 
        (d) "Beneficiary" means the person, persons, trust or trusts which have
    been designated by such Eligible Person in his or her most recent written
    beneficiary designation filed with the Company to receive the benefits
    specified under this Plan upon the death of the Eligible Person, or, if
    there is no designated Beneficiary or surviving designated Beneficiary, then
    the person, persons, trust or trusts entitled by will or the laws of descent
    and distribution to receive such benefits.
 
        (e) "Board" means the Board of Directors of the Company.
 
        (f) "Code" means the Internal Revenue Code of 1986, as amended from time
    to time. References to any provision of the Code shall be deemed to include
    successor provisions thereto and regulations thereunder.
 
        (g) "Committee" means the Compensation Committee of the Board, or such
    other Board committee (which may include the entire Board), as may be
    designated by the Board to administer the Plan.
 
        (h) "Company" means Corporate Office Properties Trust, a Maryland
    business trust, or any successor.
 
        (i) "Director" means a member of the Board who is not an employee of the
    Company, a Subsidiary or an Affiliate.
 
        (j) "Dividend Equivalent" means a right, granted under Section 5(c), to
    receive cash, Shares, or other property equal in value to dividends paid
    with respect to a specified number of Shares. Dividend Equivalents may be
    awarded on a free-standing basis or in connection with another Award, and
    may be paid currently or on a deferred basis.
 
        (k) "Eligible Person" means (i) an employee of the Company, a Subsidiary
    or an Affiliate, including any director who is an employee, or (ii) a
    Director.
 
                                      D-1
<PAGE>
        (l) "Exchange Act" means the Securities Exchange Act of 1934, as amended
    from time to time. References to any provision of the Exchange Act shall be
    deemed to include successor provisions thereto and regulations thereunder.
 
        (m) "Fair Market Value" means, with respect to Shares or other property,
    the fair market value of such Shares or other property determined by such
    methods or procedures as shall be established from time to time by the
    Committee. If the Shares are listed on any established stock exchange or a
    national market system, unless otherwise determined by the Committee in good
    faith, the Fair Market Value of Shares shall mean the mean between the high
    and low selling prices per Share on the immediately preceding date (or, if
    the Shares were not traded on that day, the next preceding day that the
    Shares were traded) on the principal exchange or market system on which the
    Shares are traded, as such prices are officially quoted on such exchange or
    market system.
 
        (n) "ISO" means any Option intended to be and designated as an incentive
    stock option within the meaning of Section 422 of the Code.
 
        (o) "NQSO" means any Option that is not an ISO.
 
        (p) "Option" means a right, granted under Section 5(b), to purchase
    Shares.
 
        (q) "Participant" means an Eligible Person who has been granted an Award
    under the Plan.
 
        (r) "Plan" means this 1998 Long Term Incentive Plan.
 
        (s) "Rule 16b-3" means Rule 16b-3, as from time to time in effect and
    applicable to the Plan and Participants, promulgated by the Securities and
    Exchange Commission under Section 16 of the Exchange Act.
 
        (t) "Shares" means common shares of beneficial interest, $.01 par value
    per share, of the Company.
 
        (u) "Subsidiary" means any corporation (other than the Company) in an
    unbroken chain of corporations beginning with the Company if each of the
    corporations (other than the last corporation in the unbroken chain) owns
    shares possessing 50% or more of the total combined voting power of all
    classes of stock in one of the other corporations in the chain.
 
    3. ADMINISTRATION.
 
    (a) AUTHORITY OF THE COMMITTEE. The Plan shall be administered by the
Committee, and the Committee shall have full and final authority to take the
following actions, in each case subject to and consistent with the provisions of
the Plan:
 
        (i) to select Eligible Persons to whom Awards may be granted;
 
        (ii) to designate Affiliates;
 
       (iii) to determine the type or types of Awards to be granted to each
    Eligible Person;
 
        (iv) to determine the type and number of Awards to be granted, the
    number of Shares to which an Award may relate, the terms and conditions of
    any Award granted under the Plan (including, but not limited to, any
    exercise price, grant price, or purchase price, and any bases for adjusting
    such exercise, grant or purchase price, any restriction or condition, any
    schedule for lapse of restrictions or conditions relating to transferability
    or forfeiture, exercisability, or settlement of an Award, and waiver or
    accelerations thereof, and waivers of performance conditions relating to an
    Award, based in each case on such considerations as the Committee shall
    determine), and all other matters to be determined in connection with an
    Award;
 
                                      D-2
<PAGE>
        (v) to determine whether, to what extent, and under what circumstances
    an Award may be settled, or the exercise price of an Award may be paid, in
    cash, Shares, other Awards, or other property, or an Award may be canceled,
    forfeited, exchanged, or surrendered;
 
        (vi) to determine whether, to what extent, and under what circumstances
    cash, Shares, other Awards, or other property payable with respect to an
    Award will be deferred either automatically, at the election of the
    Committee, or at the election of the Eligible Person;
 
       (vii) to prescribe the form of each Award Agreement, which need not be
    identical for each Eligible Person;
 
      (viii) to adopt, amend, suspend, waive, and rescind such rules and
    regulations and appoint such agents as the Committee may deem necessary or
    advisable to administer the Plan;
 
        (ix) to correct any defect or supply any omission or reconcile any
    inconsistency in the Plan and to construe and interpret the Plan and any
    Award, rules and regulations, Award Agreement, or other instrument
    hereunder;
 
        (x) to accelerate the exercisability or vesting of all or any portion of
    any Award or to extend the period during which an Award is exercisable; and
 
        (xi) to make all other decisions and determinations as may be required
    under the terms of the Plan or as the Committee may deem necessary or
    advisable for the administration of the Plan.
 
    (b) MANNER OF EXERCISE OF COMMITTEE AUTHORITY. The Committee shall have sole
discretion in exercising its authority under the Plan. Any action of the
Committee with respect to the Plan shall be final, conclusive, and binding on
all persons, including the Company, Subsidiaries, Affiliates, Eligible Persons,
any person claiming any rights under the Plan from or through any Eligible
Person, and shareholders. The express grant of any specific power to the
Committee, and the taking of any action by the Committee, shall not be construed
as limiting any power or authority of the Committee. The Committee may delegate
to officers or employees of the Company or any Subsidiary or Affiliate the
authority, subject to such terms as the Committee shall determine, to perform
administrative functions and, with respect to Awards granted to persons not
subject to Section 16 of the Exchange Act, to perform such other functions as
the Committee may determine, to the extent permitted under Rule 16b-3 (if
applicable) and applicable law.
 
    (c) LIMITATION OF LIABILITY. Each member of the Committee shall be entitled
to, in good faith, rely or act upon any report or other information furnished to
him or her by any officer or other employee of the Company or any Subsidiary or
Affiliate, the Company's independent certified public accountants, or other
professional retained by the Company to assist in the administration of the
Plan. No member of the Committee, nor any officer or employee of the Company
acting on behalf of the Committee, shall be personally liable for any action,
determination, or interpretation taken or made in good faith with respect to the
Plan, and all members of the Committee and any officer or employee of the
Company acting on their behalf shall, to the extent permitted by law, be fully
indemnified and protected by the Company with respect to any such action,
determination, or interpretation.
 
    4. SHARES SUBJECT TO THE PLAN.
 
    (a) Subject to adjustment as provided in Section 4(c) hereof, the total
number of Shares reserved for issuance in connection with Awards under the Plan
shall be 10 percent of the number of issued and outstanding Shares at the time
the Award is granted; provided however, that no more than 200,000 Shares shall
be cumulatively available for Awards of ISOs hereunder. No Award may be granted
if the number of Shares to which such Award relates, when added to the number of
Shares previously issued under the Plan, exceeds the number of Shares reserved
under the preceding sentence. If any Awards are forfeited, canceled, terminated,
exchanged or surrendered or such Award is settled in cash or otherwise
terminates without a distribution of Shares to the Participant, any Shares
counted against the number of Shares reserved and available under the Plan with
respect to such Award shall, to the extent of any such forfeiture,
 
                                      D-3
<PAGE>
settlement, termination, cancellation, exchange or surrender, again be available
for Awards under the Plan. Upon the exercise of any Award granted in tandem with
any other Awards, such related Awards shall be canceled to the extent of the
number of Shares as to which the Award is exercised.
 
    (b) Subject to adjustment as provided in Section 4(c) hereof, the maximum
number of Shares with respect to which Options may be granted during a calendar
year to any Eligible Person under this Plan shall be 200,000 Shares.
 
    (c) In the event that the Committee shall determine that any dividend in
Shares, recapitalization, Share split, reverse split, reorganization, merger,
consolidation, spin-off, combination, repurchase, or share exchange, or other
similar corporate transaction or event, affects the Shares such that an
adjustment is appropriate in order to prevent dilution or enlargement of the
rights of Eligible Persons under the Plan, then the Committee shall make such
equitable changes or adjustments as it deems appropriate and, in such manner as
it may deem equitable, adjust any or all of (i) the number and kind of shares
which may thereafter be issued under the Plan, (ii) the number and kind of
shares, other securities or other consideration issued or issuable in respect of
outstanding Awards, and (iii) the exercise price, grant price, or purchase price
relating to any Award; provided, however, in each case that, with respect to
ISOs, such adjustment shall be made in accordance with Section 424(a) of the
Code, unless the Committee determines otherwise.
 
    (d) Any Shares distributed pursuant to an Award may consist, in whole or in
part, of authorized and unissued Shares or treasury Shares including Shares
acquired by purchase in the open market or in private transactions.
 
    5. SPECIFIC TERMS OF AWARDS.
 
    (a) GENERAL. Awards may be granted on the terms and conditions set forth in
this Section 5. In addition, the Committee may impose on any Award or the
exercise thereof, at the date of grant or thereafter (subject to Section 8(d)),
such additional terms and conditions, not inconsistent with the provisions of
the Plan, as the Committee shall determine, including terms regarding forfeiture
of Awards or continued exercisability of Awards in the event of termination of
employment by the Eligible Person.
 
    (b) OPTIONS. The Committee is authorized to grant Options, which may be
NQSOs or ISOs, to Eligible Persons on the following terms and conditions:
 
        (i) EXERCISE PRICE. The exercise price per Share purchasable under an
    Option shall be determined by the Committee, and the Committee may, without
    limitation, set an exercise price that is based upon achievement of
    performance criteria if deemed appropriate by the Committee.
 
        (ii) OPTION TERM. The term of each Option shall be determined by the
    Committee.
 
       (iii) TIME AND METHOD OF EXERCISE. The Committee shall determine at the
    date of grant or thereafter the time or times at which an Option may be
    exercised in whole or in part (including, without limitation, upon
    achievement of performance criteria if deemed appropriate by the Committee),
    the methods by which such exercise price may be paid or deemed to be paid
    (including, without limitation, broker-assisted exercise arrangements), the
    form of such payment (including, without limitation, cash, Shares, notes or
    other property), and the methods by which Shares will be delivered or deemed
    to be delivered to Eligible Persons.
 
        (iv) ISOS. The terms of any ISO granted under the Plan shall comply in
    all respects with the provisions of Section 422 of the Code, including but
    not limited to the requirement that the ISO shall be granted within ten
    years from the earlier of the date of adoption or shareholder approval of
    the Plan. ISOs may only be granted to employees of the Company or a
    Subsidiary.
 
    (c) DIVIDEND EQUIVALENTS. The Committee is authorized to grant Dividend
Equivalents to Eligible Persons. The Committee may provide, at the date of grant
or thereafter, that Dividend Equivalents shall be
 
                                      D-4
<PAGE>
paid or distributed when accrued or shall be deemed to have been reinvested in
additional Shares, or other investment vehicles as the Committee may specify,
provided that Dividend Equivalents (other than freestanding Dividend
Equivalents) shall be subject to all conditions and restrictions of the
underlying Awards to which they relate.
 
    6. CERTAIN PROVISIONS APPLICABLE TO AWARDS.
 
    (a) STAND-ALONE, ADDITIONAL, TANDEM AND SUBSTITUTE AWARDS. Awards granted
under the Plan may, in the discretion of the Committee, be granted to Eligible
Persons either alone or in addition to, in tandem with, or in exchange or
substitution for, any other Award granted under the Plan or any award granted
under any other plan or agreement of the Company, a predecessor of the Company
or any Subsidiary or Affiliate, or any business entity to be acquired by the
Company or a Subsidiary or Affiliate, or any other right of an Eligible Person
to receive payment from the Company, a predecessor of the Company or any
Subsidiary or Affiliate. Awards may be granted in addition to or in tandem with
such other Awards or awards, and may be granted either as of the same time as or
a different time from the grant of such other Awards or awards. The per Share
exercise price of any Option, or purchase price of any other Award conferring a
right to purchase Shares, which is granted in connection with the substitution
of awards granted under any other plan or agreement of the Company, a
predecessor of the Company or any Subsidiary or Affiliate or any business entity
to be acquired by the Company or any Subsidiary or Affiliate shall be determined
by the Committee, in its discretion.
 
    (b) TERMS OF AWARDS. The term of each Award granted to an Eligible Person
shall be for such period as may be determined by the Committee; provided,
however, that in no event shall the term of any ISO exceed a period of ten years
from the date of its grant (or such shorter period as may be applicable under
Section 422 of the Code).
 
    (c) FORM OF PAYMENT UNDER AWARDS. Subject to the terms of the Plan and any
applicable Award Agreement, payments to be made by the Company or a Subsidiary
or Affiliate upon the grant, maturation, or exercise of an Award may be made in
such forms as the Committee shall determine at the date of grant or thereafter,
including, without limitation, cash, Shares, notes or other property, and may be
made in a single payment or transfer, in installments, or on a deferred basis.
The Committee may make rules relating to installment or deferred payments with
respect to Awards, including the rate of interest to be credited with respect to
such payments.
 
    (d) NONTRANSFERABILITY. Unless otherwise set forth by the Committee in an
Award Agreement, Awards shall not be transferable by an Eligible Person except
by will or the laws of descent and distribution (except pursuant to a
Beneficiary designation) and shall be exercisable during the lifetime of an
Eligible Person only by such Eligible Person or his guardian or legal
representative. An Eligible Person's rights under the Plan may not be pledged,
mortgaged, hypothecated, or otherwise encumbered, and shall not be subject to
claims of the Eligible Person's creditors.
 
    7. CHANGE OF CONTROL PROVISIONS.
 
    (a) ACCELERATION OF EXERCISABILITY AND LAPSE OF RESTRICTIONS; CASH-OUT OF
AWARDS. Unless otherwise provided by the Committee at the time of the Award
grant, all outstanding Awards pursuant to which the Participant may have rights
the exercise of which is restricted or limited shall become fully exercisable at
the time of a Change of Control.
 
    (b) DEFINITIONS OF CERTAIN TERMS. For purposes of this Section 7, the
following definitions, in addition to those set forth in Section 2, shall apply:
 
        (i) "Change of Control" means and shall be deemed to have occurred if:
 
           (a) any Person (within the meaning of the Exchange Act), other than
       the Company or a Permitted Person, is or becomes the "beneficial owner"
       (as defined in Rule 13d-3 under the
 
                                      D-5
<PAGE>
       Exchange Act), directly or indirectly, of Voting Securities representing
       more than 20 percent or more of the total voting power of all the
       then-outstanding Voting Securities; or
 
           (b) during any period of two consecutive years, individuals who at
       the beginning of such period constituted the Board (together with any new
       directors whose election by such Board or whose nomination for election
       by the shareholders of the Company was approved by a vote of 66 2/3% of
       the directors of the Company then still in office who were either
       directors at the beginning of such period or whose election or nomination
       for election was previously so approved) cease for any reason to
       constitute a majority of the Board then in office;
 
           (c) the stockholders of the Company approve a merger, consolidation,
       recapitalization or reorganization of the Company or a Subsidiary,
       reverse split of any class of Voting Securities, or an acquisition of
       securities or assets by the Company or a Subsidiary, or consummation of
       any such transaction if stockholder approval is not obtained, other than
       (I) any such transaction in which the holders of outstanding Voting
       Securities immediately prior to the transaction receive (or, in the case
       of a transaction involving a Subsidiary and not the Company, retain),
       with respect to such Voting Securities, voting securities of the
       surviving or transferee entity representing more than 60 percent of the
       total voting power outstanding immediately after such transaction, with
       the voting power of each such continuing holder relative to other such
       continuing holders not substantially altered in the transaction, or (II)
       any such transaction which would result in Permitted Persons beneficially
       owning more than 50 percent of the voting securities of the surviving
       entity outstanding immediately after such transaction, or (III) the
       merger of Corporate Office Properties Trust, Inc. indirectly with and
       into the Company; or
 
           (d) the stockholders of the Company approve a plan of complete
       liquidation of the Company or an agreement for the sale or disposition by
       the Company of all or substantially all of the Company's assets other
       than any such transaction which would result in Permitted Persons owning
       or acquiring more than 50 percent of the assets owned by the Company
       immediately prior to the transaction.
 
        (ii) "Permitted Person" means (a) a majority-owned subsidiary of the
    Company; (b) an employee or group of employees of the Company or any
    majority-owned subsidiary of the Company; (c) a trustee or other fiduciary
    holding securities under an employee benefit plan of the Company or any
    majority-owned subsidiary of the Company; (d) a corporation owned directly
    or indirectly by the stockholders of the Company in substantially the same
    proportion as their ownership of Voting Securities; (e) the Operating
    Partnership; or (f) Jay H. Shidler, Clay W. Hamlin III, Westbrook Real
    Estate Fund I, L.P. or Westbrook Real Estate Co. Investment Partnership I,
    L.P. or any corporation, partnership, trust, estate or other legal entity
    controlled by any of the foregoing Persons (or jointly controlled by Messrs.
    Shidler and Hamlin).
 
       (iii) "Voting Securities or Security" means any securities of the Company
    or a Subsidiary or Affiliate which carry the right to vote generally in the
    election of directors.
 
    8. GENERAL PROVISIONS.
 
    (a) COMPLIANCE WITH LEGAL AND TRADING REQUIREMENTS. The Plan, the granting
and exercising of Awards thereunder, and the other obligations of the Company or
a Subsidiary or Affiliate under the Plan and any Award Agreement, shall be
subject to all applicable federal and state laws, rules and regulations, and to
such approvals by any regulatory or governmental agency as may be required. The
Company, in its discretion, may postpone the issuance or delivery of Shares
under any Award until completion of such stock exchange or market system listing
or registration or qualification of such Shares or other required action under
any state or federal law, rule or regulation as the Company may consider
appropriate, and may require any Participant to make such representations and
furnish such information as it may consider appropriate in connection with the
issuance or delivery of Shares in compliance with applicable laws,
 
                                      D-6
<PAGE>
rules and regulations. No provisions of the Plan shall be interpreted or
construed to obligate the Company to register any Shares under federal or state
law.
 
    (b) NO RIGHT TO CONTINUED EMPLOYMENT OR SERVICE. Neither the Plan nor any
action taken thereunder shall be construed as giving any employee or director
the right to be retained in the employ or service of the Company or any
Subsidiary or Affiliate, nor shall it interfere in any way with the right of the
Company or any Subsidiary or Affiliate to terminate any employee's or director's
employment or service at any time.
 
    (c) TAXES. The Company or any Subsidiary or Affiliate is authorized to
withhold from any Award granted, any payment relating to an Award under the
Plan, including from a distribution of Shares, or any payroll or other payment
to an Eligible Person, amounts of withholding and other taxes due in connection
with any transaction involving an Award, and to take such other action as the
Committee may deem advisable to enable the Company or any Subsidiary or
Affiliate and any Eligible Person to satisfy obligations for the payment of
withholding taxes and other tax obligations relating to any Award. This
authority shall include authority to withhold or receive Shares or other
property and to make cash payments in respect thereof in satisfaction of an
Eligible Person's tax obligations.
 
    (d) CHANGES TO THE PLAN AND AWARDS. The Board may amend, alter, suspend,
discontinue, or terminate the Plan without the consent of shareholders of the
Company or Participants, except that any such amendment, alteration, suspension,
discontinuation, or termination shall be subject to the approval of the
Company's shareholders to the extent such shareholder approval is required under
Section 422 of the Code; provided, however, that, without the consent of an
affected Participant, no amendment, alteration, suspension, discontinuation, or
termination of the Plan may materially and adversely affect the rights of such
Participant under any Award theretofore granted to him or her. The Committee may
waive any conditions or rights under, amend any terms of, or amend, alter,
suspend, discontinue or terminate, any Award theretofore granted, prospectively
or retrospectively; provided, however, that, without the consent of a
Participant, no amendment, alteration, suspension, discontinuation or
termination of any Award may materially and adversely affect the rights of such
Participant under any Award theretofore granted to him or her.
 
    (e) NO RIGHTS TO AWARDS; NO SHAREHOLDER RIGHTS. No Eligible Person or
employee shall have any claim to be granted any Award under the Plan, and there
is no obligation for uniformity of treatment of Eligible Persons and employees.
No Award shall confer on any Eligible Person any of the rights of a shareholder
of the Company unless and until Shares are duly issued or transferred to the
Eligible Person in accordance with the terms of the Award.
 
    (f) UNFUNDED STATUS OF AWARDS. The Plan is intended to constitute an
"unfunded" plan for incentive compensation. With respect to any payments not yet
made to a Participant pursuant to an Award, nothing contained in the Plan or any
Award shall give any such Participant any rights that are greater than those of
a general creditor of the Company; provided, however, that the Committee may
authorize the creation of trusts or make other arrangements to meet the
Company's obligations under the Plan to deliver cash, Shares, other Awards, or
other property pursuant to any Award, which trusts or other arrangements shall
be consistent with the "unfunded" status of the Plan unless the Committee
otherwise determines with the consent of each affected Participant.
 
    (g) NONEXCLUSIVITY OF THE PLAN. Neither the adoption of the Plan by the
Board nor its submission to the shareholders of the Company for approval shall
be construed as creating any limitations on the power of the Board to adopt such
other incentive arrangements as it may deem desirable, including, without
limitation, the granting of options and other awards otherwise than under the
Plan, and such arrangements may be either applicable generally or only in
specific cases.
 
    (h) NOT COMPENSATION FOR BENEFIT PLANS. No Award payable under this Plan
shall be deemed salary or compensation for the purpose of computing benefits
under any benefit plan or other arrangement of the Company for the benefit of
its employees or directors unless the Company shall determine otherwise.
 
                                      D-7
<PAGE>
    (i) NO FRACTIONAL SHARES. No fractional Shares shall be issued or delivered
pursuant to the Plan or any Award. The Committee shall determine whether cash,
other Awards, or other property shall be issued or paid in lieu of such
fractional Shares or whether such fractional Shares or any rights thereto shall
be forfeited or otherwise eliminated.
 
    (j) GOVERNING LAW. The validity, construction, and effect of the Plan, any
rules and regulations relating to the Plan, and any Award Agreement shall be
determined in accordance with the laws of the State of New York without giving
effect to principles of conflict of laws.
 
    (k) EFFECTIVE DATE; PLAN TERMINATION. The Plan shall become effective upon
its approval by shareholders of the Company (the "Effective Date"). The Plan
shall terminate as to future awards on the date which is ten (10) years after
the Effective Date.
 
    (l) TITLES AND HEADINGS. The titles and headings of the sections in the Plan
are for convenience of reference only. In the event of any conflict, the text of
the Plan, rather than such titles or headings, shall control.
 
                                      D-8
<PAGE>
                                                                      APPENDIX E
 
302A.471.  RIGHTS OF DISSENTING SHAREHOLDERS
 
    SUBDIVISION 1.  ACTIONS CREATING RIGHTS.  A shareholder of a corporation may
dissent from, and obtain payment for the fair value of the shareholder's shares
in the event of, any of the following corporate actions:
 
        (a) An amendment of the articles that materially and adversely affects
    the rights or preferences of the shares of the dissenting shareholder in
    that it:
 
           (1) alters or abolishes a preferential right of the shares;
 
           (2) creates, alters, or abolishes a right in respect of the
       redemption of the shares, including a provision respecting a sinking fund
       for the redemption or repurchase of the shares;
 
           (3) alters or abolishes a preemptive right of the holder of the
       shares to acquire shares, securities other than shares, or rights to
       purchase shares or securities other than shares;
 
           (4) excludes or limits the right of a shareholder to vote on a
       matter, or to cumulate votes, except as the right may be excluded or
       limited through the authorization or issuance of securities of an
       existing or new class or series with similar or different voting rights;
       except that an amendment to the articles of an issuing public corporation
       that provides that section 302A.671 does not apply to a control share
       acquisition does not give rise to the right to obtain payment under this
       section;
 
        (b) A sale, lease, transfer, or other disposition of all or
    substantially all of the property and assets of the corporation, but not
    including a transaction permitted without shareholder approval in section
    302A.661, subdivision 1, or a disposition in dissolution described in
    section 302A.725, subdivision 2, or a disposition pursuant to an order of a
    court, or a disposition for cash on terms requiring that all or
    substantially all of the net proceeds of disposition be distributed to the
    shareholders in accordance with their respective interests within one year
    after the date of disposition;
 
        (c) A plan of merger, whether under this chapter or under chapter 322B,
    to which the corporation is a party, except as provided in subdivision 3;
 
        (d) A plan of exchange, whether under this chapter or under chapter
    322B, to which the corporation is a party as the corporation whose shares
    will be acquired by the acquiring corporation, if the shares of the
    shareholder are entitled to be voted on the plan; or
 
        (e) Any other corporate action taken pursuant to a shareholder vote with
    respect to which the articles, the bylaws, or a resolution approved by the
    board directs that dissenting shareholders may obtain payment for their
    shares.
 
    SUBD. 2.  BENEFICIAL OWNERS.  (a) A shareholder shall not assert dissenters'
rights as to less than all of the shares registered in the name of the
shareholder, unless the shareholder dissents with respect to all the shares that
are beneficially owned by another person but registered in the name of the
shareholder and discloses the name and address of each beneficial owner on whose
behalf the shareholder dissents. In that event, the rights of the dissenter
shall be determined as if the shares as to which the shareholder has dissented
and the other shares were registered in the names of different shareholders.
 
    (b) The beneficial owner of shares who is not the shareholder may assert
dissenters' rights with respect to shares held on behalf of the beneficial
owner, and shall be treated as a dissenting shareholder under the terms of this
section and section 302A.473, if the beneficial owner submits to the corporation
at the time of or before the assertion of the rights a written consent of the
shareholder.
 
                                      E-1
<PAGE>
    SUBD. 3.  RIGHTS NOT TO APPLY.  (a) Unless the articles, the bylaws, or a
resolution approved by the board otherwise provide, the right to obtain payment
under this section does not apply to a shareholder of the surviving corporation
in a merger, if the shares of the shareholder are not entitled to be voted on
the merger.
 
    (b) If a date is fixed according to section 302A.445, subdivision 1, for the
determination of shareholders entitled to receive notice of and to vote on an
action described in subdivision 1, only shareholders as of the date fixed, and
beneficial owners as of the date fixed who hold through shareholders, as
provided in subdivision 2, may exercise dissenters' rights.
 
    SUBD. 4.  OTHER RIGHTS.  The shareholders of a corporation who have a right
under this section to obtain payment for their shares do not have a right at law
or in equity to have a corporate action described in subdivision 1 set aside or
rescinded, except when the corporate action is fraudulent with regard to the
complaining shareholder or the corporation.
 
302A.473.  PROCEDURES FOR ASSERTING DISSENTERS' RIGHTS
 
    SUBDIVISION 1.  DEFINITIONS.  (a) For purposes of this section, the terms
defined in this subdivision have the meanings given them.
 
    (b) "Corporation" means the issuer of the shares held by a dissenter before
the corporate action referred to in section 302A.471, subdivision 1 or the
successor by merger of that issuer.
 
    (c) "Fair value of the shares" means the value of the shares of a
corporation immediately before the effective date of the corporate action
referred to in section 302A.471, subdivision 1.
 
    (d) "Interest" means interest commencing five days after the effective date
of the corporate action referred to in section 302A.471, subdivision 1, up to
and including the date of payment, calculated at the rate provided in section
549.09 for interest on verdicts and judgments.
 
    SUBD. 2.  NOTICE OF ACTION.  If a corporation calls a shareholder meeting at
which any action described in section 302A.471, subdivision 1 is to be voted
upon, the notice of the meeting shall inform each shareholder of the right to
dissent and shall include a copy of section 302A.471 and this section and a
brief description of the procedure to be followed under these sections.
 
    SUBD. 3.  NOTICE OF DISSENT.  If the proposed action must be approved by the
shareholders, a shareholder who is entitled to dissent under section 302A.471
and who wishes to exercise dissenters' rights must file with the corporation
before the vote on the proposed action a written notice of intent to demand the
fair value of the shares owned by the shareholder and must not vote the shares
in favor of the proposed action.
 
    SUBD. 4.  NOTICE OF PROCEDURE; DEPOSIT OF SHARES.  (a) After the proposed
action has been approved by the board and, if necessary, the shareholders, the
corporation shall send to all shareholders who have complied with subdivision 3
and to all shareholders entitled to dissent if no shareholder vote was required,
a notice that contains:
 
        (1) The address to which a demand for payment and certificates of
    certificated shares must be sent in order to obtain payment and the date by
    which they must be received;
 
        (2) Any restrictions on transfer of uncertificated shares that will
    apply after the demand for payment is received;
 
        (3) A form to be used to certify the date on which the shareholder, or
    the beneficial owner on whose behalf the shareholder dissents, acquired the
    shares or an interest in them and to demand payment; and
 
                                      E-2
<PAGE>
        (4) A copy of section 302A.471 and this section and a brief description
    of the procedures to be followed under these sections.
 
    (b) In order to receive the fair value of the shares, a dissenting
shareholder must demand payment and deposit certificated shares or comply with
any restrictions on transfer of uncertificated shares within 30 days after the
notice required by paragraph (a) was given, but the dissenter retains all other
rights of a shareholder until the proposed action takes effect.
 
    SUBD. 5.  PAYMENT; RETURN OF SHARES.  (a) After the corporate action takes
effect, or after the corporation receives a valid demand for payment, whichever
is later, the corporation shall remit to each dissenting shareholder who has
complied with subdivisions 3 and 4 the amount the corporation estimates to be
the fair value of the shares, plus interest, accompanied by:
 
        (1) The corporation's closing balance sheet and statement of income for
    a fiscal year ending not more than 16 months before the effective date of
    the corporate action, together with the latest available interim financial
    statements;
 
        (2) An estimate by the corporation of the fair value of the shares and a
    brief description of the method used to reach the estimate; and
 
        (3) A copy of section 302A.471 and this section, and a brief description
    of the procedure to be followed in demanding supplemental payment.
 
    (b) The corporation may withhold the remittance described in paragraph (a)
from a person who was not a shareholder on the date the action dissented from
was first announced to the public or who is dissenting on behalf of a person who
was not a beneficial owner on that date. If the dissenter has complied with
subdivisions 3 and 4, the corporation shall forward to the dissenter the
materials described in paragraph (a), a statement of the reason for withholding
the remittance, and an offer to pay to the dissenter the amount listed in the
materials if the dissenter agrees to accept that amount in full satisfaction.
The dissenter may decline the offer and demand payment under subdivision 6.
Failure to do so entitles the dissenter only to the amount offered. If the
dissenter makes demand, subdivisions 7 and 8 apply.
 
    (c) If the corporation fails to remit payment within 60 days of the deposit
of certificates or the imposition of transfer restrictions on uncertificated
shares, it shall return all deposited certificates and cancel all transfer
restrictions. However, the corporation may again give notice under subdivision 4
and require deposit or restrict transfer at a later time.
 
    SUBD. 6.  SUPPLEMENTAL PAYMENT; DEMAND.  If a dissenter believes that the
amount remitted under subdivision 5 is less than the fair value of the shares
plus interest, the dissenter may give written notice to the corporation of the
dissenter's own estimate of the fair value of the shares, plus interest, within
30 days after the corporation mails the remittance under subdivision 5, and
demand payment of the difference. Otherwise, a dissenter is entitled only to the
amount remitted by the corporation.
 
    SUBD. 7.  PETITION; DETERMINATION.  If the corporation receives a demand
under subdivision 6, it shall, within 60 days after receiving the demand, either
pay to the dissenter the amount demanded or agreed to by the dissenter after
discussion with the corporation or file in court a petition requesting that the
court determine the fair value of the shares, plus interest. The petition shall
be filed in the county in which the registered office of the corporation is
located, except that a surviving foreign corporation that receives a demand
relating to the shares of a constituent domestic corporation shall file the
petition in the county in this state in which the last registered office of the
constituent corporation was located. The petition shall name as parties all
dissenters who have demanded payment under subdivision 6 and who have not
reached agreement with the corporation. The corporation shall, after filing the
petition, serve all parties with a summons and copy of the petition under the
rules of civil procedure. Nonresidents of this state may be served by registered
or certified mail or by publication as provided by law. Except as otherwise
provided, the rules of civil procedure apply to this proceeding. The
jurisdiction of the court is plenary and exclusive.
 
                                      E-3
<PAGE>
The court may appoint appraisers, with powers and authorities the court deems
proper, to receive evidence on and recommend the amount of the fair value of the
shares. The court shall determine whether the shareholder or shareholders in
question have fully complied with the requirements of this section, and shall
determine the fair value of the shares, taking into account any and all factors
the court finds relevant, computed by any method or combination of methods that
the court, in its discretion, sees fit to use, whether or not used by the
corporation or by a dissenter. The fair value of the shares as determined by the
court is binding on all shareholders, wherever located. A dissenter is entitled
to judgment in cash for the amount by which the fair value of the shares as
determined by the court, plus interest, exceeds the amount, if any, remitted
under subdivision 5, but shall not be liable to the corporation for the amount,
if any, by which the amount, if any, remitted to the dissenter under subdivision
5 exceeds the fair value of the shares as determined by the court, plus
interest.
 
    SUBD. 8.  COSTS; FEES; EXPENSES.  (a) The court shall determine the costs
and expenses of a proceeding under subdivision 7, including the reasonable
expenses and compensation of any appraisers appointed by the court, and shall
assess those costs and expenses against the corporation, except that the court
may assess part or all of those costs and expenses against a dissenter whose
action in demanding payment under subdivision 6 is found to be arbitrary,
vexatious, or not in good faith.
 
    (b) If the court finds that the corporation has failed to comply
substantially with this section, the court may assess all fees and expenses of
any experts or attorneys as the court deems equitable. These fees and expenses
may also be assessed against a person who has acted arbitrarily, vexatiously, or
not in good faith in bringing the proceeding, and may be awarded to a party
injured by those actions.
 
    (c) The court may award, in its discretion, fees and expenses to an attorney
for the dissenters out of the amount awarded to the dissenters, if any.
 
                                      E-4
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20. INDEMNIFICATION OF TRUSTEES AND OFFICERS
 
    The Maryland REIT Law permits a Maryland real estate investment trust to
include in its Declaration of Trust a provision limiting the liability of its
trustees and officers to the trust and its shareholders for money damages except
for liability resulting from (a) actual receipt of an improper benefit or profit
in money, property or services or (b) active and deliberate dishonesty
established by a final judgment as being material to the cause of action. The
Declaration of Trust of the Trust contains such a provision which eliminates
such liability to the maximum extent permitted by the Maryland REIT Law.
 
    The Declaration of Trust of the Trust authorizes it, to the maximum extent
permitted by Maryland law, to obligate itself to indemnify and to pay or
reimburse reasonable expenses in advance of final disposition of a proceeding to
(a) any present or former trustee or officer or (b) any individual who, while a
trustee of the Trust and at the request of the Trust, serves or has served
another real estate investment trust, corporation, partnership, joint venture,
trust, employee benefit plan or any other enterprise as a trustee, director,
officer or partner of such real estate investment trust, corporation,
partnership, joint venture, trust, employee benefit plan or other enterprise
from and against any claim or liability to which such person may become subject
or which such person may incur by reason of his or her status as a present or
former Trustee or officer of the Trust. The Bylaws of the Trust obligate it, to
the maximum extent permitted by Maryland law, to indemnify and to pay or
reimburse reasonable expenses in advance of final disposition of a proceeding to
(a) any present of former trustee or officer who is made a party to the
proceeding by reason of his service in that capacity or (b) any individual who,
while a Trustee or officer of the Trust and at the request of the Trust, serves
or has served another real estate investment trust, corporation, partnership,
joint venture, trust, employee benefit plan or any other enterprise as a
trustee, director, officer or partner of such real estate investment trust,
corporation, partnership, joint venture, trust, employee benefit plan or other
enterprise and who is made a party to the proceeding by reason of his service in
that capacity, against any claim or liability to which he may become subject by
reason of such status. The Declaration of Trust and Bylaws also permit the Trust
to indemnify and advance expenses to any person who served a predecessor of the
Trust in any of the capacities described above and to any employee or agent of
the Trust to indemnify a trustee or officer who has been successful, on the
merits or otherwise, in the defense of any proceeding to which he is made a
party by reason of his service in that capacity.
 
    The Maryland REIT Law permits a Maryland real estate investment trust to
indemnify and advance expenses to its trustees, officers, employees and agents
to the same extent as permitted by the Maryland General Corporation Law (the
"MGCL") for directors and officers of Maryland corporations. The MGCL permits a
corporation to indemnify its present and former directors and officers, among
others, against judgments, penalties, fines, settlements and reasonable expenses
actually incurred by them in connection with any proceeding to which they may be
made party by reason of their service in those or other capacities unless it is
established that (a) the act or omission of the director or officer was material
to the matter giving rise to the proceeding and (i) was committed in bad faith
or (ii) was the result of active and deliberate dishonesty, (b) the director or
officer actually received an improper personal benefit in money, property or
services or (c) in the case of any criminal proceeding, the director or officer
had reasonable cause to believe that the act or omission was unlawful. However,
under the MGCL, a Maryland corporation may not indemnify for an adverse judgment
in a suit by or in the right of the corporation or for a judgment of liability
on the basis that personal benefit was improperly received, unless in either
case a court orders indemnification and then only for expenses. In addition, the
MGCL permits a corporation to advance reasonable expenses to a director or
officer upon the corporation's receipt of (a) a written affirmation by the
director or officer of his good faith belief that he has met the standard of
conduct
 
                                      II-1
<PAGE>
necessary for indemnification by the corporation and (b) a written undertaking
by or on his behalf to repay the amount paid or reimbursed by the corporation if
it shall ultimately be determined that the standard of conduct was not met.
 
    The Operating Partnership Agreement provides that the Operating Partnership
shall indemnify the Trust, as general partner, and each director, officer and
shareholder of the Trust and each person (including any affiliate) designated as
an agent by the Trust to the fullest extent permitted under the Delaware Revised
Uniform Limited Partnership Act from and against any and all losses (including
reasonable attorney's fees), and any other amounts arising out of or in
connection with any claim, relating to or resulting (directly or indirectly)
from the operations of the Operating Partnership, in which such indemnified
party becomes involved, or reasonably believes it may become involved, as a
result of its acting in the referred to capacity.
 
ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
    (a) Exhibits
 
<TABLE>
<CAPTION>
EXHIBIT
   NO.     DESCRIPTION
- ---------  ----------------------------------------------------------------------------------------------------------
<C>        <S>
 
     2.1   Agreement and Plan of Merger, dated as of January 31, 1998, between the Registrant, the Maryland Company
           and the Company (included as Appendix A to the Proxy Statement/Prospectus forming a part of this
           Registration Statement).
 
     2.2   Formation/Contribution Agreement dated September 7, 1997, as amended, by and among the Company and certain
           subsidiary corporations and partnerships regarding the Transactions (filed with the Company's Current
           Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
     2.3   Agreement and Plan of Reorganization between the Company and Crown Advisors, Inc. (filed with the
           Company's Current Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
     2.4   Limited Partnership Agreement of the Operating Partnership dated October 14, 1997 (filed with the
           Company's Current Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
     2.5   Amended and Restated Partnership Agreement of Blue Bell Investment Company (filed with the Company's
           Current Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
     2.6   Amended and Restated Partnership Agreement of South Brunswick Investors, L.P. (filed with the Company's
           Current Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
     2.7   Amended and Restated Partnership Agreement of ComCourt Investors, L.P. (filed with the Company's Current
           Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
     2.8   Amended and Restated Partnership Agreement of 6385 Flank, L.P. (filed with the Company's Current Report on
           Form 8-K on October 29, 1997 and incorporated herein by reference).
 
     3.1   Amended and Restated Declaration of Trust of Registrant (included as Appendix B to the Proxy
           Statement/Prospectus forming a part of this Registration Statement)
 
     3.2   Bylaws of Registrant (included as Appendix C to the Proxy Statement/Prospectus forming a part of this
           Registration Statement).
</TABLE>
 
                                      II-2
<PAGE>
<TABLE>
<CAPTION>
EXHIBIT
   NO.     DESCRIPTION
- ---------  ----------------------------------------------------------------------------------------------------------
<C>        <S>
     4.1   Form of certificate for the Registrant's Common Shares of Beneficial Interest, $0.01 par value per share.
 
     5.1   Opinion of Cahill Gordon & Reindel regarding the legality of the securities being registered hereby.
 
     8.1   Opinion of Cahill Gordon & Reindel as to certain tax matters.
 
    10.1   Clay W. Hamlin III Employment Agreement dated October 14, 1997 with the Operating Partnership (filed with
           the Company's Current Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
    10.2   Registration Rights Agreement dated October 14, 1997 for the benefit of certain shareholders of the
           Registrant (filed with the Company's Current Report on Form 8-K on October 29, 1997 and incorporated
           herein by reference).
 
    10.3   Management Agreement between Registrant and Glacier Realty, LLC (filed with the Company's Current Report
           on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
    10.4   Senior Secured Credit Agreement dated October 13, 1997 (filed with the Company's Current Report on Form
           8-K on October 29, 1997 and incorporated herein by reference).
 
    10.5   Corporate Office Properties Trust 1998 Long Term Incentive Plan (included as Appendix D to the Proxy
           Statement/Prospectus forming a part of this Registration Statement).
 
    10.6   Lease Agreement between Blue Bell Investment Company, L.P. and Unysis Corporation dated March 12, 1997
           with respect to lot A.
 
    10.7   Lease Agreement between Blue Bell Investment Company, L.P. and Unysis Corporation dated March 12, 1997
           with respect to lot B.
 
    10.8   Lease Agreement between Blue Bell Investment Company, L.P. and Unysis Corporation dated March 12, 1997
           with respect to lot C.
 
    10.9   Amended and Restated Lease between South Brunswick Investors, L.P. and International Business Machines
           Corporation dated August 11, 1995, as amended.
 
    10.10  Agreement of Lease between South Brunswick Investors, L.P. and Teleport Communications Group Inc. dated
           February 20, 1996, as amended.
 
    10.11  Agreement of Lease between South Brunswick Investors, L.P. and Teleport Communications Group Inc. dated
           August 19, 1996.
 
    13.1   The Company's Annual Report on Form 10-KSB40 for the year ended December 31, 1996, as amended (other than
           the audited financial information of the Company set forth therein).
 
    13.2   The Company's Quarterly Report on Form 10-QSB for the quarter ended September 30, 1997.
 
    16.1   Letter to the Commission from Lurie, Besikof, Lapidus & Co., LLP dated November 4, 1997 (filed with
           Company's Current Report on Form 8-K on November 6, 1997 and incorporated herein by reference).
 
    21     Subsidiaries of Registrant.
 
    23.1   Consent of Cahill Gordon & Reindel (included in Exhibits 5.1 and 8.1).
 
    23.2   Consent of Coopers & Lybrand L.L.P.
 
    24.1   Powers of attorney (included on signature page to the Registration Statement).
</TABLE>
 
                                      II-3
<PAGE>
<TABLE>
<CAPTION>
EXHIBIT
   NO.     DESCRIPTION
- ---------  ----------------------------------------------------------------------------------------------------------
<C>        <S>
    99.1   Form of proxy to be mailed to stockholders of the Company in connection with the Mergers.
</TABLE>
 
    (b) Financial Statement Schedules
 
    N/A
 
ITEM 22. UNDERTAKINGS
 
    (a) The undersigned Registrant hereby undertakes as follows: that prior to
any public reoffering of the securities registered hereunder through use of a
prospectus which is a part of this Registration Statement, by any person or
party who is deemed to be an underwriter within the meaning of rule 145(c), the
issuer undertakes that such reoffering prospectus will contain the information
called for by the applicable registration form with respect to reofferings by
persons who may be deemed underwriters, in addition to the information called
for by the other items of the applicable form.
 
    (b) The Registrant undertakes that every prospectus: (i) that is filed
pursuant to paragraph (a) immediately preceding, or (ii) that purports to meet
the requirements of Section 10(a)(3) of the Securities Act and is used in
connection with the offering of securities subject to Rule 415, will be filed as
a part of an amendment to the registration statement and will not be used until
such amendment is effective, and that, for purposes of determining any liability
under the Securities Act of 1933, each such post-effective amendment shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial BONA FIDE offering thereof.
 
    (c) Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers and controlling persons of
the Registrant pursuant to the foregoing provisions, or otherwise, the
Registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a director, officer or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.
 
    (d) The undersigned Registrant hereby undertakes to respond to requests for
information that is incorporated by reference into the Proxy
Statement/Prospectus pursuant to Items 4, 10(b), 11, or 13 of this Form, within
one business day of receipt of such request, and to send the incorporated
documents by first class mail or other equally prompt means. This includes
information contained in documents filed subsequent to the effective date of the
Registration Statement through the date of responding to the request.
 
    (e) The undersigned Registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the Registration Statement when it became effective.
 
                                      II-4
<PAGE>
                                   SIGNATURES
 
    Pursuant to the requirements of the Securities Act, the Registrant has duly
caused this Registration Statement to be signed on its behalf by the undersigned
thereunto duly authorized, in the City of Philadelphia, State of Pennsylvania,
on the 5th day of February, 1998.
<TABLE>
<S>                                          <C>        <C>                                        <C>
                                             CORPORATE OFFICE PROPERTIES TRUST
 
                                                               By:
 
<CAPTION>
                                                                                  /s/ CLAY W. HAMLIN, III
 
                                                                        ------------------------------------------
 
                                                                                    CLAY W. HAMLIN, III
 
                                                                           PRESIDENT AND CHIEF EXECUTIVE OFFICER
 
</TABLE>
 
                               POWERS OF ATTORNEY
 
    Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated. Each person whose signature appears below
hereby constitutes Clay W. Hamlin and Thomas D. Cassel, and each of them singly,
such person's true and lawful attorneys, each with full power of substitution to
sign for such person and in such person's name and capacity indicated below, any
and all amendments to this Registration Statement, including post-effective
amendments thereto, and to file the same with the Securities and Exchange
Commission, hereby ratifying and confirming such person's signature as it may be
signed by said attorneys to any and all amendments.
 
<TABLE>
<CAPTION>
                      SIGNATURES                                       TITLE                         DATE
- ------------------------------------------------------  -----------------------------------  --------------------
<C>                                                     <S>                                  <C>
 
                  /s/ JAY H. SHIDLER
     -------------------------------------------        Chairman of the Board and Trustee      February 5, 1998
                   (Jay H. Shidler)
 
               /s/ CLAY W. HAMLIN, III                  President And Chief Executive
     -------------------------------------------          Officer, Trustee (Principal          February 5, 1998
                (Clay W. Hamlin, III)                     Executive Officer)
 
                 /s/ THOMAS D. CASSEL
     -------------------------------------------        Vice President, Finance (Principal     February 5, 1998
                  (Thomas D. Cassel)                      Accounting and Financial Officer)
 
     -------------------------------------------        Vice Chairman of the Board and         February 5, 1998
                   (Vernon R. Beck)                       Trustee
 
                 /s/ ALLEN C. GEHRKE
     -------------------------------------------        Trustee                                February 5, 1998
                  (Allen C. Gehrke)
 
                 /s/ KENNETH D. WETHE
     -------------------------------------------        Trustee                                February 5, 1998
                  (Kenneth D. Wethe)
 
     -------------------------------------------        Trustee                                February 5, 1998
                 (William H. Walton)
 
     -------------------------------------------        Trustee                                February 5, 1998
               (Kenneth S. Sweet, Jr.)
</TABLE>
 
                                      II-5
<PAGE>
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
                                                                                                                  PAGE
 EXHIBIT NO.   DESCRIPTION                                                                                      NUMBER
- -------------  -------------------------------------------------------------------------------------------  -----------
<C>            <S>                                                                                          <C>
 
       2.1     Agreement and Plan of Merger, dated as of January 31, 1998, between the Registrant, the
               Maryland Company and the Company (included as Appendix A to the Proxy Statement/Prospectus
               forming a part of this Registration Statement).
 
       2.2     Formation/Contribution Agreement dated September 7, 1997, as amended, by and among the
               Company and certain subsidiary corporations and partnerships regarding the Transactions
               (filed with the Company's Current Report on Form 8-K on October 29, 1997 and incorporated
               herein by reference).
 
       2.3     Agreement and Plan of Reorganization between the Company and Crown Advisors, Inc. (filed
               with the Company's Current Report on Form 8-K on October 29, 1997 and incorporated herein
               by reference).
 
       2.4     Limited Partnership Agreement of the Operating Partnership dated October 14, 1997 (filed
               with the Company's Current Report on Form 8-K on October 29, 1997 and incorporated herein
               by reference).
 
       2.5     Amended and Restated Partnership Agreement of Blue Bell Investment Company (filed with the
               Company's Current Report on Form 8-K on October 29, 1997 and incorporated herein by
               reference).
 
       2.6     Amended and Restated Partnership Agreement of South Brunswick Investors, L.P. (filed with
               the Company's Current Report on Form 8-K on October 29, 1997 and incorporated herein by
               reference).
 
       2.7     Amended and Restated Partnership Agreement of ComCourt Investors, L.P. (filed with the
               Company's Current Report on Form 8-K on October 29, 1997 and incorporated herein by
               reference).
 
       2.8     Amended and Restated Partnership Agreement of 6385 Flank, L.P. (filed with the Company's
               Current Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
       3.1     Amended and Restated Declaration of Trust of Registrant (included as Appendix B to the
               Proxy Statement/Prospectus forming a part of this Registration Statement)
 
       3.2     Bylaws of Registrant (included as Appendix C to the Proxy Statement/Prospectus forming a
               part of this Registration Statement).
 
       4.1     Form of certificate for the Registrant's Common Shares of Beneficial Interest, $0.01 par
               value per share.
 
       5.1     Opinion of Cahill Gordon & Reindel regarding the legality of the securities being
               registered hereby.
 
       8.1     Opinion of Cahill Gordon & Reindel as to certain tax matters.
 
      10.1     Clay W. Hamlin III Employment Agreement dated October 14, 1997 with the Operating
               Partnership (filed with the Company's Current Report on Form 8-K on October 29, 1997 and
               incorporated herein by reference).
 
      10.2     Registration Rights Agreement dated October 14, 1997 for the benefit of certain
               shareholders of the Registrant (filed with the Company's Current Report on Form 8-K on
               October 29, 1997 and incorporated herein by reference).
 
      10.3     Management Agreement between Registrant and Glacier Realty, LLC (filed with the Company's
               Current Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                                                                  PAGE
 EXHIBIT NO.   DESCRIPTION                                                                                      NUMBER
- -------------  -------------------------------------------------------------------------------------------  -----------
<C>            <S>                                                                                          <C>
      10.4     Senior Secured Credit Agreement dated October 13, 1997 (filed with the Company's Current
               Report on Form 8-K on October 29, 1997 and incorporated herein by reference).
 
      10.5     Corporate Office Properties Trust 1998 Long Term Incentive Plan (included as Appendix D to
               the Proxy Statement/Prospectus forming a part of this Registration Statement).
 
      10.6     Lease Agreement between Blue Bell Investment Company, L.P. and Unisys Corporation dated
               March 12, 1997 with respect to Lot A.
 
      10.7     Lease Agreement between Blue Bell Investment Company, L.P. and Unisys Corporation dated
               March 12, 1997 with respect to Lot B.
 
      10.8     Lease Agreement between Blue Bell Investment Company, L.P. and Unisys Corporation dated
               March 12, 1997 with respect to Lot C.
 
      10.9     Amended and Restated Lease between South Brunswick Investors, L.P. and International
               Business Machines Corporation dated August 11, 1995, as amended.
 
      10.10    Agreement of Lease between South Brunswick Investors, L.P. and Teleport Communications
               Group Inc. dated February 20, 1996, as amended.
 
      10.11    Agreement of Lease between South Brunswick Investors, L.P. and Teleport Communications
               Group Inc. dated August 19, 1996.
 
      13.1     The Company's Annual Report on Form 10-KSB40 for the year ended December 31, 1996, as
               amended (other than the audited financial information of the Company set forth therein).
 
      13.2     The Company's Quarterly Report on Form 10-QSB for the quarter ended September 30, 1997.
 
      16.1     Letter to the Commission from Lurie, Besikof, Lapidus & Co., LLP dated November 4, 1997
               (filed with the Company's Current Report on Form 8-K on November 6, 1997, and incorporated
               herein by reference).
 
      21       Subsidiaries of Registrant.
 
      23.1     Consent of Cahill Gordon & Reindel (included in Exhibits 5.1 and 8.1).
 
      23.2     Consent of Coopers & Lybrand L.L.P.
 
      24.1     Powers of attorney (included on signature page to the Registration Statement).
 
      99.1     Form of proxy to be mailed to stockholders of the Company in connection with the Mergers.
</TABLE>

<PAGE>

                                                                    EXHIBIT 4.1

[Face of Certificate]

Number *0*                                                         Shares *0*

                                                      See Reverse for
                                                      Important Notice
                                                      on Transfer Restrictions
                                                      and Other Information

                     THIS CERTIFICATE IS TRANSFERABLE          CUSIP _________
                    IN THE CITIES OF _________________

                    CORPORATE OFFICE PROPERTIES TRUST
                     a Real Estate Investment Trust
              Formed Under the Laws of the State of Maryland

      THIS CERTIFIES THAT **Specimen**

is the owner of *Zero (0)**

fully paid and nonassessable common shares of beneficial interest, $0.01 par 
value per share, of

                    CORPORATE OFFICE PROPERTIES TRUST

(the "Trust"), transferable on the books of the Trust by the holder hereof in 
person or by its duly authorized attorney upon surrender of this Certificate 
properly endorsed.  This Certificate and the shares represented hereby are 
issued and shall be held subject to all of the provisions of the Declaration 
of Trust and Bylaws of the Trust and any amendments thereto.  This 
Certificate is not valid unless countersigned and registered by the Transfer 
Agent and Registrar.

IN WITNESS WHEREOF, the Trust has caused this Certificate to be executed on 
its behalf by its duly authorized officers.

DATED ____________________

Countersigned and Registered:
     Transfer Agent                     [IMPRESSION OF
      and Registrar                       TRUST SEAL]  _________________________
                                                              President

     By:______________________________                 _________________________
               Authorized Signature                           Secretary

<PAGE>
 
                                       2

[Reverse of Certificate]

                                IMPORTANT NOTICE

The Trust will furnish to any shareholder, on request and without charge, a 
full statement of the information required by Section 8-203(d) of the 
Corporations and Associations Article of the Annotated Code of Maryland with 
respect to the designations and any preference, conversion and other rights, 
voting powers, restrictions, limitations as to dividends and other 
distributions, qualifications, and terms and conditions of redemption of the 
shares of each class of beneficial interest which the Trust has authority to 
issue and, if the Trust is authorized to issue any preferred or special class 
in series, (i) the differences in the relative rights and preferences between 
the shares of each series to the extent set, and (ii) the authority of the 
Board of Trustees to set such rights and preferences of subsequent series.  
The foregoing summary does not purport to be complete and is subject to and 
qualified in its entirety by reference to the Declaration of Trust of the 
Trust, a copy of which will be sent without charge to each shareholder who so 
requests.  Such request must be made to the Secretary of the Trust at its 
principal office or to the Transfer Agent.

The shares represented by this Certificate are subject to restrictions on 
Beneficial Ownership, Constructive Ownership and Transfer for the purpose of 
the Trust's maintenance of its status as a real estate investment trust (a 
"REIT") under the Internal Revenue Code of 1986, as amended (the "Code").  
Subject to certain further restrictions and except as expressly provided in 
the Declaration of Trust of the Trust, (i) no Person may Beneficially Own or 
Constructively Own Common Shares of the Trust in excess of 9.8 percent (in 
value or number of shares) of the outstanding Common Shares of the Trust 
unless such Person is an Excepted Holder or a Permitted Holder (in which case 
the Excepted Holder Limit shall be applicable); (ii) no Person may 
Beneficially Own or Constructively Own Equity Shares of the Trust in excess 
of 9.8 percent of the value of the total outstanding Equity Shares of the 
Trust, unless such Person is an Excepted Holder or a Permitted Holder (in 
which case the Excepted Holder Limit shall be applicable);(iii) no Person may 
Beneficially Own or Constructively Own Equity Shares that would result in the 
Trust being "closely held" under Section 856(h) of the Code or otherwise 
cause the Trust to fail to qualify as a REIT; and (iv) no Person may Transfer 
Equity Shares if such Transfer would result in Equity Shares or the Trust 
being owned by fewer than 100 Persons.  

<PAGE>

                                       3

Any Person who Beneficially Owns or Constructively Owns or attempts to 
Beneficially Own or Constructively Own Equity Shares which cause or will 
cause a Person to Beneficially Own or Constructively Own Equity Shares in 
excess or in violation of the above limitations must immediately notify the 
Trust.  If any of the restrictions on transfer or ownership are violated, the 
Equity Shares represented hereby will be automatically transferred to a 
Trustee of a Charitable Trust for the benefit of one or more Charitable 
Beneficiaries.  In addition, upon the occurrence of certain events, attempted 
Transfers in violation of the restrictions described above may be void ab 
initio.  All capitalized terms in this legend have the meanings defined in 
the Declaration of Trust of the Trust, as the same may be amended from time 
to time, a copy of which, including the restrictions on transfer and 
ownership, will be furnished to each holder of Equity Shares of the Trust on 
request and without charge.  Such request must be made to the Secretary of 
the Trust at its principal office or to the Transfer Agent.

      KEEP THIS CERTIFICATE IN A SAFE PLACE.  IF IT IS LOST, STOLEN
      OR DESTROYED, THE TRUST WILL REQUIRE A BOND OF INDEMNITY AS A
         CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE.

     The following abbreviations, when used in the inscription on the face of 
this Certificate, shall be construed as though they were written out in full 
according to applicable laws or regulations:

TEN COM - as tenants in common           UNIF GIFT MIN ACT_____ Custodian _____
TEN ENT - as tenants by the entireties                    (cust)         (minor)
JT TEN  - as joint tenants with right       under Uniform Gifts to Minors Act of
          of survivorship and not as                     _______________________
          tenants in common                              (State)

                                Additional abbreviations may also be used though
                                not in the above list.

<PAGE>
 
                                       4

FOR VALUE RECEIVED, _____________________________ HEREBY SELLS, ASSSIGNS AND 
TRANSFERS UNTO

_______________________________________________________________________________
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

_______________________________________________________________________________
(PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE)

__________________________ (__________________________) shares of beneficial 
interest of the Trust represented by this Certificate and do hereby 
irrevocably constitute and appoint _______________________________ attorney 
to transfer the said shares on the books of the Trust, with full power of 
substitution in the premises.

Dated _________________________    ____________________________________________

                                   NOTICE: THE SIGNATURE TO THIS ASSIGNMENT 
                                   MUST CORRESPOND WITH THE NAME AS WRITTEN 
                                   UPON THE FACE OF THIS CERTIFICATE IN 
                                   EVERY PARTICULAR, WITHOUT ALTERNATION OR 
                                   ENLARGEMENT OR ANY CHANGE WHATEVER.

<PAGE>

                                                                     EXHIBIT 5.1




                                       February 5, 1998



Corporate Office Properties Trust
One Logan Square, Suite 1105
Philadelphia, Pennsylvania  19103

Ladies and Gentlemen:

     We have acted as counsel for Corporate Office Properties Trust (the
"Trust") in connection with the Registration Statement on Form S-4 (the
"Registration Statement"), filed by the Trust with the Securities and Exchange
Commission (the "Commission") for registration under the Securities Act of 1933,
as amended (the "Securities Act"), of common shares of beneficial interest, par
value $0.01 per share (the "Common Shares").  Capitalized terms used and not
otherwise defined herein shall have the meanings ascribed to such terms in the
Registration Statement.

     In connection therewith, we have examined, among other things, originals or
copies, certified or otherwise identified to our satisfaction, of the
Declaration of Trust and Bylaws of the Trust, resolutions of the Board of
Trustees of the Trust with respect to the filing of the Registration Statement
and such other documents as we have deemed necessary or appropriate for the
purpose of rendering this opinion.

     In our examination of documents, instruments and other papers, we have
assumed the genuineness of all signatures on original and certified documents
and the conformity to original and certified documents of all copies submitted
to us as conformed, photostatic or 

<PAGE>

                                       2

other copies.  As to matters of fact, we have relied upon representations of
officers of the Trust.

     Based upon the foregoing examination, information supplied and assumptions,
it is our opinion that the Common Shares have been duly authorized by all
necessary action of the Trust and when the Common Shares have been issued and
delivered in exchange for shares of Common Stock in accordance with the terms of
Merger Agreement, such Common Shares will be validly issued, fully paid and
non-assessable.

     We are attorneys admitted to practice in the State of New York.  We express
no opinion concerning the laws of any jurisdiction other than the laws of the
United States of America and the laws of the State of New York.  With respect to
matters of Maryland law, we have relied, without independent investigation, upon
the opinion of Ballard Spahr Andrews & Ingersoll, a copy of which is attached
hereto.
     
     We hereby consent to the reference to our firm in the Registration
Statement under the caption "Legal Matters" and to the inclusion of this opinion
as an exhibit to the Registration Statement.  Our consent to such reference does
not constitute a consent under Section 7 of the Securities Act as in consenting
to such reference we have not certified any part of the Registration Statement
and do not otherwise come within the categories of persons whose consent is
required under Section 7 or under the rules and regulations of the Commission
thereunder.

                                       Very truly yours,

                                       /s/ CAHILL GORDON & REINDEL


<PAGE>


                                       February 5, 1998

Corporate Office Properties Trust
One Logan Square, Suite 1105
Philadelphia, Pennsylvania 19103

               Re:  Corporate Office Properties Trust
                    Registration Statement on Form S-4


Ladies and Gentlemen:

    We have served as Maryland counsel to Corporate Office Properties Trust, 
a Maryland real estate investment trust (the "Company"), in connection with 
certain matters of Maryland law arising out of the registration of up to 
2,341,083 common shares (the "Shares") of beneficial interest, $.01 par value 
per share, of the Company ("Common Shares"), to be issued by the Company in 
connection with the mergers (the "Mergers") of (a) Corporate Office 
Properties Trust, Inc., a Minnesota corporation (the "Minnesota 
Corporation"), with and into COPT, Inc., a Maryland corporation and a 
wholly-owned subsidiary of the Minnesota Corporation (the "Maryland 
Corporation"), and (b) the Maryland Corporation with and into the Company, 
both pursuant to the Agreement and Plan of Merger, dated as of January 31, 1998
(the "Merger Agreement"), by and among the Company, the Minnesota Corporation 
and the Maryland Corporation, as described in the above-referenced 
Registration Statement, under the Securities Act of 1933, as amended (the 
"1933 Act"). Capitalized terms used but not defined herein shall have the 
meanings given to them in the Registration Statement.

    In connection with our representation of the Company, and as a basis for 
the opinion hereinafter set forth, we have examined originals, or copies 
certified or otherwise identified to our satisfaction, of the following 
documents (hereinafter collectively referred to as the "Documents"):

    1.  The Registration Statement in the form in which it was transmitted to 
the Securities and Exchange Commission (the "Commission") on February 5, 
1998, including the related form

<PAGE>

Corporate Office Properties Trust
February 5, 1998
Page 2

of Proxy Statement and Prospectus (the "Proxy Statement/Prospectus") included 
therein;

     2.  The Declaration of Trust of the Company, certified as of a recent 
date by the State Department of Assessments and Taxation of Maryland (the 
"SDAT");

     3.  The Bylaws of the Company, certified as of a recent date by its 
Secretary;

     4.  Resolutions adopted by the Board of Trustees, or a duly authorized 
committee thereof, of the Company relating to (i) the authorization, sale, 
issuance and registration of the Shares and (ii) the approval of the Merger 
Agreement, certified as of a recent date by the Secretary of the Company;

     5.  The Merger Agreement;

     6.  A certificate of the SDAT, as of a recent date, as to the good 
standing of the Company;

     7.  A certificate executed by an officer of the Company, dated the date 
hereof; and

     8.  Such other documents and matters as we have deemed necessary or 
appropriate to express the opinion set forth in this letter, subject to the 
assumptions, limitations and qualifications stated herein.

     In expressing the opinion set forth below, we have assumed, and so far 
as is known to us there are no facts inconsistent with, the following:

     1.  Each of the parties (other than the Company) executing any of the 
Documents has duly and validly executed and delivered each of the Documents 
to which such party is a signatory, and such party's obligations set forth 
therein are legal, valid and binding and are enforceable in accordance with 
all stated terms.

     2.  Each individual executing any of the Documents on behalf of a party 
(other than the Company) is duly authorized to do so.

     3.  Each individual executing any of the Documents, whether on behalf of 
such individual or another person, is legally competent to do so.

<PAGE>

Corporate Office Properties Trust
February 5, 1998
Page 3


     4.  All Documents submitted to us as originals are authentic. The form 
and content of the Documents submitted to us as unexecuted drafts do not 
differ in any respect relevant to this opinion from the form and content of 
such Documents as executed and delivered. All Documents submitted to us as 
certified or photostatic copies conform to the original documents. All 
signatures on all such Documents are genuine. All public records reviewed or 
relied upon by us or on our behalf are true and complete. All statements and 
information contained in the Documents are true and complete. There are no 
oral or written modifications or amendments to the Documents, by action or 
omission of the parties or otherwise.

     5.  All shares of stock of the Minnesota Corporation issued and 
outstanding immediately prior to the Merger are duly authorized, validly 
issued, fully paid and non-assessable.

     The phrase "known to us" is limited to the actual knowledge, without 
independent inquiry, of the lawyers at our firm who have performed legal 
services in connection with the issuance of this opinion.

     Based upon the foregoing, and subject to the assumptions, limitations 
and qualifications stated herein, it is our opinion that:

     1.  The Company is a real estate investment trust duly formed and 
existing under and by virtue of the laws of the State of Maryland and is in 
good standing with the SDAT.

     2.  The Shares have been duly and validly authorized and, when and if 
issued in accordance with the resolutions of the Board of Trustees of the 
Company authorizing their issuance and with the Merger Agreement, will be 
duly and validly issued, fully paid and nonassessable.

     The foregoing opinion is limited to the substantive laws of the State of 
Maryland and we do not express any opinion herein concerning any other law. 
We express no opinion as to compliance with the securities (or "blue sky") 
laws of the State of Maryland.

     We assume no obligation to supplement this opinion if any applicable law 
changes after the date hereof or if we become aware of any fact that might 
change the opinion expressed herein after the date hereof.

<PAGE>

Corporate Office Properties Trust
February 5, 1998
Page 4



      This opinion is being furnished to you for your submission to the 
Commission as an exhibit to the Registration Statement and, accordingly, may 
not be relied upon by, quoted in any manner to, or delivered to any other 
person or entity (other than Cahill Gordon Reindel, counsel to the Company)
without, in each instance, our prior written consent.

      We hereby consent to the filing of this opinion as an exhibit to the 
Registration Statement and to the use of the name of our firm in the section 
entitled "Legal Matters" in the Registration Statement.  In giving this 
consent, we do not admit that we are within the category of persons whose 
consent is required by Section 7 of the 1933 Act.

                                       Very truly yours,


<PAGE>

                                                                     Exhibit 8.1

                      [Letterhead of Cahill Gordon & Reindel]


                               February 4, 1998

                                                            (212) 701-3000


Corporate Office Properties Trust, Inc.
One Logan Square, Suite 1105
Philadelphia, PA  19103

Ladies and Gentlemen:

   We have acted as special tax counsel to Corporate Office Properties Trust, 
Inc., a Minnesota corporation (the "Company"), and Corporate Office 
Properties Trust, a Maryland real estate investment trust ("Trust"), in 
connection with the Proxy Statement/Prospectus filed by them with the 
Securities and Exchange Commission on February 5, 1998 (the "Proxy 
Statement/Prospectus").* We have been asked to provide our opinion as to 
certain federal income tax matters arising under the Internal Revenue Code of 
1986, as amended (the "Code"), relating to the Company's and the Trust's 
qualification for taxation as a real estate investment trust (a "REIT") for 
federal income tax purposes.

*  Capitalized terms used in this letter that are not otherwise defined 
   herein have the meanings ascribed to them in the Proxy Statement/Prospectus.
   References to the Company shall include the Trust following the Mergers.

<PAGE>


   The opinions set forth in this letter are based on relevant provisions of 
the Code, Treasury Regulations thereunder and interpretations of the 
foregoing as expressed in court decisions and administrative determinations 
as of the date hereof (or, where applicable, as in effect during earlier 
periods in question). These provisions and interpretations are subject to 
changes that might result in modifications of our opinions.

   For purposes of rendering the opinions contained in this letter, we have 
reviewed the Proxy Statement/Prospectus and such other documents, law and 
facts as we have deemed necessary.  In our review, we have assumed the 
genuineness of all signatures; the proper execution of all documents; the 
authenticity of all documents submitted to us as originals; the conformity to 
originals of all documents submitted to us as copies; and the authenticity of 
the originals of any copies.  

   These opinions also are premised on certain written representations made 
by the Company in a certificate dated the date hereof (the "Certificate"), 
the assumptions identified herein and the assumptions and representations 
described in the Proxy Statement/Prospectus under the heading "Federal Income 
Tax Considerations" (the "Tax Section").  For purposes of our opinions, we 
have not made an independent investigation of the matters relating to such 
assumptions or representations.  We have relied on the representation in the 
Certificate that the information contained in the Certificate and the Proxy 
Statement/Prospectus, or otherwise furnished to us, accurately describes all 
material facts relevant to our opinions.

   Based upon and subject to the foregoing, we are of the opinion that, for 
federal income tax purposes, (a) the Company has properly elected and 
otherwise qualified to be taxed as a REIT for the taxable years commencing on 
and after January 1, 1992, and ending prior to January 1, 1998, and (b) the 
proposed method of operation as described in the Proxy Statement/Prospectus 
and as represented by the Company will enable the Company to continue to 
satisfy the requirements for such qualification for subsequent taxable years. 
 We refer, however, to the discussion in the Proxy Statement/Prospectus under 
the heading "Federal Income Tax Considerations" regarding the possible impact 
of the Company's failure to make certain demands of information from its 
shareholders, as required by Treasury Regulations.

   We express no opinion other than the opinions expressly set forth herein.  
Our opinions are not binding on the Internal Revenue Service (the "IRS") and 
the IRS may disagree with our opinions.  Although we believe that our 
opinions would be sustained if challenged, there can be no assurance that 
this will be 

                                       2

<PAGE>

the case. Our opinions are based upon the law as it currently exists.  
Consequently, future changes in the law may cause the federal income tax 
treatment of the matters referred to herein and in the Tax Section to be 
materially and adversely different from that described above and in the Tax 
Section.  In addition, any variation in the facts from those set forth in the 
Proxy Statement/Prospectus, the representations contained in the Certificate 
or otherwise provided to us may affect the conclusions stated in our 
opinions.  Moreover, the Company's qualification and taxation as a REIT 
depend upon the Company's ability to meet, for each taxable year, various 
tests imposed under the Code.  These include, among others, tests relating to 
asset composition, operating results, distribution levels and diversity of 
stock ownership.  We will not review (and have not reviewed) the Company's 
compliance with these tests.  Accordingly, no assurance can be given that the 
actual results of the Company's operations for any taxable year will satisfy 
(or has satisfied) the requirements for the Company to maintain its 
qualification as a REIT.

   We hereby consent to the reference to our firm in the Proxy 
Statement/Prospectus under the caption "Federal Income Tax Considerations" 
and to the inclusion of this opinion as an exhibit to the Registration 
Statement of which the Proxy Statement/Prospectus forms a part.  Our consent 
to such reference does not constitute a consent under Section 7 of the 
Securities Act of 1933, as amended, as in consenting to such reference we 
have not certified any part of such Registration Statement and do not 
otherwise come within the categories of persons whose consent is required 
under Section 7 or under the rules and regulations of the Securities and 
Exchange Commission thereunder.

                                             Very truly yours,


                                             /s/ Cahill Gordon & Reindel
                                             ---------------------------




                                  3

<PAGE>


                                                                  Exhibit 10.6
                                                                         LOT A

                                   LEASE AGREEMENT


     THIS LEASE AGREEMENT (the "Lease"), is made as of March 12, 1997 between
BLUE BELL INVESTMENT COMPANY, L.P., a Delaware limited partnership, whose
address is c/o Clay W. Hamlin, III, The Shidler Group/Philadelphia, One Logan
Square, Suite 1105, Philadelphia, Pennsylvania 19103 (the "Landlord"), and
UNISYS CORPORATION, a Delaware corporation, whose address is P.O. Box 500,
Township Line and Union Meeting Roads, Blue Bell, Pennsylvania 19424 (the
"Tenant").

                                 W I T N E S S E T H:

     Landlord and Tenant entered into a Lease as of June 30, 1992 (the "First
Lease") for Tenant's leasing of certain real estate of which the Leased Premises
(defined below) are a part.  Pursuant to Paragraph 17.6 of the First Lease,
Landlord and Tenant are dividing the First Lease into Separate Leases (as
defined in the First Lease) to replace the First Lease.  This Lease is one of
the Separate Leases.  

      In consideration of the mutual covenants and agreements contained herein,
the parties, intending to be legally bound hereby, agree as follows:

                                      ARTICLE I

                                     DEFINITIONS

     1.1  Defined Terms.  For purposes of this Lease, the following terms shall
have the following meanings:

     "Additional Rent" shall have the meaning set forth in paragraph 3.2.

     "Appraiser" shall have the meaning set forth in Subparagraph 12.2(d).

     "Award" shall mean all compensation, sums, or anything of value awarded,
paid or received on a total or partial Condemnation.

     "Bankruptcy Code" shall have the meaning set forth in Subparagraph 13.7(g).

     "Base Annual Rent" shall have the meaning set forth in Paragraph 3.1.

     "Building" shall mean the building constituting a portion of the Leased
Premises, which building, as of the Commencement Date consists of approximately,
532,430 rentable square feet.


                                         -1-
<PAGE>

                                                                          LOT A

     "Commencement Date" shall mean the date of this Lease.

     "Condemnation" shall mean (i) any taking by the exercise of the power of
eminent domain, whether by legal proceedings or otherwise, or (ii) a voluntary
sale or transfer by Landlord to any condemnor, either under threat of
condemnation or while legal proceedings for condemnation are pending.

     "Condemnor" shall have the meaning set forth in Paragraph 12.2.

     "Date of Taking" shall mean the date the condemnor has the right to
possession of the property being condemned.

     "Environmental Indemnity" shall mean the Environmental Indemnity Agreement
of even date herewith between Landlord and Tenant and relating to the real
property constituting the Leased Premises.

     "Extension Periods" means the First Extension Period and the Second
Extension Period.

     "First Extension Period" shall have the meaning set forth in Subparagraph
2.2(b).

     "Fair Market Rent" shall mean the fair market rental value determined as if
the Leased Premises were available in the then rental market at the time such
determination is to be made for comparable buildings in comparable metropolitan
Philadelphia locations and assuming that Landlord has had a reasonable time to
locate a willing tenant who rents with the knowledge of the uses to which the
Leased Premises can be adapted without major structural, building systems or
interior renovation, and that neither Landlord nor the prospective tenant is
under any compulsion to rent.

     "Fair Market Value" shall mean the aggregate amount which would be
obtainable in an arm's length transaction at the time such determination is to
be made for the purchase of a fee simple title of the Leased Premises (assuming,
for valuation purposes only, that the same are free and clear of all mortgage or
similar liens) between an informed and willing buyer  under no compulsion to buy
and an informed and willing seller under no compulsion to sell.

     "HVAC" shall have the meaning set forth in Subparagraph 6.1(a).

     "Improvements" means the Landlord's Improvements and the Leasehold
Improvements.

     "Initial Lease Term" shall have the meaning set forth in Subparagraph
2.2(a).

                                         -2-
<PAGE>
                                                                          LOT A


     "Landlord's Improvements" shall mean all improvements, fixtures, equipment
and other property on the Leased Premises on the Commencement Date (except for
Trade Fixtures and Vendor Supplied Equipment) and all improvements, fixtures and
equipment constructed on the Leased Premises at Landlord's expense during the
Lease Term.  

     "Laws" shall mean any judicial decision, statute, constitution, ordinance,
resolution, regulation, rule, administrative order or other requirement of any
municipal, county, state, local, federal or other government agency or authority
having jurisdiction over the parties to this Lease or the Leased Premises, or
both, in effect either at the Commencement Date or any time during the Lease
Term, including, without limitation, any regulation, order or policy of any
quasi-official entity or body (e.g. board of fire examiners, public utilities or
special district).

     "Lease Term" shall mean the Initial Lease Term and, to the extent that
Tenant exercises its options to extend beyond the Initial Lease Term, shall also
include the First Extension Period and the Second Extension Period.

     "Leased Premises" shall mean the real property described in Exhibit A
hereto, including all Improvements thereon.

     "Leasehold Improvements" shall mean all improvements, additions,
alterations and fixtures installed on the Leased Premises at Tenant's expense
after the Commencement Date at any time which are permanently attached or
affixed to the Leased Premises. 

     "Lender" shall mean any beneficiary, mortgagee, secured party or other
holder of any deed of trust, mortgage or other written security device or
agreement affecting Landlord's interest in the Leased Premises and any note and
other obligations secured thereby and shall also mean any lender making a loan
or otherwise extending credit in connection with the purchase of the Leased
Premises from Tenant.

     "Less Than Substantially All" shall mean a portion of the Leased Premises
that is not all or Substantially All of the Leased Premises.

     "Minor Work" shall have the meaning set forth in Subparagraph 5.1(a).

     "Nondisturbance and Subordination Agreement" shall have the meaning set
forth in Subparagraph 17.3(b).

     "Operating Expenses" shall include all expenses of any nature relating to
the operation, maintenance, repair or upkeep of the Leased Premises, all of
which shall be borne by Tenant, including, without limitation, those expenses
referred to in Paragraphs 6.1, 6.2, 7.1 and 7.2.

                                         -3-
<PAGE>
                                                                          LOT A


     "Paragraph 12.2 Value" shall have the meaning set forth in Paragraph 12.2
hereof.

     "Present Value" shall mean with respect to any amount due at a future time
or times referred to in this Lease, the discounted value of such amount computed
by discounting such amount by Thirty-day LIBOR as of the date of such
determination.

     "Prime" shall mean the interest rate quoted by Citibank, N.A, New York, New
York, or its successors, as the publicly announced applicable lending rate for
its most creditworthy commercial customers.

     "Private Restrictions" shall mean all recorded covenants, conditions and
restrictions, agreements, other documents, reciprocal easement agreements and
any unrecorded documents known to Tenant, in effect on the Commencement Date, or
thereafter entered into or consented to by Tenant, or otherwise expressly
permitted by this Lease, affecting the Leased Premises from time to time.

     "Real Property Taxes" shall have the meaning set forth in Paragraph 8.1
hereof.

     "Rent" shall mean Base Annual Rent and Additional Rent.

     "Second Extension Period" shall have the meaning set forth in Subparagraph
2.2(b) hereof.

     "Subdivision Plan" shall mean that certain Subdivision Plan prepared by
Chambers Associates, Inc., Consulting Engineers and Surveyors, Center Square,
Pennsylvania, dated September 1, 1990, last revised February 25, 1991, and
recorded March 8, 1991 in Plan Book A-52 page 357.

     "Substantially All" shall mean a portion of the Leased Premises (that is,
less than all of the Leased Premises) which leaves remaining a balance that may
not be economically operated for the purpose for which the Leased Premises was
operated prior to the Condemnation in question, in Landlord's and Tenant's
reasonable judgment.

     "Thirty-day LIBOR" shall mean the London Interbank Offered Rate for thirty
(30) days, fixed at 11 a.m. (London time), as quoted to Landlord by Citibank,
N.A., New York, New York, or its successors.

     "Trade Fixtures" shall mean all movable equipment, furniture, furnishings
and other personal property belonging to Tenant on the Leased Premises or
installed in the Leased Premises by Tenant at Tenant's expense which are not
permanently attached to the Leased Premises; provided, however, that all of
Tenant's signs and Tenant's equipment not necessary for the operation of the
Leased Premises without regard to the particular business 


                                         -4-
<PAGE>
                                                                          LOT A

conducted thereon (i.e. systems and facilities not integral to the buildings and
other improvements) shall be Trade Fixtures whether or not permanently attached
or affixed to the Leased Premises.

     "Trust Agreement" means the Trust Agreement of even date with this Lease
among Landlord, Tenant and the United States Trust Company of New York, as
trustee, as such Trust Agreement may be amended and shall include any specific
successor Trust Agreement relating solely to this Lease and entered into
pursuant to Paragraph IX.B of the Trust Agreement.

     "Vendor Supplied Equipment" shall mean property on the Leased Premises
belonging to a third party, other than Landlord or Tenant.


                                     ARTICLE II

                               DEMISE AND ACCEPTANCE

     2.1. Demise of Premises.  Landlord hereby demises and leases to Tenant, and
Tenant hereby leases from Landlord, the Leased Premises for the Lease Term, upon
and subject to the terms and conditions of this Lease.  During the Lease Term,
Tenant shall have the nonexclusive right to use for vehicular access purposes
the access roads through Lot A, Lot B and Lot C shown on the Subdivision Plan in
common with the owners and tenants, and their respective invitees, of such Lot
A, Lot B and Lot C.

     2.2. Term.

          (a)  This Lease shall be for a period commencing on the Commencement
Date and ending at midnight on June 30, 2009 (the "Initial Lease Term").

          (b)  Provided that there exists no default by Tenant under this Lease
at the time of exercise, and at the commencement of the applicable Extension
Period, Tenant shall have the option to extend the Initial Lease Term for two
(2) periods, the first for sixty (60) months (referred to herein as the "First
Extension Period") and the second for fifty nine months (59) (the "Second
Extension Period").  Tenant may exercise its option only by written notice to
Landlord given (i) with respect to the First Extension Period, not later than
five hundred and forty seven (547) days prior to the expiration of the Initial
Lease Term, and (ii) with respect to the Second Extension Period, not less than
five hundred and forty seven (547) days prior to the expiration of the First
Extension Period.  If Tenant elects to exercise its first option to extend, the
First Extension Period shall commence on the first (1st) day 

                                         -5-
<PAGE>
                                                                          LOT A


following the expiration of the Initial Lease Term.  If Tenant elects to
exercise its second option to extend, the Second Extension Period shall commence
on the first (1st) day following the expiration of the First Extension Period. 
Tenant shall not have the option to extend the Lease Term for the Second
Extension Period unless Tenant have first exercised Tenant's option to extend
the Lease Term for the First Extension Period.  Such extensions of the Lease
Term shall be upon the same terms and conditions as set forth in this Lease,
except that Tenant shall not have any further rights to extend the Lease Term
beyond the Second Extension Period and the Base Annual Rent under this Lease
shall be increased and determined as set forth on Exhibit C.

     (c)  Acceptance of Premises.  Tenant confirms that Tenant accepted
possession of the Leased Premises in the condition existing as of the
Commencement Date.  Landlord makes no warranty, express or implied, as to the
condition of the Leased Premises or the suitability of the Leased Premises for
Tenant's use or for any other purpose.  Tenant acknowledges that it has had
possession of the Leased Premises prior to the date of this Lease and is fully
aware of and thoroughly familiar with the condition (including, without
limitation, environmental conditions) of the Leased Premises.


                                    ARTICLE III

                                        RENT

     3.1. Base Annual Rent.  Commencing on the Commencement Date and continuing
throughout the Lease Term, Tenant shall pay to Landlord as annual rent (the
"Base Annual Rent") the amounts determined in accordance with, and during the
periods indicated on Exhibit C hereto.  The Base Annual Rent for each period
indicated on Exhibit C shall be paid in equal quarterly installments in advance
on the first day of each quarterly period.  A quarterly period shall mean a
period of three (3) calendar months, and the quarterly periods shall commence on
April 1, 1997.  Tenant has paid Base Annual Rent through March 31, 1997.

     3.2. Additional Rent.  Commencing on the Commencement Date and continuing
throughout the Lease Term, Tenant shall pay, as additional rent, all other
amounts due and payable by Tenant under this Lease (collectively, the
"Additional Rent").

     3.3. Payment of Rent.  All Rent required to be paid in quarterly
installments shall be paid in advance on the first day of each quarterly period
during the Lease Term.  All Rent (including Base Annual Rent and Additional
Rent) shall be paid in lawful money of the United States, without any abatement,
deduction or offset whatsoever, except to the extent otherwise specifically
provided in Paragraph 8.5 (relating to tax contests), Paragraph 10.1 (with
respect to Landlord's negligence or willful misconduct), Paragraph 11.1
(relating to failure to make insurance proceeds available to Tenant), and
Paragraph 12.2 (relating to partial condemnation), and Paragraph 17.10 (relating
to indemnity for brokerage fees), and 


                                         -6-
<PAGE>
                                                                          LOT A


without any prior demand therefor, to Landlord at the address for Landlord first
above written or such other address or by wired funds (at Tenant's election) to
Landlord's account, as Landlord may designate by written notice to Tenant from
time to time (including, without limitation to a Lender, or Lenders) or as
otherwise specified by the provisions of this Lease.  Tenant's obligation to pay
Base Annual Rent shall be prorated to account for a partial quarterly period at
the commencement and the expiration or sooner termination of the Lease Term and
the prorated amount for the partial period at the commencement of the Lease Term
shall be due and payable on the Commencement Date.  Tenant's obligation to pay
Additional Rent shall be prorated at the expiration or sooner termination of the
Lease Term.

     3.4. Net Lease.  This Lease is what is commonly called a "Triple Net
Lease," it being understood that Landlord shall receive the Rent free and clear
of any and all other impositions, taxes, liens, charges or expenses of any
nature whatsoever in connection with the ownership, operation, maintenance
(whether structural or otherwise), repair, occupancy, and use of the Leased
Premises (excluding payments of any mortgage or obligations or charges for
capital improvements or other matters incurred by Landlord and not required to
be made by Tenant under this Lease).  Except as may be otherwise specifically
provided in this Paragraph, (relating to Landlord's mortgages or other
obligations) , Paragraph 8.5 (relating to tax contests), Paragraph 11.1
(relating to failure to make insurance proceeds available to Tenant), Paragraph
10.1 (with respect to Landlord's negligence or willful misconduct), Paragraph
12.2 (relating to partial condemnation), and Paragraph 17.10 (relating to
indemnity for brokerage fees), Landlord shall not be responsible for any costs,
expenses, or charges of any kind or nature respecting the Leased Premises. 
Landlord shall not be required to render any services of any kind to Tenant or
to the Leased Premises.


                                     ARTICLE IV

                               USE OF LEASED PREMISES

     4.1. Use of Premises; Compliance with Laws.  Tenant shall use the Leased
Premises only for the purposes permitted by Laws and in accordance with Private
Restrictions.  Tenant shall not use or permit any person to use the Leased
Premises for any use or purpose in violation of any Laws or Private
Restrictions, including, without limitation, Laws pertaining to the
environmental condition of the Leased Premises.  Tenant shall, at its own cost
and expense, abide by and promptly observe and comply with all Laws and Private
Restrictions applicable to the Leased Premises.  Tenant shall not do or permit
anything to be done in or on the Leased Premises which might cause damage to the
Leased Premises or might place any loads upon any floor, wall or ceiling which
might damage or endanger any portion of the Leased Premises.  Tenant shall not
operate any equipment in or on the Leased Premises in a manner which will injure
the Leased Premises, which will overload existing electrical systems or
mechanical equipment servicing the Leased Premises, or which will 

                                         -7-
<PAGE>
                                                                          LOT A


impair the efficient operation of the sprinkler system (if any) within the
Leased Premises.  Tenant shall not commit nor permit to be committed any waste
upon the Leased Premises, and Tenant shall keep the Leased Premises in a
condition free of any nuisances.

     4.2. Insurance Requirements.  Tenant shall not use the Leased Premises in
any manner or for any purpose (other than the manner in which and the purposes
for which the Leased Premises are used on the Commencement Date), or permit any
use of the Leased Premises or any act to be committed on the Leased Premises, if
any such use or act will cause a cancellation of any insurance policy covering
the Leased Premises.  Tenant shall not sell, keep or use, or permit to be kept,
used, or sold, in or about the Leased Premises any article which may be
prohibited by the standard form of fire insurance policy.  Tenant shall, at its
sole cost and expense, comply with all requirements of any insurance company,
insurance underwriter, or Board of Fire Underwriters which are necessary to
maintain the insurance coverage required under this Lease.

                                     ARTICLE V
                                          
                     TRADE FIXTURES AND LEASEHOLD IMPROVEMENTS
                                          
     5.1. Leasehold Improvements.

          (a)  Except for Minor Work, Tenant shall not construct any Leasehold
Improvements or otherwise alter the Leased Premises without Landlord's prior
approval, and not until Landlord shall have first approved the plans and
specifications therefor, which approvals shall not be unreasonably withheld,
conditioned or delayed.  If Landlord does not object to proposed Leasehold
Improvements within fifteen (15) business days after being presented with plans
and specifications therefor in accordance with this Paragraph 5.1, such proposed
Leasehold Improvements shall be deemed approved.  All such Leasehold
Improvements and alterations (including Minor Work) and all demolition shall be
performed, constructed and installed by Tenant at Tenant's expense, in
substantial compliance with the approved plans and specifications therefor (if
such plans and specifications are required hereunder) and in strict accordance
with all Laws and Private Restrictions.  All such construction and installation
and demolition shall be done in a good and workmanlike manner using materials of
good quality.  Tenant shall not commence construction of any Leasehold
Improvements or alterations or commence any demolition until (i) all required
governmental approvals and permits shall have been obtained and (ii) all
requirements regarding insurance imposed by this Lease shall have been
satisfied.  The term "Minor Work" as used herein, shall mean any construction of
Leasehold Improvements not involving any structural change or substantial change
in the character of the Improvements, and involving a cost of less than Two
Hundred Thousand Dollars ($200,000.00); provided that, for purposes of
determining such cost, multiple construction or alteration projects shall be
aggregated to the extent they are related to each other, whether undertaken
simultaneously or sequentially.  All Leasehold 

                                         -8-
<PAGE>
                                                                          LOT A


Improvements shall remain the property of Tenant during the Lease Term but shall
not be damaged, altered or removed from the Leased Premises.  If any Minor Work
involves a cost of less than Fifty Thousand Dollars ($50,000), Tenant shall
neither be required to obtain Landlord's prior consent therefor nor shall Tenant
be required to give any prior notice thereof to Landlord.  If any Minor Work
involves a cost of in excess of Fifty Thousand Dollars ($50,000), but less than
Two Hundred Thousand Dollars ($200,000), Tenant shall not be required to obtain
Landlord's prior consent therefor but shall give Landlord ten (10) days prior
written notice of its intention to commence such construction or alteration
together with any then available plans and specifications.  Following completion
of construction or alteration of any Leasehold Improvement, Tenant shall furnish
to Landlord copies of all plans, specifications or drawings prepared by Tenant
in connection with such Leasehold Improvement.  At the expiration or sooner
termination of the Lease Term, all Leasehold Improvements shall be surrendered
to Landlord as a part of the Leased Premises and shall then become Landlord's
property, and Landlord shall have no obligation to reimburse Tenant for all or
any portion of the value or cost thereof; provided, however, that if Landlord
shall require Tenant to remove any Leasehold Improvements (not constructed or
installed in accordance with Paragraph 5.1 or Paragraph 6.2), in accordance with
the provisions of Paragraph 15.1, then Tenant shall so remove such Leasehold
Improvements prior to the expiration or sooner termination of the Lease Term.

          (b)  In connection with any proposed Leasehold Improvements or other
alterations or additions or work or demolition by Tenant and in addition to
other conditions that may be reasonably imposed by Landlord as a condition to
Landlord's approval, Tenant shall secure all necessary licenses and permits; use
reasonable efforts to secure effective waivers from all persons or firms who
will be furnishing labor or materials, waiving the right to file any mechanics
lien against the Leased Premises or interest of Landlord or Tenant therein;
cause any contractors and subcontractors to carry workmen's compensation
insurance in statutory amounts and comprehensive public liability insurance in
accordance with current industry practice and use reasonable efforts to obtain
and deliver to Landlord certificates of all such insurance.

          (c)  All Leasehold Improvements, demolition, repairs, alterations,
additions and improvements performed by Tenant shall be done in a good and
workmanlike manner in compliance with all Laws, Private Restrictions, and the
reasonable requirements of the insurers of the Leased Premises.  During the
performance of any such work by Tenant, Tenant shall obtain and maintain
customary comprehensive general public liability, property damage, builders and
all risk, workmen's compensation and other insurance covering Landlord, Tenant
and each Lender whose mortgage so requires coverage.  Tenant shall promptly pay
for such work and shall discharge any and all liens filed against the Leased
Premises arising therefrom.


                                         -9-
<PAGE>
                                                                          LOT A


          (d)  Tenant shall not permit any mechanics or other liens or claims
thereof to exist upon the Leased Premises or any portion thereof arising out of
the acts, omissions to act, or contracts of Tenant, or anyone claiming by,
through, or under Tenant or for whom Tenant is responsible.  Tenant shall remove
or have removed or remove or have removed by bonding over any mechanics',
materialman's or other lien or claim thereof filed against the Leased Premises,
any other portion thereof, or any other property owned by Landlord, by reason of
work, labor, services or materials provided for or at the request of Tenant or
for any contractor or subcontractor employed by Tenant, or otherwise arising out
of Tenant's use of the Leased Premises and shall exonerate, protect, defend and
hold free and harmless Landlord against and from any and all such claims or
liens.  All persons and other entities are hereby notified that the interest of
Landlord in the Leased Premises shall not be subject to liens for Leasehold
Improvements made by or for Tenant, and that Tenant has no right, power, or
authority to subject the Leased Premises or any part thereof or Landlord's
interest therein, to any mechanics', materialman's or other similar liens.

          (e)  Tenant, with Landlord's prior written consent which shall not be
unreasonably withheld, conditioned or delayed, may, at Tenant's own risk and
expense, lawfully erect or place its standard signs concerning the business of
Tenant within the buildings containing the Leased Premises and/or on the
exterior walls thereof and/or elsewhere on the Leased Premises, and Tenant
agrees to maintain said signs in a good state of repair; to save Landlord
harmless from loss, cost or damages as a result of the erection, maintenance,
existence or removal of such signs; and to repair any damage which may have been
caused by the erection, existence, maintenance or removal of such signs.  At the
end of the Lease Term, Tenant agrees to remove such signs at its expense. 
Landlord hereby expressly consents to all Tenant's signs on the Leased Premises
on the Commencement Date.

     5.2. Alterations Required by Law.  Tenant shall, at its sole cost, make any
alteration, addition, replacement, or change of any sort, whether structural or
otherwise, to the Leased Premises that is required by any Laws.

     5.3. Landlord's Improvements.  All Landlord's Improvements shall become a
part of the realty and belong to Landlord.

                                     ARTICLE VI

                          REPAIR, MAINTENANCE AND SECURITY

     6.1. Tenant's Obligation To Maintain.

          (a)  Tenant shall, at all times and at Tenant's sole cost and expense,
clean, keep, and maintain in good order, condition, and repair the Leased
Premises and every part thereof and all fixtures and Improvements therein and
thereon, through regular inspections 

                                         -10-
<PAGE>
                                                                          LOT A


and servicing, and make replacements of such equipment, systems and building
components as reasonably necessary throughout the Lease Term, including without
limitation (i) all plumbing and sewage facilities (including all sinks, toilets,
faucets and drains), including repair of leaks around ducts, pipes, vents, or
other parts of the heating, ventilation and air conditioning systems ("HVAC") or
plumbing system, (ii) all fixtures, interior walls, floors, ceilings, windows,
doors, entrances, plate glass, showcases, and skylights, (iii) all electrical
facilities and all equipment including all lighting fixtures, lamps, bulbs and
tubes, fans, vents, exhaust equipment and systems, (iv) all fire extinguisher
equipment, (v) any landscaping (including any necessary replanting) and
irrigation systems, (vi) all parking areas (including any necessary painting,
striping, patching or resurfacing), (vii) the exterior, floors and roof of all
buildings contained within the Leased Premises (including any necessary painting
or resurfacing of walls and any patching, resurfacing or replacement of roofs to
preserve the same or to repair leaks) and (viii) all structural parts of the
Improvements.  All glass, both interior and exterior, is the sole responsibility
of Tenant, and any broken glass shall promptly be replaced by Tenant at Tenant's
expense with glass of the same kind (to the extent permitted by applicable
building codes), size and quality.  Tenant shall be responsible for the
maintenance, repair and replacement when necessary of all HVAC equipment which
serves the Leased Premises and shall keep the same in good condition through
regular inspection and servicing.  Tenant shall promptly remove all snow, ice,
and debris from all sidewalks, curbs, parking areas and roadways located upon or
adjacent to the Leased Premises.  At the expiration or other termination of this
Lease, Tenant will deliver the Leased Premises in good condition and repair,
normal wear and tear excepted.

          (b)  All repairs and replacements required of Tenant hereunder shall
be promptly made with materials of good quality.  If the work results in a
change in the character of the Improvements or affects the structural parts of
the Leased Premises or if the estimated cost of any item of repair or
replacement is in excess of Two Hundred Thousand Dollars ($200,000.00), Tenant
shall first obtain Landlord's written approval, which shall not be unreasonably
withheld, conditioned or delayed, provided such repairs and replacements shall
otherwise comply with the requirements of Article V.

          (c)  Tenant shall not be required to replace the roof on any of the
Improvements or resurface any of the parking lots on the Leased Premises within
the twelve (12) months prior to the expiration of the Lease Term, provided that
Tenant shall have otherwise performed its obligations under this Paragraph 6.1.

     6.2. Specific Capital Improvements and Replacements.  Tenant agrees to make
the capital improvements and replacements described in and at the times set
forth in Exhibit B and shall not be required to obtain Landlord's consent
therefor, except as provided in the next succeeding sentence.  If any capital
improvements or replacements to be made pursuant to this Paragraph 6.2 results
in a change in the character of the Improvements or affects the structural parts
of the Leased Premises, or if the estimated cost of any item of improvement 

                                         -11-
<PAGE>
                                                                          LOT A


or replacement is in excess of Two Hundred Thousand Dollars ($200,000), Tenant
shall first obtain Landlord's written approval therefor, which shall not be
unreasonably withheld, conditioned or delayed.  Tenant's obligations to make
capital improvements and replacements pursuant to this Paragraph 6.2 shall
terminate upon Tenant obtaining a BBB - or higher rating from both Moody's
Investor's Services, Inc. (and its successors) and Standard and Poor's
Corporation (and its successors) for Tenant's general obligation bonds or
equivalent senior debt obligations and retaining that rating for twelve (12)
consecutive months.

     6.3. Security.  Tenant shall employ and coordinate the services of
reasonably skilled and responsible persons as security guards, janitors and
maintenance workers, or such other staff, as may be necessary, in Tenant's
reasonable judgment, for the security, protection and maintenance of the Leased
Premises.  Such individuals shall be under the supervision, direction and
control of Tenant who shall fix their compensation and have the exclusive right
to employ and terminate employment of any and all such individuals or such
individuals employer; such individuals shall not be or be deemed to be the
employees of Landlord for any purpose whatsoever.


                                     ARTICLE VII

                            WASTE DISPOSAL AND UTILITIES

     7.1. Waste Disposal.  Tenant shall store its waste in accordance with all
applicable Laws either inside the Building) contained within the Leased Premises
or within outside trash enclosures which are designed for such purpose.  All
entrances to such outside trash enclosures shall be kept closed, and waste shall
be stored in such manner as not to be visible from the exterior of such outside
enclosures.  Tenant shall cause all of its waste to be regularly removed from
the Leased Premises at Tenant's sole cost.  Tenant shall keep all fire corridors
and mechanical equipment rooms in the Leased Premises free and clear of all
obstructions at all times.

     7.2. Utilities.  Tenant shall promptly pay, as the same become due, all
charges for water, gas, electricity, telephone, sewer service, waste pick-up,
and any other utilities, materials or services furnished directly or indirectly
to or used by Tenant on or about the Leased Premises during the Lease Term. 
Landlord, upon reasonable prior notice to Tenant, and on not more than a
quarterly basis, may inspect Tenant's records of payment of utilities.

                                         -12-
<PAGE>
                                                                          LOT A


                                    ARTICLE VIII

                                REAL PROPERTY TAXES

     8.1. Real Property Taxes Defined.  The term "Real Property Taxes" as used
in this Lease shall mean (i) all taxes, assessments, levies, and other charges
of any kind or nature whatsoever, general and special, foreseen and unforeseen
(including all installments of principal and interest required to pay any
general or special assessments for public improvements and any increases
resulting from reassessments caused by any change in ownership) now or hereafter
imposed by any governmental or quasi-governmental authority or special district
having the direct or indirect power to tax or levy assessments, which are levied
or assessed against, or with respect to the value, occupancy or use of, all or
any portion of the Leased Premises (as now constructed or as may at any time
hereafter be constructed, altered, or otherwise changed) or Landlord's interest
therein; any Improvements located within the Leased Premises (regardless of
ownership); the fixtures, equipment and other property of Landlord, real or
personal, that are an integral part of and located on the Leased Premises; or
parking areas, public utilities, or energy within the Leased Premises; and (ii)
all charges, levies or fees imposed by reason of environmental regulation or
other governmental control of the Leased Premises.  If at any time during the
Lease Term the taxation or assessment of the Leased Premises prevailing as of
the Commencement Date shall be altered so that in lieu of or in addition to any
Real Property Taxes described above, there shall be levied, assessed or imposed
(whether by reason of a change in the method of taxation or assessment, creation
of a new tax or charge, or any other cause) an alternative or additional tax or
charge (i) on the value, use or occupancy of the Leased Premises or Landlord's
interest therein, or (ii) on or measured by the gross receipts, gross income or
gross rentals from the Leased Premises, on Landlord's business of leasing the
Leased Premises, or computed in any manner with respect to the operation of the
Leased Premises, then any such alternate or additional tax or charge, however
designated, shall be included within the meaning of the term "Real Property
Taxes" for purposes of this Lease.  If any Real Property Taxes are based upon
property or rents unrelated to the Leased Premises, then only that part of such
Real Property Taxes that is fairly allocable to the Leased Premises shall be
included within the meaning of the term "Real Property Taxes."  Notwithstanding
the foregoing, the term "Real Property Taxes" shall not include estate,
inheritance, transfer, gift or franchise taxes of Landlord or Landlord's
federal, state or local income tax capital stock tax or wealth tax.

     8.2. Tenant's Obligation To Pay.  Landlord and Tenant agree that all bills
for Real Property Taxes shall be sent directly by the appropriate government or
quasi government authorities to Tenant.  As Additional Rent, Tenant shall pay
directly to the appropriate governmental or quasi-governmental authorities all
Real Property Taxes no later than ten (10) days before such Real Property Taxes
become payable with any interest or penalty for late payment.  Tenant shall pay
such taxes before the due date therefor and shall be responsible 

                                         -13-
<PAGE>
                                                                          LOT A


for payment of any interest or penalties with respect thereto.  Concurrently
with any such payment, Tenant shall supply Landlord with written evidence that
all Real Property Taxes then due and payable shall have been paid in accordance
with this Article.  Tenant shall only be required to pay those Real Property
Taxes or installments thereof which are payable with respect to periods during
the Lease Term, with appropriate proration at the end of the Lease Term.

     8.3. Taxes on Tenant's Leased Premises.  Tenant shall pay by the due date
therefor any and all taxes, assessments, license fees, and public charges
levied, assessed, or imposed against Tenant or Tenant's interest in this Lease
or Trade Fixtures which become payable during the Lease Term.

     8.4. Tax Segregation.  The Building is separately assessed and taxed as of
the Commencement Date.

     8.5. Tax Contest.  In the event that Tenant shall desire in good faith to
contest or otherwise review by appropriate legal or administrative proceeding
any Real Property Taxes, Tenant shall, no later than thirty (30) days after
Tenant receives notice of the Real Property Taxes assessment Tenant desires to
contest, give Landlord written notice of its intention to do so.  Tenant may
withhold payment of the Real Property Taxes being contested if, but only if,
both (i) nonpayment is permitted during the pendency of such proceedings without
the foreclosure of any tax lien or the imposition of any fine or penalty and
(ii) Tenant shall obtain and furnish Landlord with a bond or other security
device, and otherwise comply with the requirements of the Lenders, sufficient to
protect Landlord's interest in the Leased Premises in an amount not less than
one hundred percent (100%) of the amount contested.  Any such contest shall be
prosecuted to completion (whether or not this Lease shall have expired or
terminated in the interim) and shall be conducted without delay and solely at
Tenant's expense.  Tenant shall indemnify, defend, and hold harmless Landlord
from and against any and all expense, liability or damage resulting from such
contest or other proceeding.  At the request of Tenant, Landlord shall join in
any contest or other proceedings which Tenant may desire to bring pursuant to
this Paragraph 8.5. Tenant shall pay all of Landlord's reasonable expenses
(including attorneys' fees) arising out of such joinder.  Within thirty (30)
days after the final determination of the amount due from Tenant with respect to
the Real Property Taxes contested, Tenant shall pay the amount so determined to
be due, together with all costs, expenses and interest, whether or not this
Lease shall have then expired or terminated.  Any recovery or refund of Real
Property Taxes in accordance with this Subparagraph 8.5 shall be the property of
and shall be paid to Tenant.


                                         -14-
<PAGE>

                                                                         LOT A


                                   ARTICLE IX
                                          
                                   INSURANCE
                                          
     9.1. Tenant's Insurance.  Tenant shall, at its own expense and cost, 
maintain the following policies of insurance in full force and effect during 
the Lease Term:

          (a)  "All risk" insurance, including but not limited to, loss or 
damage occasioned by fire, the perils included in the so-called extended 
coverage endorsement, vandalism and malicious mischief, sprinkler leakage, 
collapse, explosion, earthquake, flood and water damage and containing 
Replacement Cost, Lease Amount and Demolition and Increased Cost due to 
Ordinance endorsements covering the Leased Premises and all replacements and 
additions thereto, and all fixtures and equipment.  The foregoing coverage 
shall be provided in amounts sufficient to provide one hundred percent (100%) 
of the full replacement cost of the Leased Premises, and shall be determined 
from time to time, but not more frequently than once in any twenty-four (24) 
calendar months, at Tenant's expense, at the request of Landlord, by any 
appraiser selected by Tenant and approved by Landlord and the insurance 
carrier, which approval by Landlord shall not be unreasonably withheld, 
conditioned or delayed.

          (b)  comprehensive general liability insurance applying to the use 
and occupancy of the Leased Premises, or any part thereof, and the business 
operated by Tenant on the Leased Premises, with coverages including, but not 
limited to, premises operations, explosion, collapse, sprinkler leakage, and 
products and completed operations, blanket contractual, Broad Form property 
damage, and independent contractors.  Such insurance shall include Broad Form 
Contractual liability insurance coverage insuring all of Tenant's indemnity 
obligations under this Lease.  The general liability coverage shall have a 
minimum combined single limit of liability of at least One Million Dollars 
($1,000,000.00) and a general aggregate limit of One Million Dollars 
($1,000,000.00). Tenant shall carry an umbrella policy in the amount of at 
least twenty-five million dollars ($25,000,000).

          (c)  Workers' compensation insurance in accordance with applicable 
Law and employers' liability insurance.

          (d)  Boiler and Machinery Broad Form policy covering explosion 
insurance in respect of steam and pressure boilers and similar apparatus, if 
any, located on the Leased Premises in an amount equal to one hundred percent 
(100%) of the full replacement cost of the Leased Premises.

          (e)  Such other insurance with respect to the Leased Premises as 
Landlord or any Lender, from time to time may reasonably request against such 
insurable hazards or 


                                      -15-

<PAGE>

                                                                         LOT A


risks which at the time in question are commonly insured against in the case of
property similar to, or whose use is similar to the use of, the Leased Premises.

     9.2. Policies.  Tenant shall furnish to Landlord on the Commencement 
Date and thereafter within forty five (45) days prior to the expiration of 
each such policy, certificates of insurance issued by the insurance carrier 
of each policy of insurance required under this Lease showing applicable 
coverages.  Each certificate shall expressly provide that such policies shall 
not be cancellable or subject to reduction of coverage or otherwise be 
subject to modification except after thirty (30) days' prior written notice 
to the parties named as insureds herein and other certificate holders.  At 
Landlord's request, Tenant shall deliver abstracts of such policies to 
Landlord and Landlord's designees holding an interest in the Leased Premises. 
 Landlord, Landlord's successors and assigns and any designee of Landlord 
holding any interest in the Leased Premises, including the holder of any fee, 
interest or mortgage, shall be additional named insureds under each policy of 
insurance maintained by Tenant, except for workers' compensation insurance.  
All insurance policies carried by Tenant pursuant to this Article IX shall be 
issued by insurance companies with a rating of "Good" or better as rated in 
Best's Insurance Guide.  Any deductible amounts under any insurance policies 
required hereunder shall be subject to Landlord's prior written approval if 
such deductibles would exceed One Hundred Thousand Dollars ($100,000.00) as 
to property hazard coverage, One Million Dollars ($1,000,000.00) as to 
liability coverage, and Ten Million Dollars ($10,000,000.00) as to 
earthquake.  All policies shall be written to apply to property damage, 
personal injury and other covered loss, however occasioned, occurring during 
the policy term and shall be endorsed to add Landlord and any designee of 
Landlord having any interest in the Leased Premises as an additional insured 
(provided that such endorsement shall not include Landlord or its agents, 
employees or contractors as additional insureds for acts of negligence or 
willful misconduct by Landlord included within Landlord's liability under 
Paragraph 10.1 and excluded from Tenant's indemnity pursuant to Paragraph 
10.2) and to provide that such coverage shall be primary and that any 
insurance maintained by Landlord shall be excess insurance only.  All such 
insurance shall provide for severability of interest; shall provide that an 
act or omission of one of the named insureds shall not reduce or avoid 
coverage to the other named insureds; and shall afford coverage for all 
claims based on acts, omissions, injury and damage, which claims occurred or 
arose (or the onset of which occurred or arose) in whole or in part during 
the policy period.  If Tenant shall fail to procure any insurance required 
under this Lease or to deliver the certificates or policies required under 
this Paragraph 9.2, Landlord may, at its option and in addition to Landlord's 
other remedies in the event of a default by Tenant hereunder, procure such 
insurance for the account of Tenant, and the cost thereof shall be paid to 
Landlord as Additional Rent on demand.  Claims under all property insurance 
policies covering Landlord's buildings and Landlord's Improvements shall be 
adjusted with the insurance company or companies subject to Landlord's 
approval.

                                      -16-

<PAGE>

                                                                         LOT A


     9.3. Release and Waiver of Subrogation.  The parties hereto release each 
other, and their respective authorized representatives, from any claims for 
injury to any persons or damage to property that are caused by or result from 
risks insured against under any insurance policies carried by the parties and 
in force at the time of such damage, but only to the extent such claims are 
covered by such insurance.  This release shall be in effect only so long as 
the applicable insurance policies contain a clause to the effect that this 
release shall not affect the right of the insured to recover under such 
policies.  Each party shall cause each insurance policy obtained by it to 
provide that the insurance company waives all rights of recovery by way of 
subrogation against either party in connection with any damage covered by 
such policy.

     9.4. Landlord's Insurance Option.  Landlord, at Landlord's option, and 
upon prior notice to Tenant, may procure, at Tenant's sole cost, the 
insurance required by this Article IX, or such other insurance as may be 
deemed necessary or desirable by Landlord, provided that the cost of such 
insurance to Tenant shall not exceed the cost that would have been imposed 
upon Tenant for insurance required under this Article IX had Tenant procured 
such insurance.  If Landlord elects to procure such insurance, Tenant shall 
be relieved of Tenant's obligation to procure such insurance under this 
Article IX, but Tenant shall remain obligated to pay the cost of such 
insurance in accordance with the requirements of this Article IX.  Landlord 
shall provide copies of such insurance to Tenant.  At any time upon at least 
thirty (30) days' prior notice to Tenant, Landlord may stop procuring 
insurance under this Paragraph 9.4, in which case Tenant shall be responsible 
for maintaining insurance in accordance with the requirements of this Article 
IX.

                                   ARTICLE X

                           LIMITATION ON LANDLORD'S
                           LIABILITY AND INDEMNITY

     10.1 Limitation on Landlord's Liability.  Except for loss proximately 
caused by Landlord or Landlord's agents', employees', or contractors' 
negligence or willful misconduct, Landlord shall not be liable to Tenant, nor 
shall Tenant be entitled to exercise any other rights or remedies, for any 
injury to Tenant, its agents, employees, contractors or invitees, or any 
other person or entity claiming, by, through, or under Tenant for damage to 
Tenant's property or loss to Tenant's business resulting from any cause, 
including, without limitation, any (i) failure or interruption of any HVAC or 
other utility system or service; (ii) governmental regulation, including a 
rationing or other control of utility services or use of the Leased Premises; 
or (iii) penetration of water into or onto any portion of the Leased Premises 
through roof leaks or otherwise.

     10.2. Indemnification of Landlord.  Tenant shall not do or permit any 
act or thing on or about the Leased Premises which may subject Landlord to 
any liability or responsibility 

                                      -17-

<PAGE>

                                                                         LOT A


for injury, damages to persons or property or to any liability by reason of 
any violation of Laws or of any legal requirement of any public authority or 
Private Restrictions but shall exercise such control over the Leased Premises 
as to fully protect Landlord against any such liability.  Tenant shall hold 
harmless, indemnify and defend Landlord, and its employees, agents and 
contractors, and any other person or entity claiming by, through or under 
Landlord, from all liability, penalties, losses, damages, costs, expenses, 
causes of action, claims and/or judgments (including reasonable attorneys' 
fee) arising by reason of any death, bodily injury, personal injury or 
property damage (i) resulting from any cause or causes whatsoever (other than 
the negligence or willful misconduct of Landlord or Landlord's agents, 
employees or contractors to the extent of Landlord's liability under 
Paragraph 10.1) occurring in, on or about or resulting from an occurrence in, 
on or about the Leased Premises during the Lease Term, or (ii) resulting from 
the acts or omissions of Tenant, its agents, employees and contractors, (iii) 
resulting from any failure by Tenant to perform and observe its covenants and 
obligations under this Lease, or (iv) any other matter or thing arising from 
Tenant's occupancy or use of, or any action or omission of, Tenant, its 
employees, agents, contractors, invitees or visitors on, about, adjacent to, 
or relating to activities at, or the use of the Leased Premises.  The 
provisions of this Article shall survive the expiration or sooner termination 
of this Lease.

                                  ARTICLE XI

                           DAMAGE TO LEASED PREMISES

     11.1. Duty To Restore.  If the Leased Premises are damaged by any 
casualty after the Commencement Date, Tenant shall restore fully the Leased 
Premises to substantially the same condition that existed prior to such 
casualty.  All insurance proceeds shall be promptly made available to Tenant 
for the payment of the repairs and restoration of such damage or casualty; 
provided that such proceeds may be made available to Tenant subject to 
reasonable conditions and customary construction loan disbursement 
procedures, including provision by Tenant of an independent architect's 
certification of the cost of such repair or restoration, together with plans 
and specifications therefor and shall be deemed made available for such 
repair or restoration if they are made available through and are disbursed 
under such reasonable conditions and customary construction loan disbursement 
procedures.

     In the event of damage to or destruction of the Leased Premises which 
results in Tenant's loss of use of the Leased Premises, or a portion thereof, 
and the cost of repair and replacement is less than one million dollars 
($1,000,000), as shall be established by Tenant to Landlord by written notice 
accompanied by an independent architect's certification of cost, then if 
insurance proceeds are not made available to Tenant for repair and 
restoration within thirty (30) days from the date that any such proceeds 
shall have been made available to Landlord or a Lender, and providing Tenant 
is not in default under the Lease, Tenant may 

                                      -18-

<PAGE>

                                                                         LOT A


abate Base Annual Rent in the same proportion as the rentable square footage 
rendered unusable by such damage or destruction bears to the total rentable 
square footage of the Leased Premises; provided that Tenant shall not be 
entitled to such Base Annual Rent abatement until ten (10) business days 
following written notice by Tenant to Landlord and any Lender identified as a 
named insured under the policy or policies of insurance on the Leased 
Premises that such proceeds have not been made available to Tenant within 
such thirty (30) day period and, following such notice, such proceeds are not 
made available to Tenant within such ten (10) day period.  Base Annual Rent 
abatement shall continue until all such insurance proceeds are made available 
to Tenant.

     In the event of damage to or destruction of the Leased Premises which 
results in Tenant's loss of use of the Leased Premises, or a portion thereof, 
and the cost of repair and replacement is more than one million dollars 
($1,000,000), as shall be established by Tenant to Landlord by written notice 
accompanied by an architect's certification of cost, then if insurance 
proceeds are not made available to Tenant for repair and restoration within 
thirty (30) days from the date that any such proceeds shall have been made 
available to Landlord or a Lender, and providing Tenant is not in default 
under the Lease, Tenant may terminate this Lease; provided that Tenant shall 
not be entitled to terminate this Lease until ten (10) business days 
following written notice by Tenant to Landlord and any Lender identified as a 
named insured under the policy or policies of insurance on the Leased 
Premises that such proceeds have not been made available to Tenant within 
such thirty (30) day period and, following such notice, such proceeds are not 
made available to Tenant within such ten (10) day period.

     Unless Tenant is in default under this Lease or its not complying with 
Tenant's obligations under Article IX, Tenant shall not be obligated to 
expend any amount in excess of the amount of insurance deductibles plus 
insurance proceeds made available for such restoration.  Upon the issuance of 
all necessary governmental permits, Tenant shall commence and diligently 
prosecute to completion the restoration of the Leased Premises, to the extent 
then allowed by Laws, to substantially the same condition as that existing 
immediately prior to such damage or destruction.

     11.2. No Termination or Rent Abatement.  Damage to, or destruction of 
all or any portion of the Leased Premises by fire or by any other cause shall 
not, except as provided in Paragraph 11.1, give Tenant the right to terminate 
this Lease nor entitle Tenant to surrender the Leased Premises, nor in any 
way affect Tenant's obligation to pay the Base Annual Rent or Additional 
Rent, and, except under certain specified, limited circumstances referred to 
in Paragraph 3.3, there shall be no abatement, diminution or reduction of 
Base Annual Rent or Additional Rent payable under this Lease for any cause 
whatsoever.

                                      -19-
<PAGE>

                                                                         LOT A


                                  ARTICLE XII
                                          
                                 CONDEMNATION
                                          
     12.1. Total Condemnation.  If all or Substantially All of the Leased 
Premises are taken by Condemnation, this Lease shall terminate on the Date of 
Taking.

     12.2. Partial Condemnation.  If Less than Substantially All of the 
Leased Premises is taken by Condemnation, this Lease shall terminate as to 
the portion taken and otherwise remain in full force and effect, except that 
the amount of Base Annual Rent due hereunder, from time to time, shall be 
reduced, from and after the Date of Taking in the same proportion as the 
Award bears to the Fair Market Value of the Leased Premises (including the 
real estate subject to the Condemnation) on the Date of Taking (the 
"Paragraph 12.2 Value") as determined by the condemning authority (the 
"Condemnor") and subject to a final Award and final Paragraph 12.2 Value 
(after the exhaustion of all appeals if so desired by Landlord or Tenant).  
Landlord shall have no obligation to restore the Leased Premises, or 
otherwise compensate Tenant (except through such Base Annual Rent reduction), 
in the event of such partial Condemnation, provided that, to the extent it 
can be determined or established that a portion of the Award represents 
damages for repair and reconstruction of the remaining portion of the Leased 
Premises following such Condemnation received by Landlord for such 
Condemnation, Landlord shall promptly make available to Tenant such portion 
of the Award for use by Tenant in repairing or restoring the Leased Premises. 
 Any portion of an Award shall be deemed made available for such repair and 
restoration if it is made available through and disbursed under reasonable 
disbursement conditions and customary construction loan disbursement 
procedures. If the Condemnor does not establish the Paragraph 12.2 Value, the 
Paragraph 12.2 Value shall be determined by agreement between Landlord and 
Tenant on or before thirty (30) days before the Date of Taking using, to the 
extent possible, the same basis and assumptions as Condemnor used in the 
calculation of the Award. In the absence of such agreement as to Paragraph 
12.2 Value, it shall be determined as follows:

          (a)  Each party shall appoint an Appraiser (hereinafter defined) 
within ten (10) days after notice of failure to agree given by one party to 
the other, and shall advise the other party of such appointment.  On the 
failure of either party so to appoint an Appraiser, and to advise the other 
party of such appointment, the person who has been appointed as Appraiser may 
appoint a second Appraiser to represent the party in default.

          (b)  The two (2) Appraisers appointed in either manner shall then 
proceed to establish the Paragraph 12.2 Value using, to the extent possible, 
the same basis and assumptions as the Condemnor used in the calculation of 
the Award.  In the event of their inability to agree upon the Paragraph 12.2 
Value within thirty (30) days after their appointment, then they shall 
appoint a third Appraiser, provided however, that if the 

                                      -20-

<PAGE>

                                                                         LOT A


difference between the amounts respectively determined by the two (2) 
Appraisers is not greater than an amount equal to ten percent (10%) of the 
higher of the two (2) amounts so determined, then the Paragraph 12.2 Value 
shall be the mean of such two amounts, and it shall not be necessary to 
appoint a third (3rd) Appraiser.  In the event that a third (3rd) Appraiser 
is not appointed within fifteen (15) days after the expiration of the thirty 
(30) day period referenced to in the first sentence of this Subparagraph 
12.2(b), then, in such event, the chief executive officer of the Philadelphia 
Chapter of the American Institute of the Appraisers shall appoint the third 
Appraiser.

          (c)  In the event a third Appraiser is appointed, such Appraiser's 
determination of Paragraph 12.2 Value shall be final so long as it is within 
the limits of the appraisals established by the Appraisers appointed by the 
parties pursuant to Subparagraph 12.2(a) above.  If the third Appraiser's 
appraisal is not within such limits, the determination of Paragraph 12.2 
Value made by an Appraiser appointed pursuant to Subparagraph 12.2(a) above 
which is the closest to that of the third Appraiser shall control.

          (d)  As used in this Lease, "Appraiser" shall mean an independent 
M.A.I. appraiser who has at least ten (10) years, experience in appraising 
commercial real estate in the Philadelphia, Pennsylvania area.  Neither party 
shall be precluded from appointing an independent Appraiser whom such party 
had previously employed as an independent Appraiser; except that the third 
Appraiser, if appointed, may not have been previously employed by either 
party.

          (e)  Landlord and Tenant shall divide equally the charges of 
Appraisers selected under this Paragraph 12.2.

     12.3. Temporary Taking.  If all or Substantially All of the Leased 
Premises is temporarily taken by Condemnation for a period which either 
exceeds one (1) year or which extends beyond the expiration of the Leased 
Term, then Landlord and Tenant shall each independently have the option to 
terminate this Lease, effective on the date possession is taken by the 
Condemnor.

     12.4. Division of Condemnation Awards.  Any Awards made as a result of 
any Condemnation of the Leased Premises shall belong to and be paid to 
Landlord, and Tenant hereby assigns to Landlord all of its right, title and 
interest in any such Award; provided, however, that Tenant shall be entitled 
to receive any Award that is made expressly (i) for the taking of Trade 
Fixtures, (ii) for the interruption of Tenant's business or its moving costs, 
(iii) for any temporary taking where this Lease is not terminated as a result 
of such taking and/or (iv) as provided in Paragraph 12.2 regarding damages 
for repair and reconstruction of the remaining portion of the Leased Premises 
following such Condemnation. the rights of Landlord and Tenant regarding any 
Condemnation shall be determined as provided in this Article, and each party 
hereby waives the provisions of any Laws allowing either party to 

                                      -21-

<PAGE>

                                                                         LOT A


petition a court to terminate this Lease in the event of a partial taking of 
the Leased Premises.

     12.5. Other Condemnation Provisions.  If this Lease is not terminated 
pursuant to Article XII, Tenant shall repair any damage caused by such 
condemnation so as to restore the remaining portion of the Leased Premises as 
nearly as practicable to the condition thereof immediately prior to such 
Condemnation to the extent that Tenant receives an Award resulting from the 
Condemnation sufficient to make such repair and restoration.


                                  ARTICLE XIII

                              DEFAULT AND REMEDIES

     13.1. Events of Default.  Tenant shall be in default of its obligations 
under this Lease if any of the following events shall occur:

          (a)  Tenant shall have failed to pay Base Annual Rent or Additional 
Rent on the dates due under this Lease; provided that (i) Landlord shall give 
Tenant notice of such failure and fifteen (15) days to cure such failure and 
(ii) following such fifteen (15) day period if Tenant shall still have failed 
to pay such Base Annual Rent or Additional Rent, Landlord shall give Tenant a 
second notice of such failure and an additional fifteen (15) days to cure 
such failure before Tenant shall be in default hereunder; or

          (b)  Tenant shall have failed to perform (i) any term, covenant, or 
condition of this Lease except those requiring the payment of Base Annual 
Rent or Additional Rent or (ii) any term, covenant or condition of the 
Environmental Indemnity, and, in the case of either (i) or (ii) of this 
Subparagraph 13.1(b), Tenant shall have failed to cure such failure within 
thirty (30) days after written notice from Landlord specifying the nature of 
such breach; provided that if any such breach cannot reasonably be cured 
within such thirty (30) day period then Tenant shall have a reasonable period 
to cure such breach, so long as Tenant commences to cure the breach within 
such thirty (30) day period and thereafter diligently, in good faith and 
using reasonable efforts, pursues such cure to completion, except that Tenant 
shall not under any circumstances have more than thirty (30) days following 
such written notice to cure any monetary default under the Environmental 
Indemnity; or

          (c)  Tenant shall have made a general assignment of its assets for 
the benefit of its creditors; or

          (d)  Tenant shall have assigned its interest in this Lease in 
violation of the provisions contained in Article XIV, whether voluntarily or 
by operation of law; or

                                      -22-

<PAGE>

                                                                         LOT A


          (e)  Tenant shall have permitted the sequestration or attachment 
of, or execution on, or the appointment of a custodian or receiver with 
respect to, all or substantially all of the property of Tenant and Tenant 
shall have failed to obtain a return or release of such property within 
thirty (30) days thereafter, or prior to sale pursuant to such sequestration, 
attachment or levy, whichever is earlier; or

          (f)  A court shall have made or entered any decree or order with 
respect to Tenant or Tenant shall have submitted to or sought a decree or 
order (or a petition or pleading shall have been filed in connection 
therewith) which: (i) grants or constitutes (or seeks) an order for relief, 
appointment of a trustee, or confirmation of a reorganization plan under the 
bankruptcy laws of the United States; (ii) approves as properly filed (or 
seeks such approval of) a petition seeking liquidation or reorganization 
under said bankruptcy laws or any other debtor's relief law or statute of the 
United States or any state thereof; or (iii) otherwise directs (or seeks) the 
winding up or liquidation of Tenant; and such petition, decree or order shall 
have continued in effect for a period of thirty (30) or more days.

          (g)  So long as the Landlord under this Lease and under the Lease 
of even date herewith between Landlord and Tenant with respect to Lot B shown 
on the Subdivision Plan (the "Lot B Lease") are the same entity or person, 
Tenant under the Lot B Lease shall have defaulted under the Lot B Lease.

          (h)  So long as the Landlord under this Lease and under the Lease 
of even date herewith between Landlord and Tenant with respect to Lot C shown 
on the Subdivision Plan (the "Lot C Lease") are the same entity or person, 
Tenant under the Lot C Lease shall have defaulted under the Lot C Lease.

     13.2. Landlord's Remedies.  In the event of any default by Tenant, 
Landlord shall have the following remedies, in addition to all other rights 
and remedies provided by any Laws or otherwise provided in this Lease, or 
otherwise available to Landlord, to which Landlord may resort cumulatively, 
or in the alternative:

          (a)  Landlord may, at Landlord's option, terminate this Lease, by 
written notice of termination specifying the date of termination of this 
Lease on which date this Lease shall terminate, and take and retain 
possession of the Leased Premises by any means legally available to Landlord, 
including summary dispossess proceedings.  To the extent required by 
applicable Laws, Landlord shall attempt to relet all or any part of the 
Leased Premises in any manner, for any term, for such rent and upon terms 
reasonably satisfactory to Landlord, and if applicable Laws do not require 
Landlord to attempt to so relet, Landlord shall use commercially reasonable 
efforts, accepted in the industrial/commercial real estate industry in the 
suburban counties contiguous to Philadelphia, Pennsylvania, for real estate 
of the type and condition of the Leased Premises, to relet all or any part of 
the Leased Premises in any manner, for any term, for such rent and upon terms 
reasonably acceptable to 

                                      -23-
<PAGE>

                                                                         LOT A


Landlord.  Landlord may make any repairs, changes, additions or alterations 
in or to the Leased Premises that may be necessary for such reletting, taking 
into account the character and then current use of the Leased Premises.  If 
the Leased Premises are relet, Tenant shall be liable to Landlord for the 
Present Value (determined at the time of Landlord's demand) of the difference 
between the amount of Base Annual Rent, Additional Rent, and all other 
amounts payable hereunder and the net proceeds of any such reletting (net of 
all reasonable expenses, including without limitation, repairs or 
construction costs and leasing commissions relating to such reletting), and 
Tenant shall pay to Landlord the Present Value of such difference immediately 
upon demand by Landlord.  Any termination under this Subparagraph 13.2(a) 
shall not relieve Tenant from the payment of any sums then due Landlord or 
from any claim against Tenant for damages or Rent accrued and then accruing.  
In no event shall any act or omission by Landlord, in the absence of a 
written election by Landlord to terminate this Lease, constitute a 
termination of this Lease, including, without limitation:

               (i)  Appointment of a receiver or keeper in order to protect
Landlord's interest hereunder;

               (ii) Consent or refusal to consent to any assignment of this
Lease by Tenant, whether pursuant to the provisions hereof or otherwise; or

               (iii) Any other action by Landlord or Landlord's agents 
intended to mitigate the adverse effects of any breach of this Lease by 
Tenant, including without limitation any action taken to maintain and 
preserve the Leased Premises or any action taken to relet the Leased Premises 
or any portions thereof, for the account of Tenant and in the name of Tenant.

          (b)  Landlord may, at Landlord's option, with or without 
terminating this Lease, take and retain possession of the Leased Premises by 
any means legally available to Landlord, including summary dispossess 
proceedings.  If Landlord elects to terminate Tenant's right to possession 
only, without terminating this Lease, Landlord may, following taking 
possession of the Leased Premises in accordance herewith, remove Tenant's 
signs and other evidences of tenancy, without such entry and possession 
terminating the Lease or releasing Tenant, in whole or in part, from Tenant's 
obligations to pay Rent hereunder for the Lease Term or for any other of 
Tenant's obligations under this Lease.  To the extent required by applicable 
Laws, Landlord shall attempt to relet all or any part of the Leased Premises 
in any manner, for any term, for such rent and upon terms reasonably 
satisfactory to Landlord, and if applicable Laws do not require Landlord to 
attempt to so relet, Landlord shall use commercially reasonable efforts, 
accepted in the industrial/commercial real estate industry in the suburban 
counties contiguous to Philadelphia, Pennsylvania, for real estate of the 
type and condition of the Leased Premises, to relet all or any part of the 
Leased Premises in any manner, for any term, for such rent and upon terms 
reasonably acceptable to Landlord.  Landlord may make any repairs, changes, 
alterations or additions in or to the 

                                      -24-

<PAGE>

                                                                         LOT A


Leased Premises that may be necessary for such reletting, taking into account 
the character and then current use of the Leased Premises.  If Landlord is 
unable to relet the Leased Premises, Tenant will pay Landlord on demand all 
amounts due from Tenant to Landlord under this Lease for the remainder of the 
Lease Term.  If the Leased Premises are relet, Tenant shall be liable to 
Landlord for the Present Value (determined at the time of Landlord's demand) 
of the difference between the amount of Base Annual Rent, Additional Rent, 
and all other amounts payable hereunder and the net proceeds of any such 
reletting (net of all reasonable expenses, including without limitation, 
repairs or construction costs and leasing commissions relating to such 
reletting), and Tenant shall pay to Landlord the Present Value of such 
difference immediately upon demand by Landlord.

          (c)  Landlord may, at Landlord's election, keep this Lease in 
effect and enforce all of its rights and remedies under this Lease, including 
(i) the right to recover the Base Annual Rent and Additional Rent and other 
sums as they become due by appropriate legal action, and (ii) the right to 
invoke the remedies of injunctive relief and specific performance to compel 
Tenant to perform its obligations under this Lease.

          (d)  If Tenant is in default under this Lease and abandons or 
vacates the Leased Premises, this Lease shall not terminate unless Landlord 
gives Tenant written notice of its election to so terminate this Lease.  No 
act by or on behalf of Landlord intended to mitigate the adverse effect of 
such breach, including, without limitation, those described by Subparagraphs 
13.2(a)(i), (ii) and (iii), shall constitute a termination of Tenant's right 
to possession unless Landlord gives Tenant written notice of termination.  
Should Landlord not terminate this Lease by giving Tenant written notice, 
Landlord may enforce all its rights and remedies under this Lease, including 
the recovery of Rent as it becomes due and payable under this Lease.

          (e)  If Landlord terminates this Lease, Landlord, in addition to 
all other rights and remedies available to Landlord in the event of Tenant's 
default, but subject to the provisions of the second sentence of Subparagraph 
13.2(a), shall be entitled, at Landlord's election, to damages as provided 
under applicable Laws or as set forth in Subparagraph 13.2(e)(i) and (ii).  
For purposes of computing such damages (i) an interest rate of Prime plus six 
percent (6%) per annum, but in no event less than thirteen and one half 
percent (13.5%) per annum, shall be used where permitted, and (ii) Rent due 
under this Lease shall include Base Annual Rent, Additional Rent and all 
other amounts payable by Tenant under this Lease, prorated on a monthly basis 
where necessary to compute such damages.  Such damages shall include, without 
limitation:

               (i)  The worth of the amount by which the Rent for the balance 
of the Lease Term after the time of termination exceeds the fair rental value 
of the Leased Premises for the balance of the Lease Term as reasonably 
estimated solely by Landlord, such 

                                      -25-
<PAGE>

                                                                         LOT A


worth shall be the Present Value of the amount determined pursuant to the 
preceding clause, computed by discounting such amount at Thirty-day LIBOR at 
the time of judgment; and

               (ii) Any other amount necessary to compensate Landlord for all 
detriment caused by Tenant's failure to perform Tenant's obligations under 
this Lease or for expenses incurred by Landlord in performing Tenant's 
obligations under this Lease, or which in the ordinary course of things would 
be likely to result therefrom, including, without limitation, the following:  
(a) expenses for cleaning, repairing or restoring the Leased Premises; (b) 
expenses for repairing the Leased Premises for the purpose of reletting, 
including installation of leasehold improvements (whether such installation 
be funded by a reduction of rent, direct payment or allowance to a new 
tenant, or otherwise); (c) broker's fees, advertising costs and other 
expenses of reletting the Leased Premises; (d) costs of carrying the Leased 
Premises, such as taxes, insurance premiums, utilities and security 
precautions; (e) expenses in retaking possession of the Leased Premises; (f) 
attorneys' fees and court costs incurred by Landlord in retaking possession 
of the Leased Premises and in reletting the Leased Premises; and (g) the 
portion of any brokerage commission paid by Landlord in procuring this Lease 
attributable to the remaining balance of the Lease Term.

          (f)  Subject to Landlord's compliance with the requirements of the 
Trust Agreement, Landlord may, at Landlord's option, exercise Landlord's 
rights and remedies under the Trust Agreement.

          (g)  Landlord may exercise any other legal or equitable right or 
remedy which Landlord may have.

          (h)  Nothing in this Paragraph shall limit Landlord's rights to 
indemnification from Tenant as provided in this Lease.

     13.3. Landlord's Right to Cure.  All covenants and agreements to be kept 
or performed by Tenant under any of the terms of this Lease shall be 
performed by Tenant at Tenant's sole cost and expense and without any 
abatement of Rent (except to the extent referred to in Paragraph 3.3 of this 
Lease).  If Tenant shall fail to pay any sum of money required to be paid by 
it hereunder or shall fail to perform any other act on its part to be 
performed hereunder following any notice and cure period required under 
Subparagraph 13.1(a) or 13.1(b) (whether such payment or performance is due 
to or in favor of Landlord or any third party), Landlord may, but shall not 
be obliged to, and without waiving any default of Tenant or releasing Tenant 
from any obligations to Landlord hereunder, make any such payment or perform 
any such other act on Tenant's part to be made or performed as in this Lease 
provided (including but not limited to Tenant's obligations pursuant to 
Paragraphs 4.2, 6.1 and 6.2 hereof).  All sums so paid by Landlord and all 
necessary incidental costs, together with interest thereon at the rate of 
Prime plus six percent (6%) per annum, but in no event less than thirteen and 
one half percent (13.5%) per annum, from the date of such 

                                      -26-

<PAGE>

                                                                         LOT A


payment by Landlord, shall be paid to Landlord forthwith on demand, as 
Additional Rent, and Landlord shall have (in addition to any other right or 
remedy of Landlord) the same rights and remedies (including, but not limited 
to, Landlord's remedies under Paragraph 13.2 hereof) in the event of 
nonpayment thereof by Tenant as in the case of default by Tenant in the 
payment of Rent.

     13.4. CONFESSION OF JUDGMENT IN EJECTMENT.  AFTER AT LEAST TEN (10) 
DAYS' PRIOR WRITTEN NOTICE FROM LANDLORD OF LANDLORD'S INTENTION TO CONFESS 
JUDGMENT IN EJECTMENT, INCLUDING COPIES OF PLEADINGS TO BE FILED IN ANY SUCH 
EJECTMENT ACTION, TENANT, FULLY COMPREHENDING THE RELINQUISHMENT OF CERTAIN 
RIGHTS INCLUDING, WITHOUT LIMITATION, RIGHTS OF PREJUDGMENT NOTICE AND 
HEARING AND POST-JUDGMENT NOTICE AND HEARING BEFORE EXECUTION, AUTHORIZES AND 
EMPOWERS ANY ATTORNEY OF ANY COURT OF RECORD WITHIN THE UNITED STATES, TO 
APPEAR FOR TENANT, AND FOR ANY OTHER PERSON CLAIMING UNDER, BY OR THROUGH 
TENANT, AND CONFESS JUDGMENT IN EJECTMENT FORTHWITH AGAINST TENANT AND SUCH 
OTHER PERSON AND IN FAVOR OF LANDLORD, ITS SUCCESSORS AND ASSIGNS, FOR 
POSSESSION OF THE LEASED PREMISES, TOGETHER WITH HEREDITAMENTS AND 
APPURTENANCES AND ALL FIXTURES AND EQUIPMENT INSTALLED THEREIN, WITH RELEASE 
OF ALL ERRORS, WAIVER OF STAY OF EXECUTION, AND WAIVER OF EXEMPTION BY 
TENANT.  NO SINGLE EXERCISE OF THE FOREGOING WARRANTS AND POWERS OF ATTORNEY 
SHALL HAVE BEEN DEEMED TO EXHAUST SUCH WARRANTS AND POWERS, WHETHER OR NOT 
SUCH EXERCISE SHALL BE HELD BY ANY COURT TO BE INVALID, VOIDABLE OR VOID, BY 
THE WARRANTS AND POWERS SHALL CONTINUE UNDIMINISHED AND MAY BE EXERCISED FROM 
TIME TO TIME AS OFTEN AS LANDLORD, OR ITS SUCCESSORS AND ASSIGNS SHALL ELECT 
UPON THE OCCURRENCE OF A DEFAULT UNDER THIS LEASE.  TENANT CONFIRMS THAT THIS 
IS A COMMERCIAL LEASE, THAT TENANT WAS REPRESENTED BY COUNSEL IN TENANT'S 
NEGOTIATION AND EXECUTION OF THIS LEASE, AND THAT TENANT FREELY AND 
VOLUNTARILY EXECUTED THIS LEASE WITH THIS PARAGRAPH 13.4 AS A PART THEREOF.

     13.5. Waiver.

          (a)  No right or remedy herein conferred upon or reserved to 
Landlord is intended to be exclusive of any other right or remedy, and every 
right and remedy shall be cumulative and in addition to any other right or 
remedy given hereunder or now or hereafter existing at law or equity.  The 
failure of Landlord to insist upon the strict performance of any covenant or 
agreement or to exercise any option, right, power or remedy contained in 

                                      -27-
<PAGE>

                                                                         LOT A


this Lease shall not be construed as a waiver or relinquishment thereof for 
the future.  The receipt by Landlord of any Rent, with knowledge of the 
breach, shall not constitute a waiver or cure of such breach or prevent 
Landlord from exercising any of its rights or remedies hereunder on account 
of Tenant's breach.  Landlord shall be entitled to injunctive relief in case 
of the violation, or attempted or threatened violation, of any covenant, 
agreement, condition or provision of this Lease, or to a decree compelling 
performance of any covenant, agreement, condition or provision of this Lease, 
or to any other remedy allowed by law.  If on account of any breach or 
default by Tenant under the terms of this Lease, Landlord consults or employs 
an attorney or attorneys concerning Tenant's possible default under this 
Lease or to enforce or defend any of the Landlord's rights or remedies under 
this Lease, Tenant agrees to pay, on demand, as Rent, all reasonable 
attorneys, fees and costs so incurred.

          (b)  Tenant hereby waives any notice of termination or intention to 
reenter provided for in any statute, or of the institution of legal 
proceedings for that purpose, and in addition waives any right of redemption 
or reentry or repossession, or to restore the operation of this Lease if it 
is terminated or if Tenant is dispossessed by any judgment or by warrant of 
any court or judge in the cases of reentry or repossession by Landlord, or in 
the case of expiration of the Lease Term.  Tenant, in addition, waives any 
and all benefits of any and all laws now or hereafter in force or effect 
exempting property of Tenant from liability for rent or for debt.  Tenant 
also expressly waives:

               (i)  The benefit of all Laws, now or hereafter in force, 
exempting any goods on the Leased Premises, or elsewhere, from levy or sale 
in any legal proceedings taken by Landlord to enforce any rights under this 
Lease;

               (ii) The right to delay execution on any real estate that may 
be levied upon to collect any amount which may become due under the terms and 
conditions of this Lease and any right to have the same appraised;

               (iii) Any and all rights of redemption granted by or under any 
present or future laws in the event of Tenant being evicted or dispossessed 
for any cause, or in the event of Landlord obtaining possession of the Leased 
Premises, by reason of the violation by Tenant of any of the covenants or 
conditions of this Lease, or otherwise; and

               (iv) The right, if any, to three months notice and/or fifteen 
(15) or thirty (30) days' notice under the Landlord and Tenant Act of 1951, 
as amended.

          (c)  (i)  At the sole option of Landlord to be exercised only by 
written notice to Tenant at any time and from time to time, Landlord may 
elect to eliminate from this Lease, permanently or temporarily, Subparagraph 
13.1(g) or Subparagraph 13.1(h), or both of them.

                                      -28-

<PAGE>

                                                                         LOT A


               (ii) At the sole option of Landlord to be exercised only by 
written notice to Tenant at any time and from time to time, Landlord may 
elect to eliminate from this Lease, permanently or temporarily, Subparagraph 
13.2(f) and all other references to the Trust Agreement.

     13.6. Late Charge.  In the event any amount of Base Annual Rent or 
Additional Rent shall remain unpaid for five (5) calendar days after such 
amount becomes due, Tenant shall pay Landlord, without notice or demand, a 
late charge equal to two percent (2%) of such overdue amount to partially 
compensate Landlord for its administrative costs in connection with such 
overdue payment; which administrative costs Tenant expressly acknowledges are 
reasonable and do not constitute a penalty.

     13.7. Bankruptcy or Insolvency.

          (a)  In the event that Tenant shall become a Debtor under Chapter 7 
of the Bankruptcy Code (hereinafter defined), and the Trustee or Tenant shall 
elect to assume this Lease for the purpose of assigning the same or 
otherwise, such election and assignment may only be made if all of the terms 
and conditions of Subparagraph 13.7(b) and Subparagraph 13.7(d) are 
satisfied.  If such Trustee shall fail to elect or assume this Lease within 
sixty (60) days after the filing of the petition or such later date as shall 
be approved by the Bankruptcy Court, not to exceed ninety (90) days, this 
Lease shall be deemed to have been rejected.  Landlord shall be thereupon 
immediately entitled to possession of the Leased Premises without further 
obligation to Tenant or Trustee, and this Lease shall be cancelled, but 
Landlord's right to be compensated for damages in such liquidation proceeding 
shall survive.

          (b)  In the event that a petition for reorganization or adjudgment 
of debts is filed concerning Tenant under Chapters 11 or 13 of the Bankruptcy 
Code, or a proceeding is filed under Chapter 7 of the Bankruptcy Code and is 
transferred to Chapters 11 or 13, the Trustee or Tenant, as 
Debtor-In-Possession, must elect to assume this Lease within sixty (60) days 
from the date of the filing of the petition under Chapters 11 or 13 or such 
later date as shall be approved by the Bankruptcy Court, not to exceed ninety 
(90) days, or the Trustee or Debtor-In-Possession shall be deemed to have 
rejected this Lease.  No election by the Trustee or Debtor-In-Possession to 
assume this Lease whether under Chapter 7, 11, or 13, shall be effective 
unless each of the following conditions, which Landlord and Tenant 
acknowledge are commercially reasonable in the context of a bankruptcy 
proceeding of Tenant, have been satisfied, and Landlord has so acknowledged 
in writing:

               (i)  The Trustee or the Debtor-In-Possession has cured, or has 
provided Landlord adequate assurance (as defined in Subparagraph 13.7(b)(v) 
below) that:

                    (A)  Within ten (10) days from the date of such 
assumption the Trustee or Debtor in Possession will cure all monetary 
defaults under this Lease; and

                                      -29-
<PAGE>

                                                                         LOT A


                    (B)  Within thirty (30) days from the date of such 
assumption the Trustee or Debtor in Possession will cure all non-monetary 
defaults under this Lease.

               (ii) The Trustee or the Debtor-In-Possession has compensated, 
or has provided to Landlord adequate assurance (as defined below) that, 
within ten (10) days from the date of assumption, Landlord will be 
compensated for any pecuniary loss incurred by Landlord arising from the 
default of Tenant, the Trustee, or the Debtor-In-Possession as recited in 
Landlord's written statement of pecuniary loss sent to the Trustee or 
Debtor-In-Possession.

               (iii) The Trustee or the Debtor-In-Possession has provided 
Landlord with adequate assurance of the future performance of each of 
Tenant's, Trustee's or Debtor-In-Possession obligations under this Lease; 
provided, however, that:

                    (A)  If not otherwise deposited with Landlord, the 
Trustee or Debtor-In-Possession shall also deposit with Landlord, as security 
for the timely payment of Rent, an amount at least equal to a quarterly 
installment of Base Annual Rent (as well as the payments described in 
Subparagraph 13.7(b)(iii)(C) below) and other monetary charges accruing under 
this Lease;

                    (B)  If not otherwise required by the terms of this 
Lease, the Trustee or Debtor-In-Possession shall also pay in advance on the 
date Base Annual Rent is payable one quarter (1/4) of Tenant's annual 
obligations under this Lease for Real Property Taxes, insurance and similar 
charges;

                    (C)  From and after the date of the assumption of this 
Lease, the Trustee or Debtor-In-Possession shall pay all Base Annual Rent, 
Additional Rent, and other amounts payable by Tenant as they become due under 
this Lease; and

                    (D)  The obligations imposed upon the Trustee or 
Debtor-In-Possession shall continue with respect to Tenant or any assignee of 
this Lease after the completion of bankruptcy proceedings.

               (iv) The assumption of the Lease will not breach any provision 
in any other lease, mortgage, financing agreement or other agreement by which 
Landlord is bound relating to the Leased Premises.

               (v)  For purposes of this Subparagraph 13.7(b), Landlord and 
Tenant acknowledge that, in the context of a bankruptcy proceeding of Tenant, 
at a minimum adequate assurance, shall mean:

                                      -30-

<PAGE>

                                                                         LOT A


                         (1)  The Trustee or the Debtor-In-Possession has and 
will continue to have sufficient unencumbered assets after the payment of all 
secured obligations and administrative expenses to assure Landlord that the 
Trustee or Debtor-In-Possession will have sufficient funds to fulfill the 
obligations of Tenant under this Lease, and to keep the Leased Premises 
properly staffed with sufficient employees to conduct a fully-operational, 
active business on the Leased Premises; and

                         (2)  If defaults referred to in Paragraph 
13.7(b)(i)(a)(B) above are not cured within the time periods set forth 
therein, the Bankruptcy Court shall have entered an order segregating 
sufficient cash payable to Landlord or the Trustee or Debtor-In-Possession 
shall have granted a valid and perfected first lien and security interest or 
mortgage in property of Tenant, Trustee or Debtor-In-Possession, or a 
combination of such cash, perfected first liens, security interests or 
mortgages, acceptable as to value and kind to Landlord, to secure to Landlord 
the obligation of the Trustee or Debtor-In-Possession to cure the monetary 
and/or non-monetary defaults under this Lease.

          (c)  In the event that this Lease is assumed by a Trustee appointed 
for Tenant or by Tenant as Debtor-In-Possession under the provisions of 
Subparagraph 13.7(b) hereof and thereafter Tenant is liquidated or files a 
subsequent Petition for reorganization or adjustment of debts under Chapters 
11 or 13 of the Bankruptcy Code, then, and in either of such events, Landlord 
may, at its option, terminate this Lease and all rights of Tenant hereunder, 
by giving Tenant written notice of its election to so terminate, by no later 
than thirty (30) days after the occurrence of either of such events.

          (d)  If the Trustee or Debtor-In-Possession has assumed this Lease 
pursuant to the terms and provisions of Subparagraph 13.7(a) or (b) herein, 
for the purpose of assigning (or elects to assign) Tenant's interest under 
this Lease or the estate created thereby, to any other person, such interest 
or estate may be so assigned only if Landlord shall acknowledge in writing 
that the intended assignee has provided adequate assurance of all of the 
terms, covenants and conditions of this Lease to be performed by Tenant.  For 
purposes of this Subparagraph 13.7(d), Landlord and Tenant acknowledge that, 
in the context of a bankruptcy proceeding of Tenant, at a minimum adequate 
assurance of future performance' shall mean that each of the following 
conditions have been satisfied, and Landlord has not acknowledged in writing:

               (i)  The assignee has submitted a current financial statement 
audited by an independent certified public accountant which shows a net worth 
and working capital in amounts determined to be sufficient by Landlord to 
assure the future performance by such assignee of Tenant's obligations under 
this Lease;

                                      -31-

<PAGE>

                                                                         LOT A


               (ii) The assignee, if requested by Landlord, shall have 
obtained guarantees in form and substance reasonably satisfactory to Landlord 
from one or more persons who satisfy Landlord's standards of 
creditworthiness; and

               (iii) Landlord has obtain all consents or waivers from any 
third party required under any lease, mortgage, financial arrangement or 
other agreement by which Landlord is bound to permit Landlord to consent to 
such assignment.

          (e)  When, pursuant to the Bankruptcy Code, the Trustee or 
Debtor-In-Possession shall be obligated to pay reasonable use and occupancy 
charges for the use of the Leased Premises or any portion thereof, such 
charges shall not be less than the Base Annual Rent, Additional Rent and 
other amounts payable by Tenant under this Lease.

          (f)  Neither Tenant's interest in this Lease, nor any lesser 
interest of Tenant herein, nor any estate of Tenant hereby created, shall 
pass to any trustee, receiver, assignee for the benefit of creditors, or any 
other person or entity, or otherwise by operation of law under the laws of 
any state having jurisdiction of the person or property of Tenant unless 
Landlord shall consent to such transfer in writing.  No acceptance by 
Landlord of rent or any other payments from any such trustee, receiver, 
assignee, person or other entity shall be deemed to have waived, nor shall it 
waive the need to obtain Landlord's consent of Landlord's right to terminate 
this Lease for any transfer of Tenant's interest under this Lease without 
such consent.

          (g)  As used in this Article XIII, 'Bankruptcy Code" shall mean the 
Bankruptcy Code of the United States of America, as amended from time to 
time. Capitalized terms used in this Article XIII and not defined elsewhere 
in this Lease shall have the meanings given to such terms in the Bankruptcy 
Code.  If the Bankruptcy Code imposes shorter periods of time on actions or 
decisions by Tenant, Trustees or Debtors-In-Possession than are imposed by 
this Article XIII or imposes more stringent requirements on Tenant, Trustees, 
or Debtors-In-Possession than are imposed by this Article XIII, such shorter 
periods of time and more stringent requirements shall be applicable under 
this Article XIII.  Nothing in this Subparagraph 13.7 shall limit Landlord's 
rights and remedies otherwise set forth in this Lease.


                                  ARTICLE XIV

                           ASSIGNMENT AND SUBLETTING

     14.1. Assignment and Subletting By Tenant.  The following provisions 
shall apply to any assignment or subletting by Tenant:

                                      -32-

<PAGE>

                                                                         LOT A


          (a)  Tenant shall not assign or encumber its interest in this 
Lease, whether voluntarily or by operation of law without Landlord's prior 
written consent.  Any attempted assignment or encumbrance without Landlord's 
prior written consent shall be voidable and, at Landlord's election, shall 
constitute a default by Tenant hereunder.  Tenant shall have the right to 
sublease the Leased Premises, or any portion thereof, without Landlord's 
consent and shall provide Landlord notice of the identity of a sublessee 
following any such subletting.

          (b)  Tenant agrees to reimburse Landlord for all reasonable costs 
and attorneys' fees incurred by Landlord in conjunction with the processing 
and documentation of any assignment, transfer, change of ownership or 
hypothecation of the Leased Premises or Tenant's interest in this Lease.  No 
assignment, subletting, transfer, change of ownership or hypothecation shall 
be effective until (i) Tenant shall have paid such costs and fees (except as 
to subletting); (ii) each such assignee or transferee (excluding a subtenant) 
shall have agreed in writing for the benefit of Landlord to assume, to be 
bound by, and to perform the obligations of this Lease to be performed by 
Tenant, and (iii) an executed copy of such sublease, assignment, encumbrance, 
or other agreement of transfer shall have been delivered to Landlord.

          (c)  Consent by Landlord to one or more assignments or encumbrances 
of this Lease shall not be deemed to be a consent to any subsequent 
assignment or encumbrance.

          (d)  No subletting or assignment, even with the consent of 
Landlord, shall relieve Tenant of its personal and primary obligation to pay 
Rent and to perform all of the other obligations to be performed by Tenant 
hereunder.  The acceptance of Rent by Landlord from any person shall not be 
deemed to be a waiver by Landlord of any provision of this Lease or to be a 
consent to any assignment.

          (e)  Subject to Subparagraph 14.1(a) above, if Tenant is a 
corporation, any dissolution or sale of all or substantially all of its 
assets, merger, consolidation or other reorganization of Tenant, shall be 
deemed a voluntary assignment of Tenant's interest in this Lease.  If Tenant 
is a partnership, a withdrawal or change, voluntary, involuntary or by 
operation of law, of any general partner, or the dissolution of the 
partnership, shall be deemed a voluntary assignment.  Notwithstanding the 
foregoing provisions of this Subparagraph 14.1(e) to the contrary and subject 
to Tenant's compliance with the other provisions of this Article XIV, and to 
the condition that Tenant is not in default under this Lease at the time of 
such events, without it being deemed an assignment or encumbrance hereunder 
requiring Landlord's consent, (i) Tenant shall be permitted to effect a 
corporate merger, consolidation or reorganization, provided, however, that 
Unisys Corporation remains the Tenant under this Lease or (ii) if Unisys 
Corporation would not continue to be the Tenant by operation of law, any such 
merger, consolidation or reorganization is effected in accordance with 
applicable statutory provisions for merger, consolidation or reorganization 
of 

                                      -33-

<PAGE>

                                                                         LOT A


corporations, which provide that the liabilities of the corporation 
participating in such merger or consolidation are assumed by the corporation 
surviving such merger or consolidation.

     14.2. Assignment By Landlord.  Landlord and its successors in interest 
shall have the right to transfer their interest in the Leased Premises and 
this Lease at any time and to any person or entity.  In the event of any 
conveyance of the Leased Premises and assignment by Landlord of this Lease to 
another, the Landlord originally named herein (and in the case of any 
subsequent transfer, the transferor), from the date of such transfer, (i) 
shall be automatically relieved, without any further act by any person or 
entity, of all liability for the performance of the obligations of the 
Landlord hereunder which may accrue after the date of such transfer, and (ii) 
shall be relieved of all liability for the performance of the obligations of 
the Landlord hereunder which have accrued before the date of transfer if its 
transferee agrees to assume and perform all such obligations of the Landlord 
hereunder and such transferee is not substantially less solvent than 
Landlord.  In the event the Landlord's interest in the Leased Premises is 
transferred to multiple transferees, such transferees shall designate, by a 
written notice to Tenant delivered upon such transfer, the name and address 
of a single person to whom all Rent and notices to be paid or given by Tenant 
hereunder shall be addressed and who shall be the sole authorized party to 
give notices to Tenant hereunder; Tenant's payment of Rent to such designated 
person shall satisfy Tenant's obligation to pay Rent to Landlord; Tenant's 
delivery of notices to such designated person shall constitute notice to 
Landlord and Tenant may rely upon notices from such designated person as 
being notice from Landlord.  After the date of such transfer, the term 
Landlord as used herein shall mean the transferee of such interest in the 
Leased Premises.


                                  ARTICLE XV
                                          
                                  TERMINATION
                                          
     15.1. Surrender of the Leased Premises.

          (a)  Immediately prior to the expiration of the Lease Term, or upon 
the earlier termination of this Lease, Tenant shall remove all Trade Fixtures 
(except surveillance cameras exterior to the buildings which shall remain 
with the Leased Premises) and repair any damage caused by such removal and 
vacate and surrender the Leased Premises to Landlord in the condition 
required by the terms of this Lease.  Without limiting the generality of the 
foregoing, Tenant shall surrender the Leased Premises (normal wear and tear 
excepted), in broom clean condition, with all interior walls cleaned, all 
trash, waste, and debris removed, all carpets cleaned, all HVAC equipment 
within the Leased Premises in operating order and in good repair, and all 
floors cleaned, all to the reasonable satisfaction of Landlord.  In the event 
there has been an event of damage or destruction governed by Article XI, or 
Condemnation affecting the Leased Premises, and Tenant has been complying 
with its 

                                      -34-

<PAGE>

                                                                         LOT A


obligations to repair and restore pursuant to Articles XI and XII thereof and 
is not otherwise in default under this Lease, Tenant may surrender the Leased 
Premises to Landlord without completion of such repair or restoration, and 
shall have no further obligations with respect thereto provided that Tenant, 
upon the termination of the Lease Term, relinquishes any rights to and 
assigns to Landlord all of Tenant's interest, if any, in insurance proceeds 
and pays to Landlord the amount of any insurance deductible to the extent 
such deductible amount has not already been expended on such repair or 
restoration, or any portion of an Award to which it is otherwise entitled 
under Article XII to the extent that it has not already been expended on such 
repairs or restoration.  If Landlord so requests, Tenant shall, at its sole 
cost and prior to the expiration or earlier termination of this Lease, remove 
any Leasehold Improvements not constructed or installed in compliance with 
Paragraph 5.1 or Paragraph 6.2 and repair all damage caused by such removal.  
If the Leased Premises are not so surrendered at the termination of this 
Lease, Tenant shall be liable to Landlord for all costs incurred by Landlord 
in returning the Leased Premises to the required condition, plus interest, 
from the date of demand for payment of such costs to the date paid, on all 
costs incurred at the rate of Prime plus six percent (6%) per annum, but in 
no event less than thirteen and one half percent (13.5%) per annum.  Tenant 
shall indemnify Landlord against loss or liability resulting from delay by 
Tenant in so surrendering the Leased Premises, including, without limitation, 
any claims made by any succeeding tenant or losses to Landlord due to lost 
opportunities to lease to succeeding tenants.

          (b)  Upon expiration or earlier termination of the Lease Term, 
Tenant shall (i) remove so much or all of the raised flooring and cabling, 
except that portion installed over depressed slab, and so much or all of the 
UPS system and Halon systems, as may be requested by Landlord; (ii) deliver 
to Landlord the following documents or records - all computer CAD plans, 
building plans and specifications and repair and maintenance files; and (iii) 
have roof repatched and warranted by a professional roofer acceptable to 
Landlord in all areas where the roof is violated or otherwise affected by the 
removal of Tenant's property from any roof.  Tenant shall clean such area 
after removal.  All such removal and cleaning shall be at Tenant's sole cost 
and expense.

     15.2. Holding Over.  Unless earlier terminated in accordance with this 
Lease or duly extended in accordance with this Lease, this Lease shall 
terminate without further notice at the expiration of the Lease Term.  Any 
holding over by Tenant after termination of this Lease shall not constitute a 
renewal or extension of the Lease or give Tenant any rights in or to the 
Leased Premises. Any holding over after such expiration with the consent of 
Landlord shall be construed to be a tenancy from month to month on the same 
terms and conditions herein specified insofar as applicable except that the 
monthly rent shall equal one twelfth (1/12) of the higher of one hundred 
fifty percent (150%) of the Base Annual Rent in effect during the last month 
prior to such termination or the then current Fair Market Rent.  The current 
Fair Market Rent shall be determined by agreement between Landlord and Tenant 

                                      -35-

<PAGE>

                                                                         LOT A


within thirty (30) days following the expiration of the Lease Term.  In the 
absence of such agreement as to the Fair Market Rent, it shall be determined 
as follows:

          (a)  Each party shall appoint an Appraiser within fifteen (15) days 
after notice of failure to agree given by one party to the other, and shall 
advise the other party of such appointment.  On the failure of either party 
so to appoint an Appraiser, and to advise the other party of such 
appointment, the person who has been appointed as Appraiser may appoint a 
second Appraiser to represent the party in default.

          (b)  The two (2) Appraisers appointed in either manner shall then 
proceed to establish the Base Annual Rent for each month of the hold over 
period.  In the event of their inability to agree upon the Base Annual Rent 
for each month of the hold over period within thirty (30) days after their 
appointment, then Landlord shall appoint a third Appraiser, provided however, 
that if the difference between the amounts respectively determined by the two 
(2) Appraisers is not greater than an amount equal to ten percent (10%) of 
the higher of the two (2) amounts so determined, then the Base Annual Rent 
for each month of the hold over period in question shall be the mean of such 
two amounts, and it shall not be necessary to appoint a third (3rd 
Appraiser).  In the event that Landlord fails to appoint a third (3rd) 
Appraiser within fifteen (15) days, then, in such event, the two Appraisers 
appointed by the parties pursuant to 15.2(a) above shall, by agreement, 
appoint the third Appraiser.

          (c)  In the event a third Appraiser is appointed, such Appraiser's 
determination of Base Annual Rent for each month of the hold over period 
shall be final so long as it is within the limits of the appraisals 
established by the Appraisers appointed by the parties pursuant to 15.2(a) 
above.  If the third Appraiser's appraisal is not within such limits, the 
determination of Base Annual Rent made by an Appraiser appointed pursuant to 
15.2(a) above which is the closest to that of the third Appraiser shall 
control.

          (d)  Landlord and Tenant shall divide equally the charges imposed 
by Appraisers selected under this Paragraph 15.2.


                                  ARTICLE XVI

                             INTENTIONALLY OMITTED




                                      -36-
<PAGE>
                                                                          LOT A


                                    ARTICLE XVII

                                 GENERAL PROVISIONS

     17.1.  Financial Information.  Tenant shall furnish to Landlord:

          (a)  As soon as available and in any event within forty-five (45) days
after the end of each quarterly accounting period in each fiscal year of Tenant,
copies of a consolidated balance sheet of Tenant and its consolidated
subsidiaries as of the last day of such quarterly accounting period, and copies
of the related consolidated statements of income and of changes in shareholders'
equity and in financial position of Tenant and its consolidated subsidiaries for
such quarterly accounting period and for the elapsed portion of the current
fiscal year ended with the last day of such quarterly fiscal year ended with the
last day of such quarterly accounting period, all in reasonable detail and with
appropriate notes, if any, and stating in comparative form the figures for the
corresponding dates and periods in the previous fiscal year, all prepared in
accordance with the generally accepted accounting practice consistently applied,
certified as complete and correct in all material respects by the chief
financial officer of Tenant (subject to year-end audit adjustments), and
otherwise in form satisfactory to Landlord;

          (b)  As soon as available and in any event within ninety (90) days
after the end of each fiscal year of Tenant, copies of a consolidated balance
sheet of Tenant and its consolidated subsidiaries as of the end of such fiscal
year, and copies of the related consolidated statements of income and of changes
in shareholders' equity and in financial position of Tenant and its consolidated
subsidiaries for such fiscal year, all in reasonable detail and with appropriate
notes, if any, and all prepared in accordance with generally accepted accounting
practice consistently applied and stating in comparative form the corresponding
figures as of the end of and for the previous fiscal year, and accompanied by an
opinion or report thereon, in scope and substance satisfactory to Landlord, by
Ernst Young & Company or such other firm of independent certified public
accountants of recognized standing in the financial community as may be selected
by Tenant and reasonably acceptable to Landlord and otherwise in a form
satisfactory to Landlord;

          (c)  Notwithstanding the requirements set forth in Paragraphs 17.1(a),
17.1(b) and 17.1(d), Tenant need not comply with such requirements if the stock
of Tenant is traded on the New York Stock Exchange, or Tenant shall be required
to file periodic reports with the Securities and Exchange Commission under the
Securities Exchange Act of 1934, as amended, but Tenant shall be required to
deliver to Landlord all financial information and reports as are sent to
Tenant's shareholders at the same time as such information or reports are sent
to Tenant's shareholders.


                                         -37-
<PAGE>
                                                                          LOT A


          (d)  Concurrently with each of the financial statements furnished
pursuant to-Subparagraphs 17.1(a) or 17.1(b) above, a certificate signed by the
chief financial officer of Tenant, to the effect that in the opinion of such
officer, based upon a review made under his or her supervision, Tenant has
performed and observed all of, and is not in default in the performance or
observance of any of, its obligations under this Lease (or, if such be not the
case, specifying all such defaults and failures, and the nature thereof, of
which such officer may have knowledge and the action proposed to be taken in
respect thereof);

          (e)  Copies of all regular and periodic reports or other reports which
Tenant shall make or be required to file with (i) the Securities and Exchange
Commission or (ii) any other federal or state regulatory agency or with any
municipal or other local body which relate to the Leased Premises.

     17.2.  Landlord's Right to Enter.  Tenant shall permit Landlord and its
agents to enter the Leased Premises at all reasonable times, upon not less than
one (1) business day's notice, for the purpose of (i) inspecting the same; (ii)
posting notices of nonresponsibility; (iii) exhibiting the Leased Premises to
prospective purchasers and/or lenders; (iv) exhibiting the Leased Premises to
prospective tenants within twenty-four (24) months prior to the expiration of
the Lease Term; (v) determining whether Tenant is performing all its obligations
hereunder; (vi) discharging Tenant's obligation (including the obligations to
repair and maintain the Leased Premises) when Tenant has failed to do so after
written notice from Landlord and the expiration of applicable cure periods;
and/or (vii) within twenty-four (24) months of the expiration of the Lease Term,
placing upon the Leased premises ordinary "for leases signs at places where
Tenant shall reasonably select.  Tenant may elect to escort Landlord at all such
times, and Landlord agrees to comply with Tenant's security requirements with
respect to the Leased Premises.  Landlord shall not use, copy or publish any of
Tenant's confidential or proprietary information obtained by Landlord in any
such entry upon the Leased Premises, and Landlord shall maintain all such
information in confidence.

     17.3.  Subordination.

          (a)  Subject to Subparagraph 17.3(b), this Lease is subject and 
subordinate, in lien and operation, to any underlying leases, mortgages, 
other title exceptions or objections, which affect the Leased Premises and 
are of public record as of the Commencement Date, and to all renewals, 
modifications, consolidations, supplements, replacements and extensions 
thereof, and all advances made or to be made thereunder for the full amount 
of such advances and without regard for the time or character of such 
advances.  This Lease is also subject and subordinate to any and all future 
mortgages affecting the Leased Premises which may hereafter be executed and 
placed of public record by Landlord after the Commencement Date, or any 
renewals, modifications, consolidations, supplements, replacements or 
extensions thereof, for the full amount of all advances made or to be made 

                                         -38-
<PAGE>
                                                                          LOT A


thereunder and without regard to the time or character of such advances. 
Without limitation on the foregoing provisions of this Section 17.3(a), this 
Lease is subject and subordinate to that certain Mortgage dated June 30, 1992 
from Landlord to Blue Bell Funding, Inc. as mortgagee, now held by United 
States Trust Company of New York, as trustee, mortgagee, and this Lease has 
been assigned as collateral security by landlord to United States Trust 
Company of New York as Trustee, mortgagee under such Mortgage.  Tenant 
agrees, within ten (10) days after Landlord's written request therefor, to 
execute, acknowledge and deliver to Landlord any and all documents or 
instruments requested by Landlord or any Lender as may be reasonably 
necessary or proper to assure the subordination of this Lease to any such 
mortgage provided that such documents and instruments shall not impose upon 
Tenant obligations other than those set forth in this Lease.  However, if the 
lessor under any such lease or any Lender holding any such mortgage, shall 
advise Landlord that it desires or requires this Lease to be prior and 
superior thereto, then, upon written request of Landlord to Tenant, Tenant 
shall promptly execute, acknowledge and deliver any and all documents or 
instruments which Landlord or such lessor or Lender deems necessary or 
desirable to make this Lease prior thereto in lien and operation.

          (b)  Any automatic subordination of this Lease to any mortgage held by
a Lender as provided in Subparagraph 17.3(a), shall be subject to and
conditioned upon Landlord's obtaining from each Lender and delivering a copy
thereof to Tenant an agreement (the "Nondisturbance and Subordination
Agreement") providing that, even though this Lease is subordinate as set forth
in Subparagraph 17.3(a), so long as Tenant is not in default under the terms of
this Lease, insurance proceeds will be disbursed in accordance with Paragraph
11.1 hereof, notwithstanding anything in any such mortgage to the contrary, any
action or proceeding to foreclose a mortgage held by such Lender will not result
in the cancellation or termination of this Lease, and that in the event of the
sale of the Leased Premises as the result of any action or proceeding to
foreclosure any such mortgage, this Lease shall continue in full force and
effect as a direct lease between Tenant and the then owner of the Leased
Premises upon all of the terms, covenants and conditions in this Lease.  So long
as the Nondisturbance and Subordination Agreement contains the Tenant
protections provided in the immediately preceding sentence, the Nondisturbance
and Subordination Agreement shall be in form and content reasonably acceptable
to the applicable Lender and may contain, among other provisions, the following
terms and conditions:  Tenant's confirmation of the subordination of the Lease
to the mortgage held by the Lender; the agreement by Tenant that neither the
Lender nor any purchaser at any foreclosure sale shall be liable for any act or
omission of Landlord under the Lease, or subject to any offsets or defenses
which Tenant may have at any time against Landlord; providing that Lender shall
not be bound by any Rent which Tenant may have paid to Landlord for more than
the current quarterly rental payment period; providing that Lender shall not be
bound by any amendment or modification of the Lease made without Lender's
consent, and; providing that Tenant agrees that any Lender, or any other entity
or person which becomes the purchaser at foreclosure sale shall be liable only
for the performance of the obligations of the Landlord under the Lease which 

                                         -39-
<PAGE>
                                                                          LOT A

arise and accrue during the period of such Lender's, entities' or person's
ownership of the Leased Premises.

     17.4.  Tenant's Attornment.  Tenant shall attorn (i) to any purchaser of
the Leased Premises at any foreclosure sale or private sale conducted pursuant
to any security instrument encumbering the Leased Premises, (ii) to any grantee
or transferee designated in any deed given in lieu of foreclosure, or (iii) to
the lessor under any underlying ground lease in effect on the date hereof should
such ground lease be terminated.

     17.5.  Estoppel Certificates.  At all times during the Lease Term,
Tenant agrees, following any request by Landlord, to promptly execute and
deliver to Landlord an estoppel certificate (i) certifying that this Lease is
unmodified and in full force and effect, or, if modified, stating the nature of
such modification and certifying that this Lease, as so modified, is in full
force and effect, (ii) stating the date to which the Rent is paid in advance, if
any, (iii) acknowledging that there are not, to Tenant's knowledge, any uncured
defaults on the part of Landlord hereunder, or if there are uncured defaults on
the part of Landlord, stating the nature of such uncured defaults, and (iv)
certifying such other information about the Lease as may be reasonably required
by Landlord.  Tenant's failure to deliver an estoppel certificate (or other
response to Landlord's request therefor, if such certificate cannot practicably
be given) within ten (10) business days after delivery of Landlord's request
therefor (unless such request was not actually received by Tenant) shall be a
conclusive admission by Tenant that, as of the date of the request for such
statement, (i) this Lease is unmodified except as may be represented by Landlord
in said request and is in full force and effect, (ii) there are no uncured
defaults in Landlord's performance, and (iii) no Rent has been paid in advance.

     17.6.  Intentionally Omitted.

     17.7.  Determination of Fair Market Rent for Extension Periods.  The
base Annual Rent for the first year of either the First Extension Period or the
Second Extension Period shall be ninety percent (90%) of the annual Fair Market
Rent for the Leased Premises for the first year of the applicable Extension
Period, but not less than the amounts set forth on Exhibit C for the first year
of the applicable Extension Period.  If Landlord and Tenant cannot agree on such
Fair Market Rent, the Fair Market Rent shall be determined in accordance with
the following procedure:

          (a)  Each party shall appoint an Appraiser within fifteen (15) days
after notice of failure to agree given by one party to the other. and shall
advise the other party of such appointment.  On the failure of either party so
to appoint an Appraiser, and to advise the other party of such appointment, the
person who has been appointed as Appraiser may appoint a second Appraiser to
represent the party in default.


                                         -40-
<PAGE>
                                                                          LOT A

          (b)  The two (2) Appraisers appointed in either manner shall then
proceed to establish the Base Annual Rent for the Extension Period in question
based on the Fair Market Rent of the Leased Premises.  In the event of their
inability to agree upon the Base Annual Rent for the Extension Period in
question within thirty (30) days after their appointment, then Landlord shall
appoint a third Appraiser, provided however, that if the difference between the
amounts respectively determined by the two (2) Appraisers is not greater than an
amount equal to ten percent (10%) of the higher of the two (2) amounts so
determined, then the Base Annual Rent for the Extension Period in question shall
be the mean of such two amounts, and it shall not be necessary to appoint a
third (3rd) Appraiser.  In the event that Landlord fails to appoint a third
(3rd) Appraiser within fifteen (15) days, then, in such event, the two
Appraisers appointed by the parties pursuant to Subparagraph 17.1(a) above
shall, by agreement, appoint the third Appraiser.

          (c)  In the event a third Appraiser is appointed, such Appraiser's
determination of Base Annual Rent for the Extension Period in question shall be
final so long as it is within the limits of the appraisals established by the
Appraisers appointed by the parties pursuant to Subparagraph 17.7(a) above.  If
the third Appraiser's appraisal is not within such limits, the determination of
Base Annual Rent made by an Appraiser appointed pursuant to Subparagraph 17.7(a)
above which is the closest to that of the third Appraiser shall control.

          (d)  Landlord and Tenant shall divide equally the charges imposed by
Appraisers selected under this Paragraph 17.7.

     17.8.  Notices.  All notices, approvals, consents, requests, and other
communications required or permitted to be given under this Lease shall be in
writing and shall be deemed given when delivered personally, or when delivered
by any nationally recognized next day delivery or courier service addressed to
the party for which the item is intended as follows:

     To Tenant:               Unisys Corporation 
                              Township Line and Union Meeting Roads
                              Blue Bell, PA  19424-0001
                              Attn:  Real Estate Department

     With a copy to:          Unisys Corporation
                              Township Line and Union Meeting Roads
                              Blue Bell, PA   19424-0001
                              Attn:  Office of the General Counsel


                                         -41-
<PAGE>
                                                                          LOT A

     To Landlord:             Blue Bell Investment Company, L.P. 
                              c/o The Shidler Group
                              One Logan Square, Suite 1105
                              Philadelphia, PA  19103

     With a copy to:          F. Michael Wysocki, Esquire
                              Saul, Ewing, Remick & Saul
                              3800 Centre Square West
                              Philadelphia, PA  19102

     Landlord and Tenant shall each have the right from time to time, to specify
as their proper addresses for purposes of notice under this Lease any other
address upon the giving of due notice hereunder.

     17.9.  Corporate Authority.  Tenant represents and warrants that each
individual executing this Lease on behalf of Tenant is duly authorized to
execute and deliver this Lease on behalf of Tenant is duly authorized to execute
and deliver this Lease on behalf of such corporation in accordance with its
charter and by-laws and that this Lease is binding upon Tenant in accordance
with its terms.  Tenant shall, within thirty (30) days after execution of this
Lease, deliver to Landlord a certified copy of the resolution of its board of
directors authorizing or ratifying the execution of this Lease, or of the
general corporate authorization, which evidences the authority for the execution
of this Lease.

     17.10.  Brokerage Commissions.  Tenant and Landlord each warrants to the
other that it has not had any dealings with any real estate brokers or salesmen
or incurred any obligations for the payment of real estate brokerage commissions
or finder's fees which would be earned or due and payable by reason of the
execution of this Lease, and each agrees to indemnify the other for its breach
of its warranty under this Paragraph 17.10.

     17.11.  Entire Lease.  This Lease, the Exhibits attached to this Lease
(which by this reference are incorporated herein), the Environmental Indemnity
and the Trust Agreement are the entire agreement between the parties respecting
the subject matter covered by such documents.  Tenant acknowledges that neither
Landlord nor Landlord's agent(s) has made any representation or warranty as to
(i) whether the Leased Premises may be used for Tenant's intended use under
existing Law or (ii) the suitability of the Leased Premises for the conduct of
Tenant's business or the condition of any Improvements.  Tenant expressly waives
all claims for damage by reason of any statement, representation, warranty,
promise or other agreement of Landlord or Landlord's agent(s), if any, not
contained in this Lease or in any amendment hereto.  No amendment to this Lease
shall be binding unless in writing and signed by the parties hereto.  Landlord
and Tenant acknowledge that the First Lease is terminated as of the date of this
Lease, except for any obligations of Tenant which by the terms of the First
Lease survive the termination of the First Lease.


                                         -42-
<PAGE>
                                                                          LOT A

     17.12.  Limited Liability of Landlord.  The liability of Landlord with
respect to this Lease shall be limited to and enforceable only out of Landlord's
assets.  No partners of Landlord shall have any liability hereunder.

     17.13.  Governing Law.  This Lease shall be governed by the laws of the
Commonwealth of Pennsylvania.

     17.14.  Quiet Enjoyment.  Tenant, upon paying all Base Annual Rent, all
Additional Rent, and all other amounts provided for in this Lease and not being
in default under this Lease, shall peaceably and quietly have and enjoy the
Leased Premises throughout the Lease Term without hindrance by Landlord or by
anyone claiming by, through or under Landlord, subject, however, to the
provisions, exceptions, reservations, and conditions of this Lease.

     17.15.  Successors and Assigns.  Subject to the provisions of this
Agreement, this Lease shall be binding upon, and inure to the benefit of the
permitted successors and assigns of Landlord and Tenant.

     17.16.  Tenant's Obligations to Lenders.  Any obligation of Tenant to
comply with any requirement of a Lender is subject to Landlord's prior
notification to Tenant of such Lender's identity and address.

     

          IN WITNESS WHEREOF, Landlord and Tenant have executed this Lease with
the intent to be legally bound thereby, as of the date first above written.

                              BLUE BELL INVESTMENT COMPANY, L.P. 
                              by its sole General Partner, 
                              Strategic Facility Investors, Inc.


Attest:__________________  By:_________________________________
                                   Clay W. Hamlin, III
                                   President


                              UNISYS CORPORATION, 
                              a Delaware corporation


Attest:__________________  By:_________________________________


                                         -43-


<PAGE>
                                                                          LOT A

                                   Name:
                                   Title:




                                         -44-


<PAGE>
                                                                          LOT A

                        WAIVER OF PRIOR HEARING CERTIFICATION


          Tenant acknowledges that the above Lease authorizes and empowers
Landlord, without any prior notice or a prior hearing, to cause the entry of
judgments against the undersigned for possession of the Leased Premises and
immediately thereafter, without prior notice or a prior hearing, to exercise
post-judgment enforcement and execution remedies.  Tenant acknowledges that
Tenant has agreed to waive the Tenant's rights to prior notice and a hearing
under the Constitution of the United States, the Constitution of the
Commonwealth of Pennsylvania and all other applicable state and federal laws, in
connection with Landlord's ability to cause the entry of judgments against the
Tenant and immediately thereafter exercise Landlord's post-judgment enforcement
and execution remedies (which may include, without limitation, removal of the
Tenant from the Leased Premises by law enforcement officers).  Tenant's counsel
has reviewed the legal impact of this waiver with the Tenant and Tenant
acknowledges that Tenant has freely waived such rights as an inducement to
Landlord to enter into this Lease.  The individual executing this Certification
warrants that he or she is authorized to agree to such waiver on behalf of
Tenant.

                                   TENANT:

                                   UNISYS CORPORATION, a Delaware
                                   corporation


Date:____________, 19____          By:________________________________

                                   Name:_____________________________

                                   Title:______________________________


<PAGE>
                                                                          LOT A

                                     EXHIBIT B

                       Capital Improvements and Replacements


     A.   In addition to its other obligations set forth under the Lease, Tenant
agrees to expend funds each Lease Year (as defined below) for Capital
Improvements (as defined below) to the Property on a cumulative basis not less
than two hundred thousand dollars ($200,000) per year.  If Tenant expends in
excess of two hundred thousand dollars ($200,000) in any Lease Year for Capital
Improvements required by Paragraph 6.2, and has expended an amount equal to two
hundred thousand dollars ($200,000) times the number of complete Lease Years
elapsed for Capital Improvements (the "Required Expenditures"), Tenant may
credit all such amounts in excess of the Required Expenditures towards payments
to be made pursuant to Paragraph 6.2 of the Lease and this Exhibit B in
subsequent Lease Years; as of the Commencement Date of this Lease, Landlord and
Tenant agree that Tenant has a credit of One Million Seven Hundred Thousand
Dollars ($1,700,000.00), which is the remaining credit in excess of Required
Expenditures made by Tenant under the First Lease.

     B.   Capital Improvements shall mean replacement of major systems and
building components.

          (i)  The definition of Capital Improvements includes, but is not
limited to:

               -    The types of Improvements included in Schedule 1 (other than
                    items identified with an asterisk thereon)

               -    Repaving of parking lots;

               -    Replacement of roofs;

               -    Replacement of coolers, chillers, electrical switch gear,
                    substations, elevators, emergency or backup generators,
                    plumbing, electrical, HVAC or fire alarm systems;

               -    Installation of energy management systems;

               -    Replacement of fire hydrants;

               -    Oil to gas conversions; and

               -    Separation of utilities or separate metering between
                    Buildings A, B or C referred to in First Lease.


<PAGE>
                                                                          LOT A

          (ii) Capital Improvements shall not include the following expenditures
by Tenant:

               -    Expenditures normally characterized as "tenant
                    improvements," renovations or retrofitting of interior
                    spaces, including drop ceilings, painting, carpeting,
                    demising and related HVAC, sprinkler and electrical work
                    (except that HVAC and sprinkler work constituting an
                    improvement to the major building components or systems
                    shall be classified as Capital Improvements);

               -    Capital expenditures for interior or exterior improvements
                    not affecting the major systems or building components,
                    including, but not limited to, new entrances, exits,
                    windows, cafeteria equipment, cafeteria enlargement and
                    installation of truck dock doors;

               -    Expenditures required in connection with computer rooms,
                    data systems or other special purpose uses;

               -    Routine maintenance such as caulking, painting, servicing or
                    overhauling existing systems;

               -    Soft costs of any kind or the allocable cost of Unisys
                    personnel;

               -    Expenditures necessary to comply with Laws such as work
                    necessary to comply with local or township codes (unless
                    such work constitutes an improvement to the building
                    components or major systems);

               -    Structural repairs; or

               -    Any expenditure made for cosmetic purposes or which does not
                    improve the major systems or building components of the
                    Property.

     C.   Tenant confirms to Landlord that since 1994, approximately eighty
percent (80%) of the area of the roof of the Building has been replaced, and
that the remaining portion of the roof shall be completed by December 31, 1997.

     D.   Tenant shall provide Landlord, prior to the beginning of each Lease
Year, full disclosure of Tenant's final capital expenditure budgets and plans
with respect to the Property 


<PAGE>

                                                                          LOT A

for such Lease Year and shall provide, at such time, a complete and accurate
reconciliation of Capital Improvements performed in the prior Lease Year.

     E.   Tenant represents and warrants to Landlord that to the best of
Tenant's knowledge, the information on Schedule 1 represents substantially all
of the capital improvements to the Leased Premises, and the costs thereof during
the years referred to therein.

     F.   For the purposes of this Exhibit B, "Lease Year" shall mean each
twelve (12) month period commencing with the first day of the calendar month 
following the Commencement Date.

<PAGE>
                                                                          LOT A


                              SCHEDULE 1 TO EXHIBIT B
                                          
                                CAPITAL EXPENDITURES
                                          
                                    1987 TO 1991


DESCRIPTION                                        COST            YEAR
- -----------                                        ----            ----

Installed 480 volt indoor electrical
substation including switch gear and
installation                                      100,000          1987

Replaced two chilled water pumps in A
building with Crane Deming Pumps                   14,897          1987

* Replaced dishwasher building A cafeteria
in executive kitchen                                2,285          1987

* Replaced pressure steamer in A building
cafeteria                                           6,749          1988

Auxiliary feeder for 1A boiler room
from sub-station #4                                33,710          1988

Replaced water softener for A building              7,405          1988

* Replaced two ovens in building A cafeteria        8,050          1988

Replaced three condenser water pumps for
A/C in A building                                  35,198          1988

Replaced five hot water pumps in A building        18,657          1989

Replaced A/C/Heating units in Main Guard
House, A building                                   5,372          1989

Fire alarm system and detection
to A building, replaced couch system
with Pyrotronics XL-3                             167,714          1989

Replaced two hot water pumps in A building         12,602          1990

<PAGE>
                                                                          LOT A


Installed smoke detection system in
Engineering Row in A building                      13,662          1990

Upgrade elevator doors safety mechanisms
on three elevators in A, B & C buildings            6,611          1990

Remote cooling for emergency alternator,
in A building basement                              6,348          1990

Replace two automatic hydraulic dockboards
located in A building                              16,443          1990

Auxiliary electrical feeder with transfer
switch from basement to Corporate area             15,455          1990

Replace motor starter for A building
fire pump                                          14,787          1990

Repaired and upgraded PA system in A
building                                            5,983          1990

Convert oil fired boilers in A building
to natural gas with #4 fuel oil backup            153,527          1991

Replace and upgrade parking lot lights
in A building                                      10,000          1991

Replace starter for diesel fire pumps
in A building                                      12,243          1991

HVAC energy management control unit
in A building                                       2,748          1991

Replace automatic dock leveler, A building          8,925          1991

<PAGE>
                                                                          LOT A

                                     EXHIBIT C
                                          
                                   RENT SCHEDULE

Annual Rent

The Base Annual Rent payable during the initial Lease Term shall be as follows:

For the period from the Commencement Date, April 1, 1997 
through June 30, 1997                                            $1,060,795

For the period from July 1, 1997 through June 30, 1998           $4,329,171

For the period from July 1, 1998 through June 30, 1999           $4,431,143

For the period from July 1, 1999 through June 30, 2000           $4,534,856

For the period from July 1, 2000 through June 30, 2001           $4,626,120

For the period from July 1, 2001 through June 30, 2002           $4,719,213

For the period from July 1, 2002 through June 30, 2003           $4,814,163

For the period from July 1, 2003 through June 30, 2004           $4,911,011

For the period from July 1, 2004 through June 30, 2005           $5,009,806

For the period from July 1, 2005 through June 30, 2006           $5,110,569

For the period from July 1, 2006 through June 30, 2007           $5,213,354


For the period from July 1, 2007 through June 30, 2008           $5,318,191

For the period from July 1, 2008 through June 30, 2009           $5,425,122

Annual Extension Rent

The Base Annual Rent for the first year (July 1, 2009 through June 30, 2010) of
the First Extension Period shall be ninety percent (90%) of Fair Market Rent,
but not less than $5,149,246.00.


<PAGE>
                                                                          LOT A

Beginning the first day of the second year of the First Extension Period and on
each annual anniversary thereafter, the Base Annual Rent shall be increased by
two percent (2%) per annum.

The Base Annual Rent for the first year July 1, 2015 through June 30, 2016 of
the Second Extension Period shall be ninety percent (90%) of Fair Market Rent,
but not less than $5,685,184.00.

Beginning the first day of the second year of the Second Extension Period and on
each annual anniversary thereafter, the Base Annual Rent shall be increased by
two percent (2%) per annum.

If Landlord and Tenant cannot mutually agree on the Fair Market Rent for the
first year of the Leased Premises for either the First Extension Period or the
Second Extension Period, the Fair Market Rent for the Leased Premises for the
first year shall be determined in accordance with Paragraph 17.7 of the Lease to
which this is an Exhibit.


<PAGE>

                                                                  Exhibit 10.7

                                                                     LOT B


                                   LEASE AGREEMENT


     THIS LEASE AGREEMENT (the "Lease"), is made as of March 12, 1997 between
BLUE BELL INVESTMENT COMPANY, L.P., a Delaware limited partnership, whose
address is c/o Clay W. Hamlin, III, The Shidler Group/Philadelphia, One Logan
Square, Suite 1105, Philadelphia, Pennsylvania 19103 (the "Landlord"), and
UNISYS CORPORATION, a Delaware corporation, whose address is P.O. Box 500,
Township Line and Union Meeting Roads, Blue Bell, Pennsylvania 19424 (the
"Tenant").

                                 W I T N E S S E T H:

     Landlord and Tenant entered into a Lease as of June 30, 1992 (the "First
Lease") for Tenant's leasing of certain real estate of which the Leased Premises
(defined below) are a part.  Pursuant to Paragraph 17.6 of the First Lease,
Landlord and Tenant are dividing the First Lease into Separate Leases (as
defined in the First Lease) to replace the First Lease.  This Lease is one of
the Separate Leases.  

      In consideration of the mutual covenants and agreements contained herein,
the parties, intending to be legally bound hereby, agree as follows:

                                      ARTICLE I
                                     DEFINITIONS

     1.1. Defined Terms.  For purposes of this Lease, the following terms shall
have the following meanings:

     "Additional Rent" shall have the meaning set forth in paragraph 3.2.

     "Appraiser" shall have the meaning set forth in Subparagraph 12.2(d).

     "Award" shall mean all compensation, sums, or anything of value awarded,
paid or received on a total or partial Condemnation.

     "Bankruptcy Code" shall have the meaning set forth in Subparagraph 13.7(g).

     "Base Annual Rent" shall have the meaning set forth in Paragraph 3.1.

     "Building" shall mean the building constituting a portion of the Leased
Premises, which building, as of the Commencement Date consists of approximately,
208,854 rentable square feet.


                                         -1-
<PAGE>

                                                                     LOT B

     "Commencement Date" shall mean the date of this Lease.

     "Condemnation" shall mean (i) any taking by the exercise of the power of
eminent domain, whether by legal proceedings or otherwise, or (ii) a voluntary
sale or transfer by Landlord to any condemnor, either under threat of
condemnation or while legal proceedings for condemnation are pending.

     "Condemnor" shall have the meaning set forth in Paragraph 12.2.

     "Date of Taking" shall mean the date the condemnor has the right to
possession of the property being condemned.

     "Environmental Indemnity" shall mean the Environmental Indemnity Agreement
of even date herewith between Landlord and Tenant and relating to the real
property constituting the Leased Premises.

     "Extension Periods" means the First Extension Period and the Second
Extension Period.

     "First Extension Period" shall have the meaning set forth in Subparagraph
2.2(b).

     "Fair Market Rent" shall mean the fair market rental value determined as if
the Leased Premises were available in the then rental market at the time such
determination is to be made for comparable buildings in comparable metropolitan
Philadelphia locations and assuming that Landlord has had a reasonable time to
locate a willing tenant who rents with the knowledge of the uses to which the
Leased Premises can be adapted without major structural, building systems or
interior renovation, and that neither Landlord nor the prospective tenant is
under any compulsion to rent.

     "Fair Market Value" shall mean the aggregate amount which would be
obtainable in an arm's length transaction at the time such determination is to
be made for the purchase of a fee simple title of the Leased Premises (assuming,
for valuation purposes only, that the same are free and clear of all mortgage or
similar liens) between an informed and willing buyer  under no compulsion to buy
and an informed and willing seller under no compulsion to sell.

     "HVAC" shall have the meaning set forth in Subparagraph 6.1(a).

     "Improvements" means the Landlord's Improvements and the Leasehold
Improvements.

     "Initial Lease Term" shall have the meaning set forth in Subparagraph
2.2(a).



                                         -2-
<PAGE>

                                                                     LOT B

     "Landlord's Improvements" shall mean all improvements, fixtures, equipment
and other property on the Leased Premises on the Commencement Date (except for
Trade Fixtures and Vendor Supplied Equipment) and all improvements, fixtures and
equipment constructed on the Leased Premises at Landlord's expense during the
Lease Term.

     "Laws" shall mean any judicial decision, statute, constitution, ordinance,
resolution, regulation, rule, administrative order or other requirement of any
municipal, county, state, local, federal or other government agency or authority
having jurisdiction over the parties to this Lease or the Leased Premises, or
both, in effect either at the Commencement Date or any time during the Lease
Term, including, without limitation, any regulation, order or policy of any
quasi-official entity or body (e.g. board of fire examiners, public utilities or
special district).

     "Lease Term" shall mean the Initial Lease Term and, to the extent that
Tenant exercises its options to extend beyond the Initial Lease Term, shall also
include the First Extension Period and the Second Extension Period.

     "Leased Premises" shall mean the real property described in Exhibit A
hereto, including all Improvements thereon.

     "Leasehold Improvements" shall mean all improvements, additions,
alterations and fixtures installed on the Leased Premises at Tenant's expense
after the Commencement Date at any time which are permanently attached or
affixed to the Leased Premises.

     "Lender" shall mean any beneficiary, mortgagee, secured party or other
holder of any deed of trust, mortgage or other written security device or
agreement affecting Landlord's interest in the Leased Premises and any note and
other obligations secured thereby and shall also mean any lender making a loan
or otherwise extending credit in connection with the purchase of the Leased
Premises from Tenant.

     "Less Than Substantially All" shall mean a portion of the Leased Premises
that is not all or Substantially All of the Leased Premises.

     "Minor Work" shall have the meaning set forth in Subparagraph 5.1(a).

     "Nondisturbance and Subordination Agreement" shall have the meaning set
forth in Subparagraph 17.3(b).

     "Operating Expenses" shall include all expenses of any nature relating to
the operation, maintenance, repair or upkeep of the Leased Premises, all of
which shall be borne by Tenant, including, without limitation, those expenses
referred to in Paragraphs 6.1, 6.2, 7.1 and 7.2.


                                         -3-
<PAGE>

                                                                     LOT B

     "Paragraph 12.2 Value" shall have the meaning set forth in Paragraph 12.2
hereof.

     "Present Value" shall mean with respect to any amount due at a future time
or times referred to in this Lease, the discounted value of such amount computed
by discounting such amount by Thirty-day LIBOR as of the date of such
determination.

     "Prime" shall mean the interest rate quoted by Citibank, N.A., New York,
New York, or its successors, as the publicly announced applicable lending rate
for its most creditworthy commercial customers.

     "Private Restrictions" shall mean all recorded covenants, conditions and
restrictions, agreements, other documents, reciprocal easement agreements and
any unrecorded documents known to Tenant, in effect on the Commencement Date, or
thereafter entered into or consented to by Tenant, or otherwise expressly
permitted by this Lease, affecting the Leased Premises from time to time.

     "Real Property Taxes" shall have the meaning set forth in Paragraph 8.1
hereof.

     "Rent" shall mean Base Annual Rent and Additional Rent.

     "Second Extension Period" shall have the meaning set forth in Subparagraph
2.2(b) hereof.

     "Subdivision Plan" shall mean that certain Subdivision Plan prepared by
Chambers Associates, Inc., Consulting Engineers and Surveyors, Center Square,
Pennsylvania, dated September 1, 1990, last revised February 25, 1991, and
recorded March 8, 1991 in Plan Book A-52 page 357.

     "Substantially All" shall mean a portion of the Leased Premises (that is,
less than all of the Leased Premises) which leaves remaining a balance that may
not be economically operated for the purpose for which the Leased Premises was
operated prior to the Condemnation in question, in Landlord's and Tenant's
reasonable judgment.

     "Thirty-day LIBOR" shall mean the London Interbank Offered Rate for thirty
(30) days, fixed at 11 a.m. (London time), as quoted to Landlord by Citibank,
N.A., New York, New York, or its successors.

     "Trade Fixtures" shall mean all movable equipment, furniture, furnishings
and other personal property belonging to Tenant on the Leased Premises or
installed in the Leased Premises by Tenant at Tenant's expense which are not
permanently attached to the Leased Premises; provided, however, that all of
Tenant's signs and Tenant's equipment not necessary for the operation of the
Leased Premises without regard to the particular business 


                                         -4-
<PAGE>

                                                                     LOT B

conducted thereon (i.e. systems and facilities not integral to the buildings and
other improvements) shall be Trade Fixtures whether or not permanently attached
or affixed to the Leased Premises.

     "Trust Agreement" means the Trust Agreement of even date with this Lease
among Landlord, Tenant and the United States Trust Company of New York, as
trustee, as such Trust Agreement may be amended and shall include any specific
successor Trust Agreement relating solely to this Lease and entered into
pursuant to Paragraph IX.B of the Trust Agreement.

     "Vendor Supplied Equipment" shall mean property on the Leased Premises
belonging to a third party, other than Landlord or Tenant.


                                     ARTICLE II

                               DEMISE AND ACCEPTANCE

     2.1. Demise of Premises.  Landlord hereby demises and leases to Tenant, and
Tenant hereby leases from Landlord, the Leased Premises for the Lease Term, upon
and subject to the terms and conditions of this Lease.  During the Lease Term,
Tenant shall have the nonexclusive right to use for vehicular access purposes
the access roads through Lot A, Lot B and Lot C shown on the Subdivision Plan in
common with the owners and tenants, and their respective invitees of such Lot A,
Lot B and Lot C.

     2.2. Term.

          (a)  This Lease shall be for a period commencing on the Commencement
Date and ending at midnight on June 30, 2009 (the "Initial Lease Term").

          (b)  Provided that there exists no default by Tenant under this Lease
at the time of exercise, and at the commencement of the applicable Extension
Period, Tenant shall have the option to extend the Initial Lease Term for two
(2) periods, the first for sixty (60) months (referred to herein as the "First
Extension Period") and the second for fifty nine months (59) (the "Second
Extension Period").  Tenant may exercise its option only by written notice to
Landlord given (i) with respect to the First Extension Period, not later than
five hundred and forty seven (547) days prior to the expiration of the Initial
Lease Term, and (ii) with respect to the Second Extension Period, not less than
five hundred and forty seven (547) days prior to the expiration of the First
Extension Period.  If Tenant elects to exercise its first option to extend, the
First Extension Period shall commence on the first (1st) day 



                                         -5-
<PAGE>

                                                                     LOT B

following the expiration of the Initial Lease Term.  If Tenant elects to
exercise its second option to extend, the Second Extension Period shall commence
on the first (1st) day following the expiration of the First Extension Period. 
Tenant shall not have the option to extend the Lease Term for the Second
Extension Period unless Tenant have first exercised Tenant's option to extend
the Lease Term for the First Extension Period.  Such extensions of the Lease
Term shall be upon the same terms and conditions as set forth in this Lease,
except that Tenant shall not have any further rights to extend the Lease Term
beyond the Second Extension Period and the Base Annual Rent under this Lease
shall be increased and determined as set forth on Exhibit C.

     (c)  Acceptance of Premises.  Tenant confirms that Tenant accepted
possession of the Leased Premises in the condition existing as of the
Commencement Date.  Landlord makes no warranty, express or implied, as to the
condition of the Leased Premises or the suitability of the Leased Premises for
Tenant's use or for any other purpose.  Tenant acknowledges that it has had
possession of the Leased Premises prior to the date of this Lease and is fully
aware of and thoroughly familiar with the condition (including, without
limitation, environmental conditions) of the Leased Premises.


                                    ARTICLE III

                                        RENT

     3.1. Base Annual Rent.  Commencing on the Commencement Date and continuing
throughout the Lease Term, Tenant shall pay to Landlord as annual rent (the
"Base Annual Rent") the amounts determined in accordance with, and during the
periods indicated on Exhibit C hereto.  The Base Annual Rent for each period
indicated on Exhibit C shall be paid in equal quarterly installments in advance
on the first day of each quarterly period.  A quarterly period shall mean a
period of three (3) calendar months, and the quarterly periods shall commence on
April 1, 1997.  Tenant has paid Base Annual Rent through March 31, 1997.

     3.2. Additional Rent.  Commencing on the Commencement Date and continuing
throughout the Lease Term, Tenant shall pay, as additional rent, all other
amounts due and payable by Tenant under this Lease (collectively, the
"Additional Rent").

     3.3. Payment of Rent.  All Rent required to be paid in quarterly
installments shall be paid in advance on the first day of each quarterly period
during the Lease Term.  All Rent (including Base Annual Rent and Additional
Rent) shall be paid in lawful money of the United States, without any abatement,
deduction or offset whatsoever, except to the extent otherwise specifically
provided in Paragraph 8.5 (relating to tax contests), Paragraph 10.1 (with
respect to Landlord's negligence or willful misconduct), Paragraph 11.1
(relating to failure to make insurance proceeds available to Tenant), and
Paragraph 12.2 (relating to partial condemnation), and Paragraph 17.10 (relating
to indemnity for brokerage fees), and 


                                         -6-
<PAGE>

                                                                     LOT B

without any prior demand therefor, to Landlord at the address for Landlord first
above written or such other address or by wired funds (at Tenant's election) to
Landlord's account, as Landlord may designate by written notice to Tenant from
time to time (including, without limitation to a Lender, or Lenders) or as
otherwise specified by the provisions of this Lease.  Tenant's obligation to pay
Base Annual Rent shall be prorated to account for a partial quarterly period at
the commencement and the expiration or sooner termination of the Lease Term and
the prorated amount for the partial period at the commencement of the Lease Term
shall be due and payable on the Commencement Date.  Tenant's obligation to pay
Additional Rent shall be prorated at the expiration or sooner termination of the
Lease Term.

     3.4. Net Lease.  This Lease is what is commonly called a "Triple Net
Lease," it being understood that Landlord shall receive the Rent free and clear
of any and all other impositions, taxes, liens, charges or expenses of any
nature whatsoever in connection with the ownership, operation, maintenance
(whether structural or otherwise), repair, occupancy, and use of the Leased
Premises (excluding payments of any mortgage or obligations or charges for
capital improvements or other matters incurred by Landlord and not required to
be made by Tenant under this Lease).  Except as may be otherwise specifically
provided in this Paragraph, (relating to Landlord's mortgages or other
obligations) , Paragraph 8.5 (relating to tax contests), Paragraph 11.1
(relating to failure to make insurance proceeds available to Tenant), Paragraph
10.1 (with respect to Landlord's negligence or willful misconduct), Paragraph
12.2 (relating to partial condemnation), and Paragraph 17.10 (relating to
indemnity for brokerage fees), Landlord shall not be responsible for any costs,
expenses, or charges of any kind or nature respecting the Leased Premises. 
Landlord shall not be required to render any services of any kind to Tenant or
to the Leased Premises.


                                     ARTICLE IV

                               USE OF LEASED PREMISES

     4.1. Use of Premises; Compliance with Laws.  Tenant shall use the Leased 
Premises only for the purposes permitted by Laws and in accordance with 
Private Restrictions.  Tenant shall not use or permit any person to use the 
Leased Premises for any use or purpose in violation of any Laws or Private 
Restrictions, including, without limitation, Laws pertaining to the 
environmental condition of the Leased Premises.  Tenant shall, at its own 
cost and expense, abide by and promptly observe and comply with all Laws and 
Private Restrictions applicable to the Leased Premises.  Tenant shall not do 
or permit anything to be done in or on the Leased Premises which might cause 
damage to the Leased Premises or might place any loads upon any floor, wall 
or ceiling which might damage or endanger any portion of the Leased Premises. 
 Tenant shall not operate any equipment in or on the Leased Premises in a 
manner which will injure the Leased Premises, which will overload existing 
electrical systems or mechanical equipment servicing the Leased Premises, or 
which will 

                                         -7-
<PAGE>

                                                                     LOT B

impair the efficient operation of the sprinkler system (if any) within the 
Leased Premises.  Tenant shall not commit nor permit to be committed any 
waste upon the Leased Premises, and Tenant shall keep the Leased Premises in 
a condition free of any nuisances.

     4.2. Insurance Requirements.  Tenant shall not use the Leased Premises in
any manner or for any purpose (other than the manner in which and the purposes
for which the Leased Premises are used on the Commencement Date), or permit any
use of the Leased Premises or any act to be committed on the Leased Premises, if
any such use or act will cause a cancellation of any insurance policy covering
the Leased Premises.  Tenant shall not sell, keep or use, or permit to be kept,
used, or sold, in or about the Leased Premises any article which may be
prohibited by the standard form of fire insurance policy.  Tenant shall, at its
sole cost and expense, comply with all requirements of any insurance company,
insurance underwriter, or Board of Fire Underwriters which are necessary to
maintain the insurance coverage required under this Lease.

                                     ARTICLE V
                                          
                     TRADE FIXTURES AND LEASEHOLD IMPROVEMENTS
                                          
     5.1. Leasehold Improvements.

          (a)  Except for Minor Work, Tenant shall not construct any Leasehold
Improvements or otherwise alter the Leased Premises without Landlord's prior
approval, and not until Landlord shall have first approved the plans and
specifications therefor, which approvals shall not be unreasonably withheld,
conditioned or delayed.  If Landlord does not object to proposed Leasehold
Improvements within fifteen (15) business days after being presented with plans
and specifications therefor in accordance with this Paragraph 5.1, such proposed
Leasehold Improvements shall be deemed approved.  All such Leasehold
Improvements and alterations (including Minor Work) and all demolition shall be
performed, constructed and installed by Tenant at Tenant's expense, in
substantial compliance with the approved plans and specifications therefor (if
such plans and specifications are required hereunder) and in strict accordance
with all Laws and Private Restrictions.  All such construction and installation
and demolition shall be done in a good and workmanlike manner using materials of
good quality.  Tenant shall not commence construction of any Leasehold
Improvements or alterations or commence any demolition until (i) all required
governmental approvals and permits shall have been obtained and (ii) all
requirements regarding insurance imposed by this Lease shall have been
satisfied.  The term "Minor Work" as used herein, shall mean any construction of
Leasehold Improvements not involving any structural change or substantial change
in the character of the Improvements, and involving a cost of less than Two
Hundred Thousand Dollars ($200,000); provided that, for purposes of determining
such cost, multiple construction or alteration projects shall be aggregated to
the extent they are related to each other, whether undertaken simultaneously or
sequentially.  All Leasehold 


                                         -8-
<PAGE>

                                                                     LOT B

Improvements shall remain the property of Tenant during the Lease Term but shall
not be damaged, altered or removed from the Leased Premises.  If any Minor Work
involves a cost of less than Fifty Thousand Dollars ($50,000), Tenant shall
neither be required to obtain Landlord's prior consent therefor nor shall Tenant
be required to give any prior notice thereof to Landlord.  If any Minor Work
involves a cost of in excess of Fifty Thousand Dollars ($50,000), but less than
Two Hundred Thousand Dollars ($200,000), Tenant shall not be required to obtain
Landlord's prior consent therefor but shall give Landlord ten (10) days prior
written notice of its intention to commence such construction or alteration
together with any then available plans and specifications.  Following completion
of construction or alteration of any Leasehold Improvement, Tenant shall furnish
to Landlord copies of all plans, specifications or drawings prepared by Tenant
in connection with such Leasehold Improvement.  At the expiration or sooner
termination of the Lease Term, all Leasehold Improvements shall be surrendered
to Landlord as a part of the Leased Premises and shall then become Landlord's
property, and Landlord shall have no obligation to reimburse Tenant for all or
any portion of the value or cost thereof; provided, however, that if Landlord
shall require Tenant to remove any Leasehold Improvements (not constructed or
installed in accordance with Paragraph 5.1 or Paragraph 6.2), in accordance with
the provisions of Paragraph 15.1, then Tenant shall so remove such Leasehold
Improvements prior to the expiration or sooner termination of the Lease Term.

          (b)  In connection with any proposed Leasehold Improvements or other
alterations or additions or work or demolition by Tenant and in addition to
other conditions that may be reasonably imposed by Landlord as a condition to
Landlord's approval, Tenant shall secure all necessary licenses and permits; use
reasonable efforts to secure effective waivers from all persons or firms who
will be furnishing labor or materials, waiving the right to file any mechanics
lien against the Leased Premises or interest of Landlord or Tenant therein;
cause any contractors and subcontractors to carry workmen's compensation
insurance in statutory amounts and comprehensive public liability insurance in
accordance with current industry practice and use reasonable efforts to obtain
and deliver to Landlord certificates of all such insurance.

          (c)  All Leasehold Improvements, demolition, repairs, alterations,
additions and improvements performed by Tenant shall be done in a good and
workmanlike manner in compliance with all Laws, Private Restrictions, and the
reasonable requirements of the insurers of the Leased Premises.  During the
performance of any such work by Tenant, Tenant shall obtain and maintain
customary comprehensive general public liability, property damage, builders and
all risk, workmen's compensation and other insurance covering Landlord, Tenant
and each Lender whose mortgage so requires coverage.  Tenant shall promptly pay
for such work and shall discharge any and all liens filed against the Leased
Premises arising therefrom.




                                         -9-
<PAGE>

                                                                     LOT B


          (d)  Tenant shall not permit any mechanics or other liens or claims
thereof to exist upon the Leased Premises or any portion thereof arising out of
the acts, omissions to act, or contracts of Tenant, or anyone claiming by,
through, or under Tenant or for whom Tenant is responsible.  Tenant shall remove
or have removed or remove or have removed by bonding over any mechanics',
materialman's or other lien or claim thereof filed against the Leased Premises,
any other portion thereof, or any other property owned by Landlord, by reason of
work, labor, services or materials provided for or at the request of Tenant or
for any contractor or subcontractor employed by Tenant, or otherwise arising out
of Tenant's use of the Leased Premises and shall exonerate, protect, defend and
hold free and harmless Landlord against and from any and all such claims or
liens.  All persons and other entities are hereby notified that the interest of
Landlord in the Leased Premises shall not be subject to liens for Leasehold
Improvements made by or for Tenant, and that Tenant has no right, power, or
authority to subject the Leased Premises or any part thereof or Landlord's
interest therein, to any mechanics', materialman's or other similar liens.

          (e)  Tenant, with Landlord's prior written consent which shall not be
unreasonably withheld, conditioned or delayed, may, at Tenant's own risk and
expense, lawfully erect or place its standard signs concerning the business of
Tenant within the buildings containing the Leased Premises and/or on the
exterior walls thereof and/or elsewhere on the Leased Premises, and Tenant
agrees to maintain said signs in a good state of repair; to save Landlord
harmless from loss, cost or damages as a result of the erection, maintenance,
existence or removal of such signs; and to repair any damage which may have been
caused by the erection, existence, maintenance or removal of such signs.  At the
end of the Lease Term, Tenant agrees to remove such signs at its expense. 
Landlord hereby expressly consents to all Tenant's signs on the Leased Premises
on the Commencement Date.

     5.2. Alterations Required by Law.  Tenant shall, at its sole cost, make any
alteration, addition, replacement, or change of any sort, whether structural or
otherwise, to the Leased Premises that is required by any Laws.

     5.3. Landlord's Improvements.  All Landlord's Improvements shall become a
part of the realty and belong to Landlord.

                                     ARTICLE VI

                          REPAIR, MAINTENANCE AND SECURITY

     6.1. Tenant's Obligation To Maintain.

          (a)  Tenant shall, at all times and at Tenant's sole cost and expense,
clean, keep, and maintain in good order, condition, and repair the Leased
Premises and every part thereof and all fixtures and Improvements therein and
thereon, through regular inspections 


                                         -10-
<PAGE>

                                                                     LOT B

and servicing, and make replacements of such equipment, systems and building
components as reasonably necessary throughout the Lease Term, including without
limitation (i) all plumbing and sewage facilities (including all sinks, toilets,
faucets and drains), including repair of leaks around ducts, pipes, vents, or
other parts of the heating, ventilation and air conditioning systems ("HVAC") or
plumbing system, (ii) all fixtures, interior walls, floors, ceilings, windows,
doors, entrances, plate glass, showcases, and skylights, (iii) all electrical
facilities and all equipment including all lighting fixtures, lamps, bulbs and
tubes, fans, vents, exhaust equipment and systems, (iv) all fire extinguisher
equipment, (v) any landscaping (including any necessary replanting) and
irrigation systems, (vi) all parking areas (including any necessary painting,
striping, patching or resurfacing), (vii) the exterior, floors and roof of all
buildings contained within the Leased Premises (including any necessary painting
or resurfacing of walls and any patching, resurfacing or replacement of roofs to
preserve the same or to repair leaks) and (viii) all structural parts of the
Improvements.  All glass, both interior and exterior, is the sole responsibility
of Tenant, and any broken glass shall promptly be replaced by Tenant at Tenant's
expense with glass of the same kind (to the extent permitted by applicable
building codes), size and quality.  Tenant shall be responsible for the
maintenance, repair and replacement when necessary of all HVAC equipment which
serves the Leased Premises and shall keep the same in good condition through
regular inspection and servicing.  Tenant shall promptly remove all snow, ice,
and debris from all sidewalks, curbs, parking areas and roadways located upon or
adjacent to the Leased Premises.  At the expiration or other termination of this
Lease, Tenant will deliver the Leased Premises in good condition and repair,
normal wear and tear excepted.

          (b)  All repairs and replacements required of Tenant hereunder shall
be promptly made with materials of good quality.  If the work results in a
change in the character of the Improvements or affects the structural parts of
the Leased Premises or if the estimated cost of any item of repair or
replacement is in excess of Two Hundred Thousand Dollars ($200,000.00), Tenant
shall first obtain Landlord's written approval, which shall not be unreasonably
withheld, conditioned or delayed, provided such repairs and replacements shall
otherwise comply with the requirements of Article V.

          (c)  Tenant shall not be required to replace the roof on any of the
Improvements or resurface any of the parking lots on the Leased Premises within
the twelve (12) months prior to the expiration of the Lease Term, provided that
Tenant shall have otherwise performed its obligations under this Paragraph 6.1.

     6.2. Intentionally Omitted

     6.3. Security.  Tenant shall employ and coordinate the services of
reasonably skilled and responsible persons as security guards, janitors and
maintenance workers, or such other staff, as may be necessary, in Tenant's
reasonable judgment, for the security, protection and maintenance of the Leased
Premises.  Such individuals shall be under the 


                                         -11-
<PAGE>

                                                                     LOT B

supervision, direction and control of Tenant who shall fix their compensation
and have the exclusive right to employ and terminate employment of any and all
such individuals or such individuals employer; such individuals shall not be or
be deemed to be the employees of Landlord for any purpose whatsoever.


                                     ARTICLE VII

                            WASTE DISPOSAL AND UTILITIES

     7.1. Waste Disposal.  Tenant shall store its waste in accordance with all
applicable Laws either inside the Building) contained within the Leased Premises
or within outside trash enclosures which are designed for such purpose.  All
entrances to such outside trash enclosures shall be kept closed, and waste shall
be stored in such manner as not to be visible from the exterior of such outside
enclosures.  Tenant shall cause all of its waste to be regularly removed from
the Leased Premises at Tenant's sole cost.  Tenant shall keep all fire corridors
and mechanical equipment rooms in the Leased Premises free and clear of all
obstructions at all times.

     7.2. Utilities.  Tenant shall promptly pay, as the same become due, all
charges for water, gas, electricity, telephone, sewer service, waste pick-up,
and any other utilities, materials or services furnished directly or indirectly
to or used by Tenant on or about the Leased Premises during the Lease Term. 
Landlord, upon reasonable prior notice to Tenant, and on not more than a
quarterly basis, may inspect Tenant's records of payment of utilities.

                                    ARTICLE VIII

                                REAL PROPERTY TAXES

     8.1. Real Property Taxes Defined.  The term "Real Property Taxes" as used
in this Lease shall mean (i) all taxes, assessments, levies, and other charges
of any kind or nature whatsoever, general and special, foreseen and unforeseen
(including all installments of principal and interest required to pay any
general or special assessments for public improvements and any increases
resulting from reassessments caused by any change in ownership) now or hereafter
imposed by any governmental or quasi-governmental authority or special district
having the direct or indirect power to tax or levy assessments, which are levied
or assessed against, or with respect to the value, occupancy or use of, all or
any portion of the Leased Premises (as now constructed or as may at any time
hereafter be constructed, altered, or otherwise changed) or Landlord's interest
therein; any Improvements located within the Leased Premises (regardless of
ownership); the fixtures, equipment and other property of Landlord, real or
personal, that are an integral part of and located on the Leased Premises; or
parking areas, public utilities, or energy within the Leased Premises; 


                                         -12-
<PAGE>

                                                                     LOT B

and (ii) all charges, levies or fees imposed by reason of environmental
regulation or other governmental control of the Leased Premises.  If at any time
during the Lease Term the taxation or assessment of the Leased Premises
prevailing as of the Commencement Date shall be altered so that in lieu of or in
addition to any Real Property Taxes described above, there shall be levied,
assessed or imposed (whether by reason of a change in the method of taxation or
assessment, creation of a new tax or charge, or any other cause) an alternative
or additional tax or charge (i) on the value, use or occupancy of the Leased
Premises or Landlord's interest therein, or (ii) on or measured by the gross
receipts, gross income or gross rentals from the Leased Premises, on Landlord's
business of leasing the Leased Premises, or computed in any manner with respect
to the operation of the Leased Premises, then any such alternate or additional
tax or charge, however designated, shall be included within the meaning of the
term "Real Property Taxes" for purposes of this Lease.  If any Real Property
Taxes are based upon property or rents unrelated to the Leased Premises, then
only that part of such Real Property Taxes that is fairly allocable to the
Leased Premises shall be included within the meaning of the term "Real Property
Taxes."  Notwithstanding the foregoing, the term "Real Property Taxes" shall not
include estate, inheritance, transfer, gift or franchise taxes of Landlord or
Landlord's federal, state or local income tax capital stock tax or wealth tax.

     8.2. Tenant's Obligation To Pay.  Landlord and Tenant agree that all bills
for Real Property Taxes shall be sent directly by the appropriate government or
quasi government authorities to Tenant.  As Additional Rent, Tenant shall pay
directly to the appropriate governmental or quasi-governmental authorities all
Real Property Taxes no later than ten (10) days before such Real Property Taxes
become payable with any interest or penalty for late payment.  Tenant shall pay
such taxes before the due date therefor and shall be responsible for payment of
any interest or penalties with respect thereto.  Concurrently with any such
payment, Tenant shall supply Landlord with written evidence that all Real
Property Taxes then due and payable shall have been paid in accordance with this
Article.  Tenant shall only be required to pay those Real Property Taxes or
installments thereof which are payable with respect to periods during the Lease
Term, with appropriate proration at the end of the Lease Term.

     8.3. Taxes on Tenant's Leased Premises.  Tenant shall pay by the due date
therefor any and all taxes, assessments, license fees, and public charges
levied, assessed, or imposed against Tenant or Tenant's interest in this Lease
or Trade Fixtures which become payable during the Lease Term.

     8.4. Tax Segregation.  The Building is separately assessed and taxed as of
the Commencement Date.

     8.5. Tax Contest.  In the event that Tenant shall desire in good faith to
contest or otherwise review by appropriate legal or administrative proceeding
any Real Property Taxes, 



                                         -13-
<PAGE>

                                                                     LOT B

Tenant shall, no later than thirty (30) days after Tenant receives notice of the
Real Property Taxes assessment Tenant desires to contest, give Landlord written
notice of its intention to do so.  Tenant may withhold payment of the Real
Property Taxes being contested if, but only if, both (i) nonpayment is permitted
during the pendency of such proceedings without the foreclosure of any tax lien
or the imposition of any fine or penalty and (ii) Tenant shall obtain and
furnish Landlord with a bond or other security device, and otherwise comply with
the requirements of the Lenders, sufficient to protect Landlord's interest in
the Leased Premises in an amount not less than one hundred percent (100%) of the
amount contested.  Any such contest shall be prosecuted to completion (whether
or not this Lease shall have expired or terminated in the interim) and shall be
conducted without delay and solely at Tenant's expense.  Tenant shall indemnify,
defend, and hold harmless Landlord from and against any and all expense,
liability or damage resulting from such contest or other proceeding.  At the
request of Tenant, Landlord shall join in any contest or other proceedings which
Tenant may desire to bring pursuant to this Paragraph 8.5. Tenant shall pay all
of Landlord's reasonable expenses (including attorneys' fees) arising out of
such joinder.  Within thirty (30) days after the final determination of the
amount due from Tenant with respect to the Real Property Taxes contested, Tenant
shall pay the amount so determined to be due, together with all costs, expenses
and interest, whether or not this Lease shall have then expired or terminated. 
Any recovery or refund of Real Property Taxes in accordance with this
Subparagraph 8.5 shall be the property of and shall be paid to Tenant.


                                     ARTICLE IX
                                          
                                     INSURANCE
                                          
     9.1. Tenant's Insurance.  Tenant shall, at its own expense and cost,
maintain the following policies of insurance in full force and effect during the
Lease Term:

          (a)  "All risk" insurance, including but not limited to, loss or
damage occasioned by fire, the perils included in the so-called extended
coverage endorsement, vandalism and malicious mischief, sprinkler leakage,
collapse, explosion, earthquake, flood and water damage and containing
Replacement Cost, Lease Amount and Demolition and Increased Cost due to
Ordinance endorsements covering the Leased Premises and all replacements and
additions thereto, and all fixtures and equipment.  The foregoing coverage shall
be provided in amounts sufficient to provide one hundred percent (100%) of the
full replacement cost of the Leased Premises, and shall be determined from time
to time, but not more frequently than once in any twenty-four (24) calendar
months, at Tenant's expense, at the request of Landlord, by any appraiser
selected by Tenant and approved by Landlord and the insurance carrier, which
approval by Landlord shall not be unreasonably withheld, conditioned or delayed.



                                         -14-
<PAGE>

                                                                     LOT B

          (b)  comprehensive general liability insurance applying to the use and
occupancy of the Leased Premises, or any part thereof, and the business operated
by Tenant on the Leased Premises, with coverages including, but not limited to,
premises operations, explosion, collapse, sprinkler leakage, and products and
completed operations, blanket contractual, Broad Form property damage, and
independent contractors.  Such insurance shall include Broad Form Contractual
liability insurance coverage insuring all of Tenant's indemnity obligations
under this Lease.  The general liability coverage shall have a minimum combined
single limit of liability of at least One Million Dollars ($1,000,000.00) and a
general aggregate limit of One Million Dollars ($1,000,000.00). Tenant shall
carry an umbrella policy in the amount of at least twenty-five million dollars
($25,000,000).

          (c)  Workers' compensation insurance in accordance with applicable Law
and employers' liability insurance.

          (d)  Boiler and Machinery Broad Form policy covering explosion
insurance in respect of steam and pressure boilers and similar apparatus, if
any, located on the Leased Premises in an amount equal to one hundred percent
(100%) of the full replacement cost of the Leased Premises.

          (e)  Such other insurance with respect to the Leased Premises as
Landlord or any Lender, from time to time may reasonably request against such
insurable hazards or risks which at the time in question are commonly insured
against in the case of property similar to, or whose use is similar to the use
of, the Leased Premises.

     9.2. Policies.  Tenant shall furnish to Landlord on the Commencement Date
and thereafter within forty five (45) days prior to the expiration of each such
policy, certificates of insurance issued by the insurance carrier of each policy
of insurance required under this Lease showing applicable coverages.  Each
certificate shall expressly provide that such policies shall not be cancellable
or subject to reduction of coverage or otherwise be subject to modification
except after thirty (30) days' prior written notice to the parties named as
insureds herein and other certificate holders.  At Landlord's request, Tenant
shall deliver abstracts of such policies to Landlord and Landlord's designees
holding an interest in the Leased Premises.  Landlord, Landlord's successors and
assigns and any designee of Landlord holding any interest in the Leased
Premises, including the holder of any fee, interest or mortgage, shall be
additional named insureds under each policy of insurance maintained by Tenant,
except for workers' compensation insurance.  All insurance policies carried by
Tenant pursuant to this Article IX shall be issued by insurance companies with a
rating of "Good" or better as rated in Best's Insurance Guide.  Any deductible
amounts under any insurance policies required hereunder shall be subject to
Landlord's prior written approval if such deductibles would exceed One Hundred
Thousand Dollars ($100,000.00) as to property hazard coverage, One Million
Dollars ($1,000,000.00) as to liability coverage, and Ten Million Dollars
($10,000,000.00) as to earthquake.  All policies shall be written to apply to 



                                         -15-
<PAGE>

                                                                     LOT B

property damage, personal injury and other covered loss, however occasioned,
occurring during the policy term and shall be endorsed to add Landlord and any
designee of Landlord having any interest in the Leased Premises as an additional
insured (provided that such endorsement shall not include Landlord or its
agents, employees or contractors as additional insureds for acts of negligence
or willful misconduct by Landlord included within Landlord's liability under
Paragraph 10.1 and excluded from Tenant's indemnity pursuant to Paragraph 10.2)
and to provide that such coverage shall be primary and that any insurance
maintained by Landlord shall be excess insurance only.  All such insurance shall
provide for severability of interest; shall provide that an act or omission of
one of the named insureds shall not reduce or avoid coverage to the other named
insureds; and shall afford coverage for all claims based on acts, omissions,
injury and damage, which claims occurred or arose (or the onset of which
occurred or arose) in whole or in part during the policy period.  If Tenant
shall fail to procure any insurance required under this Lease or to deliver the
certificates or policies required under this Paragraph 9.2, Landlord may, at its
option and in addition to Landlord's other remedies in the event of a default by
Tenant hereunder, procure such insurance for the account of Tenant, and the cost
thereof shall be paid to Landlord as Additional Rent on demand.  Claims under
all property insurance policies covering Landlord's buildings and Landlord's
Improvements shall be adjusted with the insurance company or companies subject
to Landlord's approval.

     9.3. Release and Waiver of Subrogation.  The parties hereto release each
other, and their respective authorized representatives, from any claims for
injury to any persons or damage to property that are caused by or result from
risks insured against under any insurance policies carried by the parties and in
force at the time of such damage, but only to the extent such claims are covered
by such insurance.  This release shall be in effect only so long as the
applicable insurance policies contain a clause to the effect that this release
shall not affect the right of the insured to recover under such policies.  Each
party shall cause each insurance policy obtained by it to provide that the
insurance company waives all rights of recovery by way of subrogation against
either party in connection with any damage covered by such policy.

     9.4. Landlord's Insurance Option.  Landlord, at Landlord's option, and upon
prior notice to Tenant, may procure, at Tenant's sole cost, the insurance
required by this Article IX, or such other insurance as may be deemed necessary
or desirable by Landlord, provided that the cost of such insurance to Tenant
shall not exceed the cost that would have been imposed upon Tenant for insurance
required under this Article IX had Tenant procured such insurance.  If Landlord
elects to procure such insurance, Tenant shall be relieved of Tenant's
obligation to procure such insurance under this Article IX, but Tenant shall
remain obligated to pay the cost of such insurance in accordance with the
requirements of this Article IX.  Landlord shall provide copies of such
insurance to Tenant.  At any time upon at least thirty (30) days' prior notice
to Tenant, Landlord may stop procuring insurance under this 


                                         -16-
<PAGE>

                                                                     LOT B

Paragraph 9.4, in which case Tenant shall be responsible for maintaining
insurance in accordance with the requirements of this Article IX.

                                     ARTICLE X

                              LIMITATION ON LANDLORD'S
                              LIABILITY AND INDEMNITY

     10.1.     Limitation on Landlord's Liability.  Except for loss proximately
caused by Landlord or Landlord's agents', employees', or contractors' negligence
or willful misconduct, Landlord shall not be liable to Tenant, nor shall Tenant
be entitled to exercise any other rights or remedies, for any injury to Tenant,
its agents, employees, contractors or invitees, or any other person or entity
claiming, by, through, or under Tenant for damage to Tenant's property or loss
to Tenant's business resulting from any cause, including, without limitation,
any (i) failure or interruption of any HVAC or other utility system or service;
(ii) governmental regulation, including a rationing or other control of utility
services or use of the Leased Premises; or (iii) penetration of water into or
onto any portion of the Leased Premises through roof leaks or otherwise.

     10.2.     Indemnification of Landlord.  Tenant shall not do or permit any
act or thing on or about the Leased Premises which may subject Landlord to any
liability or responsibility for injury, damages to persons or property or to any
liability by reason of any violation of Laws or of any legal requirement of any
public authority or Private Restrictions but shall exercise such control over
the Leased Premises as to fully protect Landlord against any such liability. 
Tenant shall hold harmless, indemnify and defend Landlord, and its employees,
agents and contractors, and any other person or entity claiming by, through or
under Landlord, from all liability, penalties, losses, damages, costs, expenses,
causes of action, claims and/or judgments (including reasonable attorneys' fee)
arising by reason of any death, bodily injury, personal injury or property
damage (i) resulting from any cause or causes whatsoever (other than the
negligence or willful misconduct of Landlord or Landlord's agents, employees or
contractors to the extent of Landlord's liability under Paragraph 10.1)
occurring in, on or about or resulting from an occurrence in, on or about the
Leased Premises during the Lease Term, or (ii) resulting from the acts or
omissions of Tenant, its agents, employees and contractors, (iii) resulting from
any failure by Tenant to perform and observe its covenants and obligations under
this Lease, or (iv) any other matter or thing arising from Tenant's occupancy or
use of, or any action or omission of, Tenant, its employees, agents,
contractors, invitees or visitors on, about, adjacent to, or relating to
activities at, or the use of the Leased Premises.  The provisions of this
Article shall survive the expiration or sooner termination of this Lease.



                                         -17-
<PAGE>

                                                                     LOT B

                                     ARTICLE XI

                             DAMAGE TO LEASED PREMISES

     11.1.     Duty To Restore.  If the Leased Premises are damaged by any
casualty after the Commencement Date, Tenant shall restore fully the Leased
Premises to substantially the same condition that existed prior to such
casualty.  All insurance proceeds shall be promptly made available to Tenant for
the payment of the repairs and restoration of such damage or casualty; provided
that such proceeds may be made available to Tenant subject to reasonable
conditions and customary construction loan disbursement procedures, including
provision by Tenant of an independent architect's certification of the cost of
such repair or restoration, together with plans and specifications therefor and
shall be deemed made available for such repair or restoration if they are made
available through and are disbursed under such reasonable conditions and
customary construction loan disbursement procedures.

     In the event of damage to or destruction of the Leased Premises which
results in Tenant's loss of use of the Leased Premises, or a portion thereof,
and the cost of repair and replacement is less than one million dollars
($1,000,000), as shall be established by Tenant to Landlord by written notice
accompanied by an independent architect's certification of cost, then if
insurance proceeds are not made available to Tenant for repair and restoration
within thirty (30) days from the date that any such proceeds shall have been
made available to Landlord or a Lender, and providing Tenant is not in default
under the Lease, Tenant may abate Base Annual Rent in the same proportion as the
rentable square footage rendered unusable by such damage or destruction bears to
the total rentable square footage of the Leased Premises; provided that Tenant
shall not be entitled to such Base Annual Rent abatement until ten (10) business
days following written notice by Tenant to Landlord and any Lender identified as
a named insured under the policy or policies of insurance on the Leased Premises
that such proceeds have not been made available to Tenant within such thirty
(30) day period and, following such notice, such proceeds are not made available
to Tenant within such ten (10) day period.  Base Annual Rent abatement shall
continue until all such insurance proceeds are made available to Tenant.

     In the event of damage to or destruction of the Leased Premises which
results in Tenant's loss of use of the Leased Premises, or a portion thereof,
and the cost of repair and replacement is more than one million dollars
($1,000,000), as shall be established by Tenant to Landlord by written notice
accompanied by an architect's certification of cost, then if insurance proceeds
are not made available to Tenant for repair and restoration within thirty (30)
days from the date that any such proceeds shall have been made available to
Landlord or a Lender, and providing Tenant is not in default under the Lease,
Tenant may terminate this Lease; provided that Tenant shall not be entitled to
terminate this Lease until ten (10) business days following written notice by
Tenant to Landlord and any Lender identified as a named insured under the policy
or policies of insurance on the Leased Premises that such 



                                         -18-
<PAGE>

                                                                     LOT B


proceeds have not been made available to Tenant within such thirty (30) day
period and, following such notice, such proceeds are not made available to
Tenant within such ten (10) day period.

     Unless Tenant is in default under this Lease or its not complying with
Tenant's obligations under Article IX, Tenant shall not be obligated to expend
any amount in excess of the amount of insurance deductibles plus insurance
proceeds made available for such restoration.  Upon the issuance of all
necessary governmental permits, Tenant shall commence and diligently prosecute
to completion the restoration of the Leased Premises, to the extent then allowed
by Laws, to substantially the same condition as that existing immediately prior
to such damage or destruction.

     11.2.     No Termination or Rent Abatement.  Damage to, or destruction of
all or any portion of the Leased Premises by fire or by any other cause shall
not, except as provided in Paragraph 11.1, give Tenant the right to terminate
this Lease nor entitle Tenant to surrender the Leased Premises, nor in any way
affect Tenant's obligation to pay the Base Annual Rent or Additional Rent, and,
except under certain specified, limited circumstances referred to in Paragraph
3.3, there shall be no abatement, diminution or reduction of Base Annual Rent or
Additional Rent payable under this Lease for any cause whatsoever.


                                    ARTICLE XII
                                          
                                    CONDEMNATION
                                          
     12.1.     Total Condemnation.  If all or Substantially All of the Leased
Premises are taken by Condemnation, this Lease shall terminate on the Date of
Taking.

     12.2.     Partial Condemnation.  If Less than Substantially All of the
Leased Premises is taken by Condemnation, this Lease shall terminate as to the
portion taken and otherwise remain in full force and effect, except that the
amount of Base Annual Rent due hereunder, from time to time, shall be reduced,
from and after the Date of Taking in the same proportion as the Award bears to
the Fair Market Value of the Leased Premises (including the real estate subject
to the Condemnation) on the Date of Taking (the "Paragraph 12.2 Value") as
determined by the condemning authority (the "Condemnor") and subject to a final
Award and final Paragraph 12.2 Value (after the exhaustion of all appeals if so
desired by Landlord or Tenant).  Landlord shall have no obligation to restore
the Leased Premises, or otherwise compensate Tenant (except through such Base
Annual Rent reduction), in the event of such partial Condemnation, provided
that, to the extent it can be determined or established that a portion of the
Award represents damages for repair and reconstruction of the remaining portion
of the Leased Premises following such Condemnation received by Landlord for such
Condemnation, Landlord shall promptly make available to Tenant such 



                                         -19-
<PAGE>

                                                                     LOT B


portion of the Award for use by Tenant in repairing or restoring the Leased
Premises.  Any portion of an Award shall be deemed made available for such
repair and restoration if it is made available through and disbursed under
reasonable disbursement conditions and customary construction loan disbursement
procedures.  If the Condemnor does not establish the Paragraph 12.2 Value, the
Paragraph 12.2 Value shall be determined by agreement between Landlord and
Tenant on or before thirty (30) days before the Date of Taking using, to the
extent possible, the same basis and assumptions as Condemnor used in the
calculation of the Award.  In the absence of such agreement as to Paragraph 12.2
Value, it shall be determined as follows:

          (a)  Each party shall appoint an Appraiser (hereinafter defined)
within ten (10) days after notice of failure to agree given by one party to the
other, and shall advise the other party of such appointment.  On the failure of
either party so to appoint an Appraiser, and to advise the other party of such
appointment, the person who has been appointed as Appraiser may appoint a second
Appraiser to represent the party in default.

          (b)  The two (2) Appraisers appointed in either manner shall then
proceed to establish the Paragraph 12.2 Value using, to the extent possible, the
same basis and assumptions as the Condemnor used in the calculation of the
Award.  In the event of their inability to agree upon the Paragraph 12.2 Value
within thirty (30) days after their appointment, then they shall appoint a third
Appraiser, provided however, that if the difference between the amounts
respectively determined by the two (2) Appraisers is not greater than an amount
equal to ten percent (10%) of the higher of the two (2) amounts so determined,
then the Paragraph 12.2 Value shall be the mean of such two amounts, and it
shall not be necessary to appoint a third (3rd) Appraiser.  In the event that a
third (3rd) Appraiser is not appointed within fifteen (15) days after the
expiration of the thirty (30) day period referenced to in the first sentence of
this Subparagraph 12.2(b), then, in such event, the chief executive officer of
the Philadelphia Chapter of the American Institute of the Appraisers shall
appoint the third Appraiser.

          (c)  In the event a third Appraiser is appointed, such Appraiser's
determination of Paragraph 12.2 Value shall be final so long as it is within the
limits of the appraisals established by the Appraisers appointed by the parties
pursuant to Subparagraph 12.2(a) above.  If the third Appraiser's appraisal is
not within such limits, the determination of Paragraph 12.2 Value made by an
Appraiser appointed pursuant to Subparagraph 12.2(a) above which is the closest
to that of the third Appraiser shall control.

          (d)  As used in this Lease, "Appraiser" shall mean an independent
M.A.I. appraiser who has at least ten (10) years, experience in appraising
commercial real estate in the Philadelphia, Pennsylvania area.  Neither party
shall be precluded from appointing an independent Appraiser whom such party had
previously employed as an independent 


                                         -20-
<PAGE>

                                                                     LOT B

Appraiser; except that the third Appraiser, if appointed, may not have been
previously employed by either party.

          (e)  Landlord and Tenant shall divide equally the charges of
Appraisers selected under this Paragraph 12.2.

     12.3.     Temporary Taking.  If all or Substantially All of the Leased
Premises is temporarily taken by Condemnation for a period which either exceeds
one (1) year or which extends beyond the expiration of the Leased Term, then
Landlord and Tenant shall each independently have the option to terminate this
Lease, effective on the date possession is taken by the Condemnor.

     12.4.     Division of Condemnation Awards.  Any Awards made as a result of
any Condemnation of the Leased Premises shall belong to and be paid to Landlord,
and Tenant hereby assigns to Landlord all of its right, title and interest in
any such Award; provided, however, that Tenant shall be entitled to receive any
Award that is made expressly (i) for the taking of Trade Fixtures, (ii) for the
interruption of Tenant's business or its moving costs, (iii) for any temporary
taking where this Lease is not terminated as a result of such taking and/or (iv)
as provided in Paragraph 12.2 regarding damages for repair and reconstruction of
the remaining portion of the Leased Premises following such Condemnation. the
rights of Landlord and Tenant regarding any Condemnation shall be determined as
provided in this Article, and each party hereby waives the provisions of any
Laws allowing either party to petition a court to terminate this Lease in the
event of a partial taking of the Leased Premises.

     12.5.     Other Condemnation Provisions.  If this Lease is not terminated
pursuant to Article XII, Tenant shall repair any damage caused by such
condemnation so as to restore the remaining portion of the Leased Premises as
nearly as practicable to the condition thereof immediately prior to such
Condemnation to the extent that Tenant receives an Award resulting from the
Condemnation sufficient to make such repair and restoration.


                                    ARTICLE XIII

                                DEFAULT AND REMEDIES

     13.1.     Events of Default.  Tenant shall be in default of its obligations
under this Lease if any of the following events shall occur:

          (a)  Tenant shall have failed to pay Base Annual Rent or Additional
Rent on the dates due under this Lease; provided that (i) Landlord shall give
Tenant notice of such failure and fifteen (15) days to cure such failure and
(ii) following such fifteen (15) day 


                                         -21-
<PAGE>

                                                                     LOT B

period if Tenant shall still have failed to pay such Base Annual Rent or
Additional Rent, Landlord shall give Tenant a second notice of such failure and
an additional fifteen (15) days to cure such failure before Tenant shall be in
default hereunder; or

          (b)  Tenant shall have failed to perform (i) any term, covenant, or
condition of this Lease except those requiring the payment of Base Annual Rent
or Additional Rent or (ii) any term, covenant or condition of the Environmental
Indemnity, and, in the case of either (i) or (ii) of this Subparagraph 13.1(b),
Tenant shall have failed to cure such failure within thirty (30) days after
written notice from Landlord specifying the nature of such breach; provided that
if any such breach cannot reasonably be cured within such thirty (30) day period
then Tenant shall have a reasonable period to cure such breach, so long as
Tenant commences to cure the breach within such thirty (30) day period and
thereafter diligently, in good faith and using reasonable efforts, pursues such
cure to completion, except that Tenant shall not under any circumstances have
more than thirty (30) days following such written notice to cure any monetary
default under the Environmental Indemnity; or

          (c)  Tenant shall have made a general assignment of its assets for the
benefit of its creditors; or

          (d)  Tenant shall have assigned its interest in this Lease in
violation of the provisions contained in Article XIV, whether voluntarily or by
operation of law; or

          (e)  Tenant shall have permitted the sequestration or attachment of,
or execution on, or the appointment of a custodian or receiver with respect to,
all or substantially all of the property of Tenant and Tenant shall have failed
to obtain a return or release of such property within thirty (30) days
thereafter, or prior to sale pursuant to such
sequestration, attachment or levy, whichever is earlier; or

          (f)  A court shall have made or entered any decree or order with
respect to Tenant or Tenant shall have submitted to or sought a decree or order
(or a petition or pleading shall have been filed in connection therewith) which:
(i) grants or constitutes (or seeks) an order for relief, appointment of a
trustee, or confirmation of a reorganization plan under the bankruptcy laws of
the United States; (ii) approves as properly filed (or seeks such approval of) a
petition seeking liquidation or reorganization under said bankruptcy laws or any
other debtor's relief law or statute of the United States or any state thereof;
or (iii) otherwise directs (or seeks) the winding up or liquidation of Tenant;
and such petition, decree or order shall have continued in effect for a period
of thirty (30) or more days.

          (g)  So long as the Landlord under this Lease and under the Lease of
even date herewith between Landlord and Tenant with respect to Lot A shown on
the Subdivision Plan (the "Lot A Lease") are the same entity or person, Tenant
under the Lot A Lease shall have defaulted under the Lot A Lease.


                                         -22-
<PAGE>

                                                                          LOT B

          (h)  So long as the Landlord under this Lease and under the Lease 
of even date herewith between Landlord and Tenant with respect to Lot C shown 
on the Subdivision Plan (the "Lot C Lease") are the same entity or person, 
Tenant under the Lot C Lease shall have defaulted under the Lot C Lease.

     13.2.     Landlord's Remedies.  In the event of any default by Tenant, 
Landlord shall have the following remedies, in addition to all other rights 
and remedies provided by any Laws or otherwise provided in this Lease, or 
otherwise available to Landlord, to which Landlord may resort cumulatively, 
or in the alternative:

          (a)  Landlord may, at Landlord's option, terminate this Lease, by 
written notice of termination specifying the date of termination of this 
Lease on which date this Lease shall terminate, and take and retain 
possession of the Leased Premises by any means legally available to Landlord, 
including summary dispossess proceedings.  To the extent required by 
applicable Laws, Landlord shall attempt to relet all or any part of the 
Leased Premises in any manner, for any term, for such rent and upon terms 
reasonably satisfactory to Landlord, and if applicable Laws do not require 
Landlord to attempt to so relet, Landlord shall use commercially reasonable 
efforts, accepted in the industrial/commercial real estate industry in the 
suburban counties contiguous to Philadelphia, Pennsylvania, for real estate 
of the type and condition of the Leased Premises, to relet all or any part of 
the Leased Premises in any manner, for any term, for such rent and upon terms 
reasonably acceptable to Landlord.  Landlord may make any repairs, changes, 
additions or alterations in or to the Leased Premises that may be necessary 
for such reletting, taking into account the character and then current use of 
the Leased Premises.  If the Leased Premises are relet, Tenant shall be 
liable to Landlord for the Present Value (determined at the time of 
Landlord's demand) of the difference between the amount of Base Annual Rent, 
Additional Rent, and all other amounts payable hereunder and the net proceeds 
of any such reletting (net of all reasonable expenses, including without 
limitation, repairs or construction costs and leasing commissions relating to 
such reletting), and Tenant shall pay to Landlord the Present Value of such 
difference immediately upon demand by Landlord.  Any termination under this 
Subparagraph 13.2(a) shall not relieve Tenant from the payment of any sums 
then due Landlord or from any claim against Tenant for damages or Rent 
accrued and then accruing.  In no event shall any act or omission by 
Landlord, in the absence of a written election by Landlord to terminate this 
Lease, constitute a termination of this Lease, including, without limitation:

               (i)  Appointment of a receiver or keeper in order to protect 
Landlord's interest hereunder;

               (ii) Consent or refusal to consent to any assignment of this 
Lease by Tenant, whether pursuant to the provisions hereof or otherwise; or


                                         -23-

<PAGE>

                                                                          LOT B

               (iii)     Any other action by Landlord or Landlord's agents 
intended to mitigate the adverse effects of any breach of this Lease by 
Tenant, including without limitation any action taken to maintain and 
preserve the Leased Premises or any action taken to relet the Leased Premises 
or any portions thereof, for the account of Tenant and in the name of Tenant.

          (b)  Landlord may, at Landlord's option, with or without 
terminating this Lease, take and retain possession of the Leased Premises by 
any means legally available to Landlord, including summary dispossess 
proceedings.  If Landlord elects to terminate Tenant's right to possession 
only, without terminating this Lease, Landlord may, following taking 
possession of the Leased Premises in accordance herewith, remove Tenant's 
signs and other evidences of tenancy, without such entry and possession 
terminating the Lease or releasing Tenant, in whole or in part, from Tenant's 
obligations to pay Rent hereunder for the Lease Term or for any other of 
Tenant's obligations under this Lease.  To the extent required by applicable 
Laws, Landlord shall attempt to relet all or any part of the Leased Premises 
in any manner, for any term, for such rent and upon terms reasonably 
satisfactory to Landlord, and if applicable Laws do not require Landlord to 
attempt to so relet, Landlord shall use commercially reasonable efforts, 
accepted in the industrial/commercial real estate industry in the suburban 
counties contiguous to Philadelphia, Pennsylvania, for real estate of the 
type and condition of the Leased Premises, to relet all or any part of the 
Leased Premises in any manner, for any term, for such rent and upon terms 
reasonably acceptable to Landlord.  Landlord may make any repairs, changes, 
alterations or additions in or to the Leased Premises that may be necessary 
for such reletting, taking into account the character and then current use of 
the Leased Premises.  If Landlord is unable to relet the Leased Premises, 
Tenant will pay Landlord on demand all amounts due from Tenant to Landlord 
under this Lease for the remainder of the Lease Term.  If the Leased Premises 
are relet, Tenant shall be liable to Landlord for the Present Value 
(determined at the time of Landlord's demand) of the difference between the 
amount of Base Annual Rent, Additional Rent, and all other amounts payable 
hereunder and the net proceeds of any such reletting (net of all reasonable 
expenses, including without limitation, repairs or construction costs and 
leasing commissions relating to such reletting), and Tenant shall pay to 
Landlord the Present Value of such difference immediately upon demand by 
Landlord.

          (c)  Landlord may, at Landlord's election, keep this Lease in 
effect and enforce all of its rights and remedies under this Lease, including 
(i) the right to recover the Base Annual Rent and Additional Rent and other 
sums as they become due by appropriate legal action, and (ii) the right to 
invoke the remedies of injunctive relief and specific performance to compel 
Tenant to perform its obligations under this Lease.

          (d)  If Tenant is in default under this Lease and abandons or 
vacates the Leased Premises, this Lease shall not terminate unless Landlord 
gives Tenant written notice of its election to so terminate this Lease.  No 
act by or on behalf of Landlord intended to 


                                         -24-

<PAGE>
                                                                          LOT B

mitigate the adverse effect of such breach, including, without limitation, 
those described by Subparagraphs 13.2(a)(i), (ii) and (iii), shall constitute 
a termination of Tenant's right to possession unless Landlord gives Tenant 
written notice of termination.  Should Landlord not terminate this Lease by 
giving Tenant written notice, Landlord may enforce all its rights and 
remedies under this Lease, including the recovery of Rent as it becomes due 
and payable under this Lease.

          (e)  If Landlord terminates this Lease, Landlord, in addition to 
all other rights and remedies available to Landlord in the event of Tenant's 
default, but subject to the provisions of the second sentence of Subparagraph 
13.2(a), shall be entitled, at Landlord's election, to damages as provided 
under applicable Laws or as set forth in Subparagraph 13.2(e)(i) and (ii).  
For purposes of computing such damages (i) an interest rate of Prime plus six 
percent (6%) per annum, but in no event less than thirteen and one half 
percent (13.5%) per annum, shall be used where permitted, and (ii) Rent due 
under this Lease shall include Base Annual Rent, Additional Rent and all 
other amounts payable by Tenant under this Lease, prorated on a monthly basis 
where necessary to compute such damages.  Such damages shall include, without 
limitation:

               (i)  The worth of the amount by which the Rent for the balance 
of the Lease Term after the time of termination exceeds the fair rental value 
of the Leased Premises for the balance of the Lease Term as reasonably 
estimated solely by Landlord, such worth shall be the Present Value of the 
amount determined pursuant to the preceding clause, computed by discounting 
such amount at Thirty-day LIBOR at the time of judgment; and

               (ii) Any other amount necessary to compensate Landlord for all 
detriment caused by Tenant's failure to perform Tenant's obligations under 
this Lease or for expenses incurred by Landlord in performing Tenant's 
obligations under this Lease, or which in the ordinary course of things would 
be likely to result therefrom, including, without limitation, the following:  
(a) expenses for cleaning, repairing or restoring the Leased Premises; (b) 
expenses for repairing the Leased Premises for the purpose of reletting, 
including installation of leasehold improvements (whether such installation 
be funded by a reduction of rent, direct payment or allowance to a new 
tenant, or otherwise); (c) broker's fees, advertising costs and other 
expenses of reletting the Leased Premises; (d) costs of carrying the Leased 
Premises, such as taxes, insurance premiums, utilities and security 
precautions; (e) expenses in retaking possession of the Leased Premises; (f) 
attorneys' fees and court costs incurred by Landlord in retaking possession 
of the Leased Premises and in reletting the Leased Premises; and (g) the 
portion of any brokerage commission paid by Landlord in procuring this Lease 
attributable to the remaining balance of the Lease Term.

          (f)  Subject to Landlord's compliance with the requirements of the 
Trust Agreement, Landlord may, at Landlord's option, exercise Landlord's 
rights and remedies under the Trust Agreement.


                                         -25-

<PAGE>
                                                                          LOT B

          (g)  Landlord may exercise any other legal or equitable right or 
remedy which Landlord may have.

          (h)  Nothing in this Paragraph shall limit Landlord's rights to 
indemnification from Tenant as provided in this Lease.

     13.3.     Landlord's Right to Cure.  All covenants and agreements to be 
kept or performed by Tenant under any of the terms of this Lease shall be 
performed by Tenant at Tenant's sole cost and expense and without any 
abatement of Rent (except to the extent referred to in Paragraph 3.3 of this 
Lease).  If Tenant shall fail to pay any sum of money required to be paid by 
it hereunder or shall fail to perform any other act on its part to be 
performed hereunder following any notice and cure period required under 
Subparagraph 13.1(a) or 13.1(b) (whether such payment or performance is due 
to or in favor of Landlord or any third party), Landlord may, but shall not 
be obliged to, and without waiving any default of Tenant or releasing Tenant 
from any obligations to Landlord hereunder, make any such payment or perform 
any such other act on Tenant's part to be made or performed as in this Lease 
provided (including but not limited to Tenant's obligations pursuant to 
Paragraphs 4.2, 6.1 and 6.2 hereof).  All sums so paid by Landlord and all 
necessary incidental costs, together with interest thereon at the rate of 
Prime plus six percent (6%) per annum, but in no event less than thirteen and 
one half percent (13.5%) per annum, from the date of such payment by 
Landlord, shall be paid to Landlord forthwith on demand, as Additional Rent, 
and Landlord shall have (in addition to any other right or remedy of 
Landlord) the same rights and remedies (including, but not limited to, 
Landlord's remedies under Paragraph 13.2 hereof) in the event of nonpayment 
thereof by Tenant as in the case of default by Tenant in the payment of Rent.

     13.4.     CONFESSION OF JUDGMENT IN EJECTMENT.  AFTER AT LEAST TEN (10) 
DAYS' PRIOR WRITTEN NOTICE FROM LANDLORD OF LANDLORD'S INTENTION TO CONFESS 
JUDGMENT IN EJECTMENT, INCLUDING COPIES OF PLEADINGS TO BE FILED IN ANY SUCH 
EJECTMENT ACTION, TENANT, FULLY COMPREHENDING THE RELINQUISHMENT OF CERTAIN 
RIGHTS INCLUDING, WITHOUT LIMITATION, RIGHTS OF PREJUDGMENT NOTICE AND 
HEARING AND POST-JUDGMENT NOTICE AND HEARING BEFORE EXECUTION, AUTHORIZES AND 
EMPOWERS ANY ATTORNEY OF ANY COURT OF RECORD WITHIN THE UNITED STATES, TO 
APPEAR FOR TENANT, AND FOR ANY OTHER PERSON CLAIMING UNDER, BY OR THROUGH 
TENANT, AND CONFESS JUDGMENT IN EJECTMENT FORTHWITH AGAINST TENANT AND SUCH 
OTHER PERSON AND IN FAVOR OF LANDLORD, ITS SUCCESSORS AND ASSIGNS, FOR 
POSSESSION OF THE LEASED PREMISES, TOGETHER WITH HEREDITAMENTS AND 
APPURTENANCES AND ALL FIXTURES AND EQUIPMENT INSTALLED THEREIN, WITH RELEASE 
OF ALL ERRORS, WAIVER OF STAY OF EXECUTION, AND WAIVER OF EXEMPTION BY 


                                         -26-

<PAGE>
                                                                          LOT B

TENANT.  NO SINGLE EXERCISE OF THE FOREGOING WARRANTS AND POWERS OF ATTORNEY 
SHALL HAVE BEEN DEEMED TO EXHAUST SUCH WARRANTS AND POWERS, WHETHER OR NOT 
SUCH EXERCISE SHALL BE HELD BY ANY COURT TO BE INVALID, VOIDABLE OR VOID, BY 
THE WARRANTS AND POWERS SHALL CONTINUE UNDIMINISHED AND MAY BE EXERCISED FROM 
TIME TO TIME AS OFTEN AS LANDLORD, OR ITS SUCCESSORS AND ASSIGNS SHALL ELECT 
UPON THE OCCURRENCE OF A DEFAULT UNDER THIS LEASE.  TENANT CONFIRMS THAT THIS 
IS A COMMERCIAL LEASE, THAT TENANT WAS REPRESENTED BY COUNSEL IN TENANT'S 
NEGOTIATION AND EXECUTION OF THIS LEASE, AND THAT TENANT FREELY AND 
VOLUNTARILY EXECUTED THIS LEASE WITH THIS PARAGRAPH 13.4 AS A PART THEREOF.

     13.5.     Waiver.

          (a)  No right or remedy herein conferred upon or reserved to 
Landlord is intended to be exclusive of any other right or remedy, and every 
right and remedy shall be cumulative and in addition to any other right or 
remedy given hereunder or now or hereafter existing at law or equity.  The 
failure of Landlord to insist upon the strict performance of any covenant or 
agreement or to exercise any option, right, power or remedy contained in this 
Lease shall not be construed as a waiver or relinquishment thereof for the 
future.  The receipt by Landlord of any Rent, with knowledge of the breach, 
shall not constitute a waiver or cure of such breach or prevent Landlord from 
exercising any of its rights or remedies hereunder on account of Tenant's 
breach.  Landlord shall be entitled to injunctive relief in case of the 
violation, or attempted or threatened violation, of any covenant, agreement, 
condition or provision of this Lease, or to a decree compelling performance 
of any covenant, agreement, condition or provision of this Lease, or to any 
other remedy allowed by law.  If on account of any breach or default by 
Tenant under the terms of this Lease, Landlord consults or employs an 
attorney or attorneys concerning Tenant's possible default under this Lease 
or to enforce or defend any of the Landlord's rights or remedies under this 
Lease, Tenant agrees to pay, on demand, as Rent, all reasonable attorneys, 
fees and costs so incurred.

          (b)  Tenant hereby waives any notice of termination or intention to 
reenter provided for in any statute, or of the institution of legal 
proceedings for that purpose, and in addition waives any right of redemption 
or reentry or repossession, or to restore the operation of this Lease if it 
is terminated or if Tenant is dispossessed by any judgment or by warrant of 
any court or judge in the cases of reentry or repossession by Landlord, or in 
the case of expiration of the Lease Term.  Tenant, in addition, waives any 
and all benefits of any and all laws now or hereafter in force or effect 
exempting property of Tenant from liability for rent or for debt.  Tenant 
also expressly waives:


                                         -27-

<PAGE>
                                                                          LOT B

               (i)  The benefit of all Laws, now or hereafter in force, 
exempting any goods on the Leased Premises, or elsewhere, from levy or sale 
in any legal proceedings taken by Landlord to enforce any rights under this 
Lease;

               (ii) The right to delay execution on any real estate that may 
be levied upon to collect any amount which may become due under the terms and 
conditions of this Lease and any right to have the same appraised;

               (iii)     Any and all rights of redemption granted by or under 
any present or future laws in the event of Tenant being evicted or 
dispossessed for any cause, or in the event of Landlord obtaining possession 
of the Leased Premises, by reason of the violation by Tenant of any of the 
covenants or conditions of this Lease, or otherwise; and

               (iv) The right, if any, to three months notice and/or fifteen 
(15) or thirty (30) days' notice under the Landlord and Tenant Act of 1951, 
as amended.

          (c)  (i)  At the sole option of Landlord to be exercised only by 
written notice to Tenant at any time and from time to time, Landlord may 
elect to eliminate from this Lease, permanently or temporarily, Subparagraph 
13.1(g) or Subparagraph 13.1(h), or both of them.

               (ii) At the sole option of Landlord to be exercised only by 
written notice to Tenant at any time and from time to time, Landlord may 
elect to eliminate from this Lease, permanently or temporarily, Subparagraph 
13.2(f) and all other references to the Trust Agreement.

     13.6.     Late Charge.  In the event any amount of Base Annual Rent or 
Additional Rent shall remain unpaid for five (5) calendar days after such 
amount becomes due, Tenant shall pay Landlord, without notice or demand, a 
late charge equal to two percent (2%) of such overdue amount to partially 
compensate Landlord for its administrative costs in connection with such 
overdue payment; which administrative costs Tenant expressly acknowledges are 
reasonable and do not constitute a penalty.

     13.7.     Bankruptcy or Insolvency.

          (a)  In the event that Tenant shall become a Debtor under Chapter 7 
of the Bankruptcy Code (hereinafter defined), and the Trustee or Tenant shall 
elect to assume this Lease for the purpose of assigning the same or 
otherwise, such election and assignment may only be made if all of the terms 
and conditions of Subparagraph 13.7(b) and Subparagraph 13.7(d) are 
satisfied.  If such Trustee shall fail to elect or assume this Lease within 
sixty (60) days after the filing of the petition or such later date as shall 
be approved by the Bankruptcy Court, not to exceed ninety (90) days, this 
Lease shall be deemed to have been rejected.  


                                         -28-

<PAGE>
                                                                          LOT B

Landlord shall be thereupon immediately entitled to possession of the Leased 
Premises without further obligation to Tenant or Trustee, and this Lease 
shall be cancelled, but Landlord's right to be compensated for damages in 
such liquidation proceeding shall survive.

          (b)  In the event that a petition for reorganization or adjudgment 
of debts is filed concerning Tenant under Chapters 11 or 13 of the Bankruptcy 
Code, or a proceeding is filed under Chapter 7 of the Bankruptcy Code and is 
transferred to Chapters 11 or 13, the Trustee or Tenant, as 
Debtor-In-Possession, must elect to assume this Lease within sixty (60) days 
from the date of the filing of the petition under Chapters 11 or 13 or such 
later date as shall be approved by the Bankruptcy Court, not to exceed ninety 
(90) days, or the Trustee or Debtor-In-Possession shall be deemed to have 
rejected this Lease.  No election by the Trustee or Debtor-In-Possession to 
assume this Lease whether under Chapter 7, 11, or 13, shall be effective 
unless each of the following conditions, which Landlord and Tenant 
acknowledge are commercially reasonable in the context of a bankruptcy 
proceeding of Tenant, have been satisfied, and Landlord has so acknowledged 
in writing:

               (i)  The Trustee or the Debtor-In-Possession has cured, or has 
provided Landlord adequate assurance (as defined in Subparagraph 13.7(b)(v) 
below) that:

                    (A)  Within ten (10) days from the date of such 
assumption the Trustee or Debtor in Possession will cure all monetary 
defaults under this Lease; and

                    (B)  Within thirty (30) days from the date of such 
assumption the Trustee or Debtor in Possession will cure all non-monetary 
defaults under this Lease.

               (ii) The Trustee or the Debtor-In-Possession has compensated, 
or has provided to Landlord adequate assurance (as defined below) that, 
within ten (10) days from the date of assumption, Landlord will be 
compensated for any pecuniary loss incurred by Landlord arising from the 
default of Tenant, the Trustee, or the Debtor-In-Possession as recited in 
Landlord's written statement of pecuniary loss sent to the Trustee or 
Debtor-In-Possession.

               (iii)     The Trustee or the Debtor-In-Possession has provided 
Landlord with adequate assurance of the future performance of each of 
Tenant's, Trustee's or Debtor-In-Possession obligations under this Lease; 
provided, however, that:

                    (A)  If not otherwise deposited with Landlord, the 
Trustee or Debtor-In-Possession shall also deposit with Landlord, as security 
for the timely payment of Rent, an amount at least equal to a quarterly 
installment of Base Annual Rent (as well as the payments described in 
Subparagraph 13.7(b)(iii)(C) below) and other monetary charges accruing under 
this Lease;


                                         -29-

<PAGE>
                                                                          LOT B



                    (B)  If not otherwise required by the terms of this 
Lease, the Trustee or Debtor-In-Possession shall also pay in advance on the 
date Base Annual Rent is payable one quarter (1/4) of Tenant's annual 
obligations under this Lease for Real Property Taxes, insurance and similar 
charges;

                    (C)  From and after the date of the assumption of this 
Lease, the Trustee or Debtor-In-Possession shall pay all Base Annual Rent, 
Additional Rent, and other amounts payable by Tenant as they become due under 
this Lease; and

                    (D)  The obligations imposed upon the Trustee or 
Debtor-In-Possession shall continue with respect to Tenant or any assignee of 
this Lease after the completion of bankruptcy proceedings.

               (iv) The assumption of the Lease will not breach any provision 
in any other lease, mortgage, financing agreement or other agreement by which 
Landlord is bound relating to the Leased Premises.

               (v)  For purposes of this Subparagraph 13.7(b), Landlord and 
Tenant acknowledge that, in the context of a bankruptcy proceeding of Tenant, 
at a minimum adequate assurance, shall mean:

                         (1)  The Trustee or the Debtor-In-Possession has and 
will continue to have sufficient unencumbered assets after the payment of all 
secured obligations and administrative expenses to assure Landlord that the 
Trustee or Debtor-In-Possession will have sufficient funds to fulfill the 
obligations of Tenant under this Lease, and to keep the Leased Premises 
properly staffed with sufficient employees to conduct a fully-operational, 
active business on the Leased Premises; and

                         (2)  If defaults referred to in Paragraph 
13.7(b)(i)(a)(B) above are not cured within the time periods set forth 
therein, the Bankruptcy Court shall have entered an order segregating 
sufficient cash payable to Landlord or the Trustee or Debtor-In-Possession 
shall have granted a valid and perfected first lien and security interest or 
mortgage in property of Tenant, Trustee or Debtor-In-Possession, or a 
combination of such cash, perfected first liens, security interests or 
mortgages, acceptable as to value and kind to Landlord, to secure to Landlord 
the obligation of the Trustee or Debtor-In-Possession to cure the monetary 
and/or non-monetary defaults under this Lease.

          (c)  In the event that this Lease is assumed by a Trustee appointed 
for Tenant or by Tenant as Debtor-In-Possession under the provisions of 
Subparagraph 13.7(b) hereof and thereafter Tenant is liquidated or files a 
subsequent Petition for reorganization or adjustment of debts under Chapters 
11 or 13 of the Bankruptcy Code, then, and in either of such events, Landlord 
may, at its option, terminate this Lease and all rights of Tenant 


                                         -30-

<PAGE>

                                                             LOT B

hereunder, by giving Tenant written notice of its election to so terminate, 
by no later than thirty (30) days after the occurrence of either of such 
events.

          (d)  If the Trustee or Debtor-In-Possession has assumed this Lease 
pursuant to the terms and provisions of Subparagraph 13.7(a) or (b) herein, 
for the purpose of assigning (or elects to assign) Tenant's interest under 
this Lease or the estate created thereby, to any other person, such interest 
or estate may be so assigned only if Landlord shall acknowledge in writing 
that the intended assignee has provided adequate assurance of all of the 
terms, covenants and conditions of this Lease to be performed by Tenant.  For 
purposes of this Subparagraph 13.7(d), Landlord and Tenant acknowledge that, 
in the context of a bankruptcy proceeding of Tenant, at a minimum adequate 
assurance of future performance' shall mean that each of the following 
conditions have been satisfied, and Landlord has not acknowledged in writing:

               (i)  The assignee has submitted a current financial statement 
audited by an independent certified public accountant which shows a net worth 
and working capital in amounts determined to be sufficient by Landlord to 
assure the future performance by such assignee of Tenant's obligations under 
this Lease;

               (ii) The assignee, if requested by Landlord, shall have 
obtained guarantees in form and substance reasonably satisfactory to Landlord 
from one or more persons who satisfy Landlord's standards of 
creditworthiness; and

               (iii)     Landlord has obtain all consents or waivers from any 
third party required under any lease, mortgage, financial arrangement or 
other agreement by which Landlord is bound to permit Landlord to consent to 
such assignment.

          (e)  When, pursuant to the Bankruptcy Code, the Trustee or 
Debtor-In-Possession shall be obligated to pay reasonable use and occupancy 
charges for the use of the Leased Premises or any portion thereof, such 
charges shall not be less than the Base Annual Rent, Additional Rent and 
other amounts payable by Tenant under this Lease.

          (f)  Neither Tenant's interest in this Lease, nor any lesser 
interest of Tenant herein, nor any estate of Tenant hereby created, shall 
pass to any trustee, receiver, assignee for the benefit of creditors, or any 
other person or entity, or otherwise by operation of law under the laws of 
any state having jurisdiction of the person or property of Tenant unless 
Landlord shall consent to such transfer in writing.  No acceptance by 
Landlord of rent or any other payments from any such trustee, receiver, 
assignee, person or other entity shall be deemed to have waived, nor shall it 
waive the need to obtain Landlord's consent of Landlord's right to terminate 
this Lease for any transfer of Tenant's interest under this Lease without 
such consent.


                                         -31-

<PAGE>
                                                                          LOT B

          (g)  As used in this Article XIII, 'Bankruptcy Code" shall mean the 
Bankruptcy Code of the United States of America, as amended from time to 
time. Capitalized terms used in this Article XIII and not defined elsewhere 
in this Lease shall have the meanings given to such terms in the Bankruptcy 
Code.  If the Bankruptcy Code imposes shorter periods of time on actions or 
decisions by Tenant, Trustees or Debtors-In-Possession than are imposed by 
this Article XIII or imposes more stringent requirements on Tenant, Trustees, 
or Debtors-In-Possession than are imposed by this Article XIII, such shorter 
periods of time and more stringent requirements shall be applicable under 
this Article XIII.  Nothing in this Subparagraph 13.7 shall limit Landlord's 
rights and remedies otherwise set forth in this Lease.

                                    ARTICLE XIV

                             ASSIGNMENT AND SUBLETTING

     14.1.     Assignment and Subletting By Tenant.  The following provisions 
shall apply to any assignment or subletting by Tenant:

          (a)  Tenant shall not assign or encumber its interest in this 
Lease, whether voluntarily or by operation of law without Landlord's prior 
written consent.  Any attempted assignment or encumbrance without Landlord's 
prior written consent shall be voidable and, at Landlord's election, shall 
constitute a default by Tenant hereunder.  Tenant shall have the right to 
sublease the Leased Premises, or any portion thereof, without Landlord's 
consent and shall provide Landlord notice of the identity of a sublessee 
following any such subletting.

          (b)  Tenant agrees to reimburse Landlord for all reasonable costs 
and attorneys' fees incurred by Landlord in conjunction with the processing 
and documentation of any assignment, transfer, change of ownership or 
hypothecation of the Leased Premises or Tenant's interest in this Lease.  No 
assignment, subletting, transfer, change of ownership or hypothecation shall 
be effective until (i) Tenant shall have paid such costs and fees (except as 
to subletting); (ii) each such assignee or transferee (excluding a subtenant) 
shall have agreed in writing for the benefit of Landlord to assume, to be 
bound by, and to perform the obligations of this Lease to be performed by 
Tenant, and (iii) an executed copy of such sublease, assignment, encumbrance, 
or other agreement of transfer shall have been delivered to Landlord.

          (c)  Consent by Landlord to one or more assignments or encumbrances 
of this Lease shall not be deemed to be a consent to any subsequent 
assignment or encumbrance.


                                         -32-

<PAGE>

          (d)  No subletting or assignment, even with the consent of 
Landlord, shall relieve Tenant of its personal and primary obligation to pay 
Rent and to perform all of the other obligations to be performed by Tenant 
hereunder.  The acceptance of Rent by Landlord from any person shall not be 
deemed to be a waiver by Landlord of any provision of this Lease or to be a 
consent to any assignment.

          (e)  Subject to Subparagraph 14.1(a) above, if Tenant is a 
corporation, any dissolution or sale of all or substantially all of its 
assets, merger, consolidation or other reorganization of Tenant, shall be 
deemed a voluntary assignment of Tenant's interest in this Lease.  If Tenant 
is a partnership, a withdrawal or change, voluntary, involuntary or by 
operation of law, of any general partner, or the dissolution of the 
partnership, shall be deemed a voluntary assignment.  Notwithstanding the 
foregoing provisions of this Subparagraph 14.1(e) to the contrary and subject 
to Tenant's compliance with the other provisions of this Article XIV, and to 
the condition that Tenant is not in default under this Lease at the time of 
such events, without it being deemed an assignment or encumbrance hereunder 
requiring Landlord's consent, (i) Tenant shall be permitted to effect a 
corporate merger, consolidation or reorganization, provided, however, that 
Unisys Corporation remains the Tenant under this Lease or (ii) if Unisys 
Corporation would not continue to be the Tenant by operation of law, any such 
merger, consolidation or reorganization is effected in accordance with 
applicable statutory provisions for merger, consolidation or reorganization 
of corporations, which provide that the liabilities of the corporation 
participating in such merger or consolidation are assumed by the corporation 
surviving such merger or consolidation.

     14.2.     Assignment By Landlord.  Landlord and its successors in 
interest shall have the right to transfer their interest in the Leased 
Premises and this Lease at any time and to any person or entity.  In the 
event of any conveyance of the Leased Premises and assignment by Landlord of 
this Lease to another, the Landlord originally named herein (and in the case 
of any subsequent transfer, the transferor), from the date of such transfer, 
(i) shall be automatically relieved, without any further act by any person or 
entity, of all liability for the performance of the obligations of the 
Landlord hereunder which may accrue after the date of such transfer, and (ii) 
shall be relieved of all liability for the performance of the obligations of 
the Landlord hereunder which have accrued before the date of transfer if its 
transferee agrees to assume and perform all such obligations of the Landlord 
hereunder and such transferee is not substantially less solvent than 
Landlord.  In the event the Landlord's interest in the Leased Premises is 
transferred to multiple transferees, such transferees shall designate, by a 
written notice to Tenant delivered upon such transfer, the name and address 
of a single person to whom all Rent and notices to be paid or given by Tenant 
hereunder shall be addressed and who shall be the sole authorized party to 
give notices to Tenant hereunder; Tenant's payment of Rent to such designated 
person shall satisfy Tenant's obligation to pay Rent to Landlord; Tenant's 
delivery of notices to such designated person shall constitute notice to 
Landlord and Tenant may rely upon notices from such designated person as 
being 


                                         -33-

<PAGE>
                                                                          LOT B

notice from Landlord.  After the date of such transfer, the term Landlord as 
used herein shall mean the transferee of such interest in the Leased Premises.

                                     ARTICLE XV
                                          
                                    TERMINATION
                                          
     15.1.     Surrender of the Leased Premises.

          (a)  Immediately prior to the expiration of the Lease Term, or upon 
the earlier termination of this Lease, Tenant shall remove all Trade Fixtures 
(except surveillance cameras exterior to the buildings which shall remain 
with the Leased Premises) and repair any damage caused by such removal and 
vacate and surrender the Leased Premises to Landlord in the condition 
required by the terms of this Lease.  Without limiting the generality of the 
foregoing, Tenant shall surrender the Leased Premises (normal wear and tear 
excepted), in broom clean condition, with all interior walls cleaned, all 
trash, waste, and debris removed, all carpets cleaned, all HVAC equipment 
within the Leased Premises in operating order and in good repair, and all 
floors cleaned, all to the reasonable satisfaction of Landlord.  In the event 
there has been an event of damage or destruction governed by Article XI, or 
Condemnation affecting the Leased Premises, and Tenant has been complying 
with its obligations to repair and restore pursuant to Articles XI and XII 
thereof and is not otherwise in default under this Lease, Tenant may 
surrender the Leased Premises to Landlord without completion of such repair 
or restoration, and shall have no further obligations with respect thereto 
provided that Tenant, upon the termination of the Lease Term, relinquishes 
any rights to and assigns to Landlord all of Tenant's interest, if any, in 
insurance proceeds and pays to Landlord the amount of any insurance 
deductible to the extent such deductible amount has not already been expended 
on such repair or restoration, or any portion of an Award to which it is 
otherwise entitled under Article XII to the extent that it has not already 
been expended on such repairs or restoration.  If Landlord so requests, 
Tenant shall, at its sole cost and prior to the expiration or earlier 
termination of this Lease, remove any Leasehold Improvements not constructed 
or installed in compliance with Paragraph 5.1 or Paragraph 6.2 and repair all 
damage caused by such removal.  If the Leased Premises are not so surrendered 
at the termination of this Lease, Tenant shall be liable to Landlord for all 
costs incurred by Landlord in returning the Leased Premises to the required 
condition, plus interest, from the date of demand for payment of such costs 
to the date paid, on all costs incurred at the rate of Prime plus six percent 
(6%) per annum, but in no event less than thirteen and one half percent 
(13.5%) per annum.  Tenant shall indemnify Landlord against loss or liability 
resulting from delay by Tenant in so surrendering the Leased Premises, 
including, without limitation, any claims made by any succeeding tenant or 
losses to Landlord due to lost opportunities to lease to succeeding tenants.


                                         -34-

<PAGE>
                                                                          LOT B

          (b)  Upon expiration or earlier termination of the Lease Term, 
Tenant shall (i) remove so much or all of the raised flooring and cabling, 
except that portion installed over depressed slab, and so much or all of the 
UPS system and Halon systems, as may be requested by Landlord; (ii) deliver 
to Landlord the following documents or records - all computer CAD plans, 
building plans and specifications and repair and maintenance files; and (iii) 
have roof repatched and warranted by a professional roofer acceptable to 
Landlord in all areas where the roof is violated or otherwise affected by the 
removal of Tenant's property from any roof.  Tenant shall clean such area 
after removal.  All such removal and cleaning shall be at Tenant's sole cost 
and expense.

     15.2.     Holding Over.  Unless earlier terminated in accordance with 
this Lease or duly extended in accordance with this Lease, this Lease shall 
terminate without further notice at the expiration of the Lease Term.  Any 
holding over by Tenant after termination of this Lease shall not constitute a 
renewal or extension of the Lease or give Tenant any rights in or to the 
Leased Premises. Any holding over after such expiration with the consent of 
Landlord shall be construed to be a tenancy from month to month on the same 
terms and conditions herein specified insofar as applicable except that the 
monthly rent shall equal one twelfth (1/12) of the higher of one hundred 
fifty percent (150%) of the Base Annual Rent in effect during the last month 
prior to such termination or the then current Fair Market Rent.  The current 
Fair Market Rent shall be determined by agreement between Landlord and Tenant 
within thirty (30) days following the expiration of the Lease Term.  In the 
absence of such agreement as to the Fair Market Rent, it shall be determined 
as follows:

          (a)  Each party shall appoint an Appraiser within fifteen (15) days 
after notice of failure to agree given by one party to the other, and shall 
advise the other party of such appointment.  On the failure of either party 
so to appoint an Appraiser, and to advise the other party of such 
appointment, the person who has been appointed as Appraiser may appoint a 
second Appraiser to represent the party in default.

          (b)  The two (2) Appraisers appointed in either manner shall then 
proceed to establish the Base Annual Rent for each month of the hold over 
period.  In the event of their inability to agree upon the Base Annual Rent 
for each month of the hold over period within thirty (30) days after their 
appointment, then Landlord shall appoint a third Appraiser, provided however, 
that if the difference between the amounts respectively determined by the two 
(2) Appraisers is not greater than an amount equal to ten percent (10%) of 
the higher of the two (2) amounts so determined, then the Base Annual Rent 
for each month of the hold over period in question shall be the mean of such 
two amounts, and it shall not be necessary to appoint a third (3rd 
Appraiser).  In the event that Landlord fails to appoint a third (3rd) 
Appraiser within fifteen (15) days, then, in such event, the two Appraisers 
appointed by the parties pursuant to 15.2(a) above shall, by agreement, 
appoint the third Appraiser.


                                         -35-

<PAGE>
                                                                          LOT B

          (c)  In the event a third Appraiser is appointed, such Appraiser's 
determination of Base Annual Rent for each month of the hold over period 
shall be final so long as it is within the limits of the appraisals 
established by the Appraisers appointed by the parties pursuant to 15.2(a) 
above.  If the third Appraiser's appraisal is not within such limits, the 
determination of Base Annual Rent made by an Appraiser appointed pursuant to 
15.2(a) above which is the closest to that of the third Appraiser shall 
control.

          (d)  Landlord and Tenant shall divide equally the charges imposed 
by Appraisers selected under this Paragraph 15.2.

                                    ARTICLE XVI

                               INTENTIONALLY OMITTED


                                    ARTICLE XVII

                                 GENERAL PROVISIONS

     17.1.     Financial Information.  Tenant shall furnish to Landlord:

          (a)  As soon as available and in any event within forty-five (45) 
days after the end of each quarterly accounting period in each fiscal year of 
Tenant, copies of a consolidated balance sheet of Tenant and its consolidated 
subsidiaries as of the last day of such quarterly accounting period, and 
copies of the related consolidated statements of income and of changes in 
shareholders' equity and in financial position of Tenant and its consolidated 
subsidiaries for such quarterly accounting period and for the elapsed portion 
of the current fiscal year ended with the last day of such quarterly fiscal 
year ended with the last day of such quarterly accounting period, all in 
reasonable detail and with appropriate notes, if any, and stating in 
comparative form the figures for the corresponding dates and periods in the 
previous fiscal year, all prepared in accordance with the generally accepted 
accounting practice consistently applied, certified as complete and correct 
in all material respects by the chief financial officer of Tenant (subject to 
year-end audit adjustments), and otherwise in form satisfactory to Landlord;

          (b)  As soon as available and in any event within ninety (90) days 
after the end of each fiscal year of Tenant, copies of a consolidated balance 
sheet of Tenant and its consolidated subsidiaries as of the end of such 
fiscal year, and copies of the related consolidated statements of income and 
of changes in shareholders' equity and in financial position of Tenant and 
its consolidated subsidiaries for such fiscal year, all in reasonable detail 
and with appropriate notes, if any, and all prepared in accordance with 
generally 


                                         -36-

<PAGE>

                                                                   LOT B

accepted accounting practice consistently applied and stating in comparative 
form the corresponding figures as of the end of and for the previous fiscal 
year, and accompanied by an opinion or report thereon, in scope and substance 
satisfactory to Landlord, by Ernst Young & Company or such other firm of 
independent certified public accountants of recognized standing in the 
financial community as may be selected by Tenant and reasonably acceptable to 
Landlord and otherwise in a form satisfactory to Landlord;

          (c)  Notwithstanding the requirements set forth in Paragraphs 
17.1(a), 17.1(b) and 17.1(d), Tenant need not comply with such requirements 
if the stock of Tenant is traded on the New York Stock Exchange, or Tenant 
shall be required to file periodic reports with the Securities and Exchange 
Commission under the Securities Exchange Act of 1934, as amended, but Tenant 
shall be required to deliver to Landlord all financial information and 
reports as are sent to Tenant's shareholders at the same time as such 
information or reports are sent to Tenant's shareholders.

          (d)  Concurrently with each of the financial statements furnished 
pursuant to-Subparagraphs 17.1(a) or 17.1(b) above, a certificate signed by 
the chief financial officer of Tenant, to the effect that in the opinion of 
such officer, based upon a review made under his or her supervision, Tenant 
has performed and observed all of, and is not in default in the performance 
or observance of any of, its obligations under this Lease (or, if such be not 
the case, specifying all such defaults and failures, and the nature thereof, 
of which such officer may have knowledge and the action proposed to be taken 
in respect thereof);

          (e)  Copies of all regular and periodic reports or other reports 
which Tenant shall make or be required to file with (i) the Securities and 
Exchange Commission or (ii) any other federal or state regulatory agency or 
with any municipal or other local body which relate to the Leased Premises.

     17.2.     Landlord's Right to Enter.  Tenant shall permit Landlord and 
its agents to enter the Leased Premises at all reasonable times, upon not 
less than one (1) business day's notice, for the purpose of (i) inspecting 
the same; (ii) posting notices of nonresponsibility; (iii) exhibiting the 
Leased Premises to prospective purchasers and/or lenders; (iv) exhibiting the 
Leased Premises to prospective tenants within twenty-four (24) months prior 
to the expiration of the Lease Term; (v) determining whether Tenant is 
performing all its obligations hereunder; (vi) discharging Tenant's 
obligation (including the obligations to repair and maintain the Leased 
Premises) when Tenant has failed to do so after written notice from Landlord 
and the expiration of applicable cure periods; and/or (vii) within 
twenty-four (24) months of the expiration of the Lease Term, placing upon the 
Leased premises ordinary "for leases signs at places where Tenant shall 
reasonably select.  Tenant may elect to escort Landlord at all such times, 
and Landlord agrees to comply with Tenant's security requirements with 
respect to the Leased Premises.  Landlord shall not use, copy or publish any 
of Tenant's confidential or proprietary information obtained by Landlord in 
any such 


                                         -37-

<PAGE>
                                                                          LOT B

entry upon the Leased Premises, and Landlord shall maintain all such 
information in confidence.

     17.3.     Subordination.

          (a)  Subject to Subparagraph 17.3(b), this Lease is subject and 
subordinate, in lien and operation, to any underlying leases, mortgages, 
other title exceptions or objections, which affect the Leased Premises and 
are of public record as of the Commencement Date, and to all renewals, 
modifications, consolidations, supplements, replacements and extensions 
thereof, and all advances made or to be made thereunder for the full amount 
of such advances and without regard for the time or character of such 
advances.  This Lease is also subject and subordinate to any and all future 
mortgages affecting the Leased Premises which may hereafter be executed and 
placed of public record by Landlord after the Commencement Date, or any 
renewals, modifications, consolidations, supplements, replacements or 
extensions thereof, for the full amount of all advances made or to be made 
thereunder and without regard to the time or character of such advances.  
Without limitation on the foregoing provisions of this Section 17.3(a), this 
Lease is subject and subordinate to that certain Mortgage dated June 30, 1992 
from Landlord to Blue Bell Funding, Inc., as mortgagee, now held by United 
States Trust Company of New York, as trustee, mortgagee, and this Lease has 
been assigned as collateral security by Landlord to United States Trust 
Company of New York, as trustee, mortgagee under such Mortgage.  Tenant 
agrees, within ten (10) days after Landlord's written request therefor, to 
execute, acknowledge and deliver to Landlord any and all documents or 
instruments requested by Landlord or any Lender as may be reasonably 
necessary or proper to assure the subordination of this Lease to any such 
mortgage provided that such documents and instruments shall not impose upon 
Tenant obligations other than those set forth in this Lease.  However, if the 
lessor under any such lease or any Lender holding any such mortgage, shall 
advise Landlord that it desires or requires this Lease to be prior and 
superior thereto, then, upon written request of Landlord to Tenant, Tenant 
shall promptly execute, acknowledge and deliver any and all documents or 
instruments which Landlord or such lessor or Lender deems necessary or 
desirable to make this Lease prior thereto in lien and operation.

          (b)  Any automatic subordination of this Lease to any mortgage held 
by a Lender as provided in Subparagraph 17.3(a), shall be subject to and 
conditioned upon Landlord's obtaining from each Lender and delivering a copy 
thereof to Tenant an agreement (the "Nondisturbance and Subordination 
Agreement") providing that, even though this Lease is subordinate as set 
forth in Subparagraph 17.3(a), so long as Tenant is not in default under the 
terms of this Lease, insurance proceeds will be disbursed in accordance with 
Paragraph 11.1 hereof, notwithstanding anything in any such mortgage to the 
contrary, any action or proceeding to foreclose a mortgage held by such 
Lender will not result in the cancellation or termination of this Lease, and 
that in the event of the sale of the Leased Premises as the result of any 
action or proceeding to foreclosure any such mortgage, this Lease shall 
continue 


                                         -38-

<PAGE>

                                                                    LOT B

in full force and effect as a direct lease between Tenant and the then owner 
of the Leased Premises upon all of the terms, covenants and conditions in 
this Lease.  So long as the Nondisturbance and Subordination Agreement 
contains the Tenant protections provided in the immediately preceding 
sentence, the Nondisturbance and Subordination Agreement shall be in form and 
content reasonably acceptable to the applicable Lender and may contain, among 
other provisions, the following terms and conditions:  Tenant's confirmation 
of the subordination of the Lease to the mortgage held by the Lender; the 
agreement by Tenant that neither the Lender nor any purchaser at any 
foreclosure sale shall be liable for any act or omission of Landlord under 
the Lease, or subject to any offsets or defenses which Tenant may have at any 
time against Landlord; providing that Lender shall not be bound by any Rent 
which Tenant may have paid to Landlord for more than the current quarterly 
rental payment period; providing that Lender shall not be bound by any 
amendment or modification of the Lease made without Lender's consent, and; 
providing that Tenant agrees that any Lender, or any other entity or person 
which becomes the purchaser at foreclosure sale shall be liable only for the 
performance of the obligations of the Landlord under the Lease which arise 
and accrue during the period of such Lender's, entities' or person's 
ownership of the Leased Premises.

     17.4.     Tenant's Attornment.  Tenant shall attorn (i) to any purchaser 
of the Leased Premises at any foreclosure sale or private sale conducted 
pursuant to any security instrument encumbering the Leased Premises, (ii) to 
any grantee or transferee designated in any deed given in lieu of 
foreclosure, or (iii) to the lessor under any underlying ground lease in 
effect on the date hereof should such ground lease be terminated.

     17.5.     Estoppel Certificates.  At all times during the Lease Term, 
Tenant agrees, following any request by Landlord, to promptly execute and 
deliver to Landlord an estoppel certificate (i) certifying that this Lease is 
unmodified and in full force and effect, or, if modified, stating the nature 
of such modification and certifying that this Lease, as so modified, is in 
full force and effect, (ii) stating the date to which the Rent is paid in 
advance, if any, (iii) acknowledging that there are not, to Tenant's 
knowledge, any uncured defaults on the part of Landlord hereunder, or if 
there are uncured defaults on the part of Landlord, stating the nature of 
such uncured defaults, and (iv) certifying such other information about the 
Lease as may be reasonably required by Landlord.  Tenant's failure to deliver 
an estoppel certificate (or other response to Landlord's request therefor, if 
such certificate cannot practicably be given) within ten (10) business days 
after delivery of Landlord's request therefor (unless such request was not 
actually received by Tenant) shall be a conclusive admission by Tenant that, 
as of the date of the request for such statement, (i) this Lease is 
unmodified except as may be represented by Landlord in said request and is in 
full force and effect, (ii) there are no uncured defaults in Landlord's 
performance, and (iii) no Rent has been paid in advance.

     17.6.     Intentionally Omitted.


                                         -39-

<PAGE>
                                                                          LOT B

     17.7.     Determination of Fair Market Rent for Extension Periods.  The 
base Annual Rent for the first year of either the First Extension Period or 
the Second Extension Period shall be ninety percent (90%) of the annual Fair 
Market Rent for the Leased Premises for the first year of the applicable 
Extension Period, but not less than the amounts set forth on Exhibit B for 
the first year of the applicable Extension Period.  If Landlord and Tenant 
cannot agree on such Fair Market Rent, the Fair Market Rent shall be 
determined in accordance with the following procedure:

          (a)  Each party shall appoint an Appraiser within fifteen (15) days 
after notice of failure to agree given by one party to the other. and shall 
advise the other party of such appointment.  On the failure of either party 
so to appoint an Appraiser, and to advise the other party of such 
appointment, the person who has been appointed as Appraiser may appoint a 
second Appraiser to represent the party in default.

          (b)  The two (2) Appraisers appointed in either manner shall then 
proceed to establish the Base Annual Rent for the Extension Period in 
question based on the Fair Market Rent of the Leased Premises.  In the event 
of their inability to agree upon the Base Annual Rent for the Extension 
Period in question within thirty (30) days after their appointment, then 
Landlord shall appoint a third Appraiser, provided however, that if the 
difference between the amounts respectively determined by the two (2) 
Appraisers is not greater than an amount equal to ten percent (10%) of the 
higher of the two (2) amounts so determined, then the Base Annual Rent for 
the Extension Period in question shall be the mean of such two amounts, and 
it shall not be necessary to appoint a third (3rd) Appraiser.  In the event 
that Landlord fails to appoint a third (3rd) Appraiser within fifteen (15) 
days, then, in such event, the two Appraisers appointed by the parties 
pursuant to Subparagraph 17.1(a) above shall, by agreement, appoint the third 
Appraiser.

          (c)  In the event a third Appraiser is appointed, such Appraiser's 
determination of Base Annual Rent for the Extension Period in question shall 
be final so long as it is within the limits of the appraisals established by 
the Appraisers appointed by the parties pursuant to Subparagraph 17.7(a) 
above.  If the third Appraiser's appraisal is not within such limits, the 
determination of Base Annual Rent made by an Appraiser appointed pursuant to 
Subparagraph 17.7(a) above which is the closest to that of the third 
Appraiser shall control.

          (d)  Landlord and Tenant shall divide equally the charges imposed 
by Appraisers selected under this Paragraph 17.7.

     17.8.     Notices.  All notices, approvals, consents, requests, and 
other communications required or permitted to be given under this Lease shall 
be in writing and shall be deemed 


                                         -40-

<PAGE>

                                                                  LOT B

given when delivered personally, or when delivered by any nationally 
recognized next day delivery or courier service addressed to the party for 
which the item is intended as follows:

     To Tenant:         Unisys Corporation 
                        Township Line and Union Meeting Roads
                        Blue Bell, PA  19424-0001
                        Attn:  Real Estate Department

     With a copy to:    Unisys Corporation
                        Township Line and Union Meeting Roads
                        Blue Bell, PA   19424-0001
                        Attn:  Office of the General Counsel

     To Landlord:       Blue Bell Investment Company, L.P. 
                        c/o The Shidler Group
                        One Logan Square, Suite 1105
                        Philadelphia, PA  19103

     With a copy to:    F. Michael Wysocki, Esquire
                        Saul, Ewing, Remick & Saul
                        3800 Centre Square West
                        Philadelphia, PA  19102

     Landlord and Tenant shall each have the right from time to time, to 
specify as their proper addresses for purposes of notice under this Lease any 
other address upon the giving of due notice hereunder.

     17.9.     Corporate Authority.  Tenant represents and warrants that each 
individual executing this Lease on behalf of Tenant is duly authorized to 
execute and deliver this Lease on behalf of Tenant is duly authorized to 
execute and deliver this Lease on behalf of such corporation in accordance 
with its charter and by-laws and that this Lease is binding upon Tenant in 
accordance with its terms.  Tenant shall, within thirty (30) days after 
execution of this Lease, deliver to Landlord a certified copy of the 
resolution of its board of directors authorizing or ratifying the execution 
of this Lease, or of the general corporate authorization, which evidences the 
authority for the execution of this Lease.

     17.10.    Brokerage Commissions.  Tenant and Landlord each warrants to 
the other that it has not had any dealings with any real estate brokers or 
salesmen or incurred any obligations for the payment of real estate brokerage 
commissions or finder's fees which would be earned or due and payable by 
reason of the execution of this Lease, and each agrees to indemnify the other 
for its breach of its warranty under this Paragraph 17.10.


                                         -41-

<PAGE>
                                                                          LOT B

     17.11.    Entire Lease.  This Lease, the Exhibits attached to this Lease 
(which by this reference are incorporated herein), the Environmental 
Indemnity and the Trust Agreement are the entire agreement between the 
parties respecting the subject matter covered by such documents.  Tenant 
acknowledges that neither Landlord nor Landlord's agent(s) has made any 
representation or warranty as to (i) whether the Leased Premises may be used 
for Tenant's intended use under existing Law or (ii) the suitability of the 
Leased Premises for the conduct of Tenant's business or the condition of any 
Improvements.  Tenant expressly waives all claims for damage by reason of any 
statement, representation, warranty, promise or other agreement of Landlord 
or Landlord's agent(s), if any, not contained in this Lease or in any 
amendment hereto.  No amendment to this Lease shall be binding unless in 
writing and signed by the parties hereto.  Landlord and Tenant acknowledge 
that the First Lease is terminated as of the date of this Lease, except for 
any obligations of Tenant which by the terms of the First Lease survive the 
termination of the First Lease.

     17.12.    Limited Liability of Landlord.  The liability of Landlord with 
respect to this Lease shall be limited to and enforceable only out of 
Landlord's assets.  No partners of Landlord shall have any liability 
hereunder.

     17.13.    Governing Law.  This Lease shall be governed by the laws of 
the Commonwealth of Pennsylvania.

     17.14.    Quiet Enjoyment.  Tenant, upon paying all Base Annual Rent, 
all Additional Rent, and all other amounts provided for in this Lease and not 
being in default under this Lease, shall peaceably and quietly have and enjoy 
the Leased Premises throughout the Lease Term without hindrance by Landlord 
or by anyone claiming by, through or under Landlord, subject, however, to the 
provisions, exceptions, reservations, and conditions of this Lease.

     17.15.    Successors and Assigns.  Subject to the provisions of this 
Agreement, this Lease shall be binding upon, and inure to the benefit of the 
permitted successors and assigns of Landlord and Tenant.

     17.16.    Tenant's Obligations to Lenders.  Any obligation of Tenant to 
comply with any requirement of a Lender is subject to Landlord's prior 
notification to Tenant of such Lender's identity and address.


                                         -42-

<PAGE>
                                                                          LOT B

          IN WITNESS WHEREOF, Landlord and Tenant have executed this Lease 
with the intent to be legally bound thereby, as of the date first above 
written.

                              BLUE BELL INVESTMENT COMPANY, L.P. 
                              by its sole General Partner, 
                              Strategic Facility Investors, Inc.


Attest:_____________________  By:___________________________________
                                   Clay W. Hamlin, III
                                   President


                              UNISYS CORPORATION, 
                              a Delaware corporation


Attest:_____________________  By:___________________________________
                                   Name:
                                   Title:













                                         -43-

<PAGE>
                                                                          LOT B


                        WAIVER OF PRIOR HEARING CERTIFICATION


          Tenant acknowledges that the above Lease authorizes and empowers 
Landlord, without any prior notice or a prior hearing, to cause the entry of 
judgments against the undersigned for possession of the Leased Premises and 
immediately thereafter, without prior notice or a prior hearing, to exercise 
post-judgment enforcement and execution remedies.  Tenant acknowledges that 
Tenant has agreed to waive the Tenant's rights to prior notice and a hearing 
under the Constitution of the United States, the Constitution of the 
Commonwealth of Pennsylvania and all other applicable state and federal laws, 
in connection with Landlord's ability to cause the entry of judgments against 
the Tenant and immediately thereafter exercise Landlord's post-judgment 
enforcement and execution remedies (which may include, without limitation, 
removal of the Tenant from the Leased Premises by law enforcement officers).  
Tenant's counsel has reviewed the legal impact of this waiver with the Tenant 
and Tenant acknowledges that Tenant has freely waived such rights as an 
inducement to Landlord to enter into this Lease.  The individual executing 
this Certification warrants that he or she is authorized to agree to such 
waiver on behalf of Tenant.

                                   TENANT:

                                   UNISYS CORPORATION, a Delaware corporation


Date:____________, 19____          By:_____________________________________

                                   Name:___________________________________

                                   Title:__________________________________

<PAGE>

                                                                       LOT B

                                     EXHIBIT B

                                   RENT SCHEDULE

Annual Rent
- -----------

The Base Annual Rent payable during the initial Lease Term shall be as follows:

For the period from the Commencement Date,
April 1, 1997 through June 30, 1997                                 $616,893.38

For the period from July 1, 1997 through June 30, 1998            $2,516,925.00

For the period from July 1, 1998 through June 30, 1999            $2,567,264.00

For the period from July 1, 1999 through June 30, 2000            $2,618,609.00

For the period from July 1, 2000 through June 30, 2001            $2,670,981.00

For the period from July 1, 2001 through June 30, 2002            $2,724,401.00

For the period from July 1, 2002 through June 30, 2003            $2,778,889.00

For the period from July 1, 2003 through June 30, 2004            $2,834,467.00

For the period from July 1, 2004 through June 30, 2005            $2,891,151.00

For the period from July 1, 2005 through June 30, 2006            $2,948,979.00

For the period from July 1, 2006 through June 30, 2007            $3,007,959.00

For the period from July 1, 2007 through June 30, 2008            $3,068,118.00

For the period from July 1, 2008 through June 30, 2009            $3,129,480.00

Annual Extension Rent 
- ---------------------

The Base Annual Rent for the first year (July 1, 2009 through June 30, 2010) 
of the First Extension Period shall be ninety percent (90%) of Fair Market 
Rent, but not less than $3,096,353.00.

<PAGE>

                                                                       LOT B


Beginning the first day of the second year of the First Extension Period and 
on each annual anniversary thereafter, the Base Annual Rent shall be 
increased by two percent (2%) per annum.

The Base Annual Rent for the first year July 1, 2015 through June 30, 2016 of 
the Second Extension Period shall be ninety percent (90%) of Fair Market 
Rent, but not less than $3,418,624.00.

Beginning the first day of the second year of the Second Extension Period and 
on each annual anniversary thereafter, the Base Annual Rent shall be 
increased by two percent (2%) per annum.

If Landlord and Tenant cannot mutually agree on the Fair Market Rent for the 
first year of the Leased Premises for either the First Extension Period or 
the Second Extension Period, the Fair Market Rent for the Leased Premises for 
the first year shall be determined in accordance with Paragraph 17.7 of the 
Lease to which this is an Exhibit.


<PAGE>

                                                                  Exhibit 10.8
                                                                          LOT C

                                       
                                LEASE AGREEMENT


     THIS LEASE AGREEMENT (the "Lease"), is made as of March 12, 1997 
between BLUE BELL INVESTMENT COMPANY, L.P., a Delaware limited partnership, 
whose address is c/o Clay W. Hamlin, III, The Shidler Group/Philadelphia, One 
Logan Square, Suite 1105, Philadelphia, Pennsylvania 19103 (the "Landlord"), 
and UNISYS CORPORATION, a Delaware corporation, whose address is P.O. Box 
500, Township Line and Union Meeting Roads, Blue Bell, Pennsylvania 19424 
(the "Tenant").

                              W I T N E S S E T H:

     Landlord and Tenant entered into a Lease as of June 30, 1992 (the "First
Lease") for Tenant's leasing of certain real estate of which the Leased Premises
(defined below) are a part.  Pursuant to Paragraph 17.6 of the First Lease,
Landlord and Tenant are dividing the First Lease into Separate Leases (as
defined in the First Lease) to replace the First Lease.  This Lease is one of
the Separate Leases.  

      In consideration of the mutual covenants and agreements contained herein,
the parties, intending to be legally bound hereby, agree as follows:

                                   ARTICLE I
                                  DEFINITIONS

     1.1. Defined Terms.  For purposes of this Lease, the following terms shall
have the following meanings:

     "Additional Rent" shall have the meaning set forth in paragraph 3.2.

     "Appraiser" shall have the meaning set forth in Subparagraph 12.2(d).

     "Award" shall mean all compensation, sums, or anything of value awarded,
paid or received on a total or partial Condemnation.

     "Bankruptcy Code" shall have the meaning set forth in Subparagraph 13.7(g).

     "Base Annual Rent" shall have the meaning set forth in Paragraph 3.1.


                                         -1-
<PAGE>

                                                                          LOT C

     "Building" shall mean the building constituting a portion of the Leased
Premises, which building, as of the Commencement Date consists of approximately,
219,065 rentable square feet.

     "Commencement Date" shall mean the date of this Lease.

     "Condemnation" shall mean (i) any taking by the exercise of the power of
eminent domain, whether by legal proceedings or otherwise, or (ii) a voluntary
sale or transfer by Landlord to any condemnor, either under threat of
condemnation or while legal proceedings for condemnation are pending.

     "Condemnor" shall have the meaning set forth in Paragraph 12.2.

     "Date of Taking" shall mean the date the condemnor has the right to
possession of the property being condemned.

     "Environmental Indemnity" shall mean the Environmental Indemnity Agreement
of even date herewith between Landlord and Tenant and relating to the real
property constituting the Leased Premises.

     "Extension Periods" means the First Extension Period and the Second
Extension Period.

     "First Extension Period" shall have the meaning set forth in Subparagraph
2.2(b).

     "Fair Market Rent" shall mean the fair market rental value determined as if
the Leased Premises were available in the then rental market at the time such
determination is to be made for comparable buildings in comparable metropolitan
Philadelphia locations and assuming that Landlord has had a reasonable time to
locate a willing tenant who rents with the knowledge of the uses to which the
Leased Premises can be adapted without major structural, building systems or
interior renovation, and that neither Landlord nor the prospective tenant is
under any compulsion to rent.

     "Fair Market Value" shall mean the aggregate amount which would be
obtainable in an arm's length transaction at the time such determination is to
be made for the purchase of a fee simple title of the Leased Premises (assuming,
for valuation purposes only, that the same are free and clear of all mortgage or
similar liens) between an informed and willing buyer  under no compulsion to buy
and an informed and willing seller under no compulsion to sell.

     "HVAC" shall have the meaning set forth in Subparagraph 6.1(a).


                                         -2-
<PAGE>

                                                                          LOT C

     "Improvements" means the Landlord's Improvements and the Leasehold
Improvements.

     "Initial Lease Term" shall have the meaning set forth in Subparagraph
2.2(a).

     "Landlord's Improvements" shall mean all improvements, fixtures, equipment
and other property on the Leased Premises on the Commencement Date (except for
Trade Fixtures and Vendor Supplied Equipment) and all improvements, fixtures and
equipment constructed on the Leased Premises at Landlord's expense during the
Lease Term.

     "Laws" shall mean any judicial decision, statute, constitution, ordinance,
resolution, regulation, rule, administrative order or other requirement of any
municipal, county, state, local, federal or other government agency or authority
having jurisdiction over the parties to this Lease or the Leased Premises, or
both, in effect either at the Commencement Date or any time during the Lease
Term, including, without limitation, any regulation, order or policy of any
quasi-official entity or body (e.g. board of fire examiners, public utilities or
special district).

     "Lease Term" shall mean the Initial Lease Term and, to the extent that
Tenant exercises its options to extend beyond the Initial Lease Term, shall also
include the First Extension Period and the Second Extension Period.

     "Leased Premises" shall mean the real property described in Exhibit A
hereto, including all Improvements thereon.

     "Leasehold Improvements" shall mean all improvements, additions,
alterations and fixtures installed on the Leased Premises at Tenant's expense
after the Commencement Date at any time which are permanently attached or
affixed to the Leased Premises.

     "Lender" shall mean any beneficiary, mortgagee, secured party or other
holder of any deed of trust, mortgage or other written security device or
agreement affecting Landlord's interest in the Leased Premises and any note and
other obligations secured thereby and shall also mean any lender making a loan
or otherwise extending credit in connection with the purchase of the Leased
Premises from Tenant.

     "Less Than Substantially All" shall mean a portion of the Leased Premises
that is not all or Substantially All of the Leased Premises.

     "Minor Work" shall have the meaning set forth in Subparagraph 5.1(a).

     "Nondisturbance and Subordination Agreement" shall have the meaning set
forth in Subparagraph 17.3(b).


                                         -3-
<PAGE>

                                                                          LOT C

     "Operating Expenses" shall include all expenses of any nature relating to
the operation, maintenance, repair or upkeep of the Leased Premises, all of
which shall be borne by Tenant, including, without limitation, those expenses
referred to in Paragraphs 6.1, 6.2, 7.1 and 7.2.

     "Paragraph 12.2 Value" shall have the meaning set forth in Paragraph 12.2
hereof.

     "Present Value" shall mean with respect to any amount due at a future time
or times referred to in this Lease, the discounted value of such amount computed
by discounting such amount by Thirty-day LIBOR as of the date of such
determination.

     "Prime" shall mean the interest rate quoted by Citibank, N.A., New York,
New York, or its successors, as the publicly announced applicable lending rate
for its most creditworthy commercial customers.

     "Private Restrictions" shall mean all recorded covenants, conditions and
restrictions, agreements, other documents, reciprocal easement agreements and
any unrecorded documents known to Tenant, in effect on the Commencement Date, or
thereafter entered into or consented to by Tenant, or otherwise expressly
permitted by this Lease, affecting the Leased Premises from time to time.

     "Real Property Taxes" shall have the meaning set forth in Paragraph 8.1
hereof.

     "Rent" shall mean Base Annual Rent and Additional Rent.

     "Second Extension Period" shall have the meaning set forth in Subparagraph
2.2(b) hereof.

     "Subdivision Plan" shall mean that certain Subdivision Plan prepared by
Chambers Associates, Inc., Consulting Engineers and Surveyors, Center Square,
Pennsylvania, dated September 1, 1990, last revised February 25, 1991, and
recorded March 8, 1991 in Plan Book A-52 page 357.

     "Substantially All" shall mean a portion of the Leased Premises (that is,
less than all of the Leased Premises) which leaves remaining a balance that may
not be economically operated for the purpose for which the Leased Premises was
operated prior to the Condemnation in question, in Landlord's and Tenant's
reasonable judgment.

     "Thirty-day LIBOR" shall mean the London Interbank Offered Rate for thirty
(30) days, fixed at 11 a.m. (London time), as quoted to Landlord by Citibank,
N.A., New York, New York, or its successors.


                                         -4-
<PAGE>

                                                                          LOT C


     "Trade Fixtures" shall mean all movable equipment, furniture, furnishings
and other personal property belonging to Tenant on the Leased Premises or
installed in the Leased Premises by Tenant at Tenant's expense which are not
permanently attached to the Leased Premises; provided, however, that all of
Tenant's signs and Tenant's equipment not necessary for the operation of the
Leased Premises without regard to the particular business conducted thereon
(i.e. systems and facilities not integral to the buildings and other
improvements) shall be Trade Fixtures whether or not permanently attached or
affixed to the Leased Premises.

          "Trust Agreement" means the Trust Agreement of even date with this
Lease among Landlord, Tenant and the United States Trust Company of New York, as
trustee, as such Trust Agreement may be amended and shall include any specific
successor Trust Agreement relating solely to this Lease and entered into
pursuant to Paragraph IX.B of the Trust Agreement.

     "Vendor Supplied Equipment" shall mean property on the Leased Premises
belonging to a third party, other than Landlord or Tenant.


                                  ARTICLE II

                            DEMISE AND ACCEPTANCE

     2.1. Demise of Premises.  Landlord hereby demises and leases to Tenant, and
Tenant hereby leases from Landlord, the Leased Premises for the Lease Term, upon
and subject to the terms and conditions of this Lease.  During the Lease Term,
Tenant shall have the nonexclusive right to use for vehicular access purposes
the access roads through Lot A, Lot B and Lot C shown on the Subdivision Plan in
common with the owners and tenants, and their respective invitees of such Lot A,
Lot B and Lot C.

     2.2. Term.

          (a)  This Lease shall be for a period commencing on the Commencement
Date and ending at midnight on June 30, 2009 (the "Initial Lease Term").

          (b)  Provided that there exists no default by Tenant under this Lease
at the time of exercise, and at the commencement of the applicable Extension
Period, Tenant shall have the option to extend the Initial Lease Term for two
(2) periods, the first for sixty (60) months (referred to herein as the "First
Extension Period") and the second for fifty nine months (59) (the "Second
Extension Period").  Tenant may exercise its option only by written notice to
Landlord given (i) with respect to the First Extension Period, not later than
five hundred and forty seven (547) days prior to the expiration of the Initial
Lease Term, and 

                                         -5-
<PAGE>

                                                                          LOT C

(ii) with respect to the Second Extension Period, not less than five hundred and
forty seven (547) days prior to the expiration of the First Extension Period. 
If Tenant elects to exercise its first option to extend, the First Extension
Period shall commence on the first (1st) day following the expiration of the
Initial Lease Term.  If Tenant elects to exercise its second option to extend,
the Second Extension Period shall commence on the first (1st) day following the
expiration of the First Extension Period.  Tenant shall not have the option to
extend the Lease Term for the Second Extension Period unless Tenant have first
exercised Tenant's option to extend the Lease Term for the First Extension
Period.  Such extensions of the Lease Term shall be upon the same terms and
conditions as set forth in this Lease, except that Tenant shall not have any
further rights to extend the Lease Term beyond the Second Extension Period and
the Base Annual Rent under this Lease shall be increased and determined as set
forth on Exhibit C.

     (c)  Acceptance of Premises.  Tenant confirms that Tenant accepted
possession of the Leased Premises in the condition existing as of the
Commencement Date.  Landlord makes no warranty, express or implied, as to the
condition of the Leased Premises or the suitability of the Leased Premises for
Tenant's use or for any other purpose.  Tenant acknowledges that it has had
possession of the Leased Premises prior to the date of this Lease and is fully
aware of and thoroughly familiar with the condition (including, without
limitation, environmental conditions) of the Leased Premises.


                                  ARTICLE III

                                     RENT

     3.1. Base Annual Rent.  Commencing on the Commencement Date and continuing
throughout the Lease Term, Tenant shall pay to Landlord as annual rent (the
"Base Annual Rent") the amounts determined in accordance with, and during the
periods indicated on Exhibit C hereto.  The Base Annual Rent for each period
indicated on Exhibit C shall be paid in equal quarterly installments in advance
on the first day of each quarterly period.  A quarterly period shall mean a
period of three (3) calendar months, and the quarterly periods shall commence on
April 1, 1997.  Tenant has paid Base Annual Rent through March 31, 1997.

     3.2. Additional Rent.  Commencing on the Commencement Date and continuing
throughout the Lease Term, Tenant shall pay, as additional rent, all other
amounts due and payable by Tenant under this Lease (collectively, the
"Additional Rent").

     3.3. Payment of Rent.  All Rent required to be paid in quarterly
installments shall be paid in advance on the first day of each quarterly period
during the Lease Term.  All Rent (including Base Annual Rent and Additional
Rent) shall be paid in lawful money of the 

                                         -6-
<PAGE>

                                                                          LOT C

United States, without any abatement, deduction or offset whatsoever, except to
the extent otherwise specifically provided in Paragraph 8.5 (relating to tax
contests), Paragraph 10.1 (with respect to Landlord's negligence or willful
misconduct), Paragraph 11.1 (relating to failure to make insurance proceeds
available to Tenant), and Paragraph 12.2 (relating to partial condemnation), and
Paragraph 17.10 (relating to indemnity for brokerage fees), and without any
prior demand therefor, to Landlord at the address for Landlord first above
written or such other address or by wired funds (at Tenant's election) to
Landlord's account, as Landlord may designate by written notice to Tenant from
time to time (including, without limitation to a Lender, or Lenders) or as
otherwise specified by the provisions of this Lease.  Tenant's obligation to pay
Base Annual Rent shall be prorated to account for a partial quarterly period at
the commencement and the expiration or sooner termination of the Lease Term and
the prorated amount for the partial period at the commencement of the Lease Term
shall be due and payable on the Commencement Date.  Tenant's obligation to pay
Additional Rent shall be prorated at the expiration or sooner termination of the
Lease Term.

     3.4. Net Lease.  This Lease is what is commonly called a "Triple Net
Lease," it being understood that Landlord shall receive the Rent free and clear
of any and all other impositions, taxes, liens, charges or expenses of any
nature whatsoever in connection with the ownership, operation, maintenance
(whether structural or otherwise), repair, occupancy, and use of the Leased
Premises (excluding payments of any mortgage or obligations or charges for
capital improvements or other matters incurred by Landlord and not required to
be made by Tenant under this Lease).  Except as may be otherwise specifically
provided in this Paragraph, (relating to Landlord's mortgages or other
obligations) , Paragraph 8.5 (relating to tax contests), Paragraph 11.1
(relating to failure to make insurance proceeds available to Tenant), Paragraph
10.1 (with respect to Landlord's negligence or willful misconduct), Paragraph
12.2 (relating to partial condemnation), and Paragraph 17.10 (relating to
indemnity for brokerage fees), Landlord shall not be responsible for any costs,
expenses, or charges of any kind or nature respecting the Leased Premises. 
Landlord shall not be required to render any services of any kind to Tenant or
to the Leased Premises.


                                  ARTICLE IV

                            USE OF LEASED PREMISES

     4.1. Use of Premises; Compliance with Laws.  Tenant shall use the Leased
Premises only for the purposes permitted by Laws and in accordance with Private
Restrictions.  Tenant shall not use or permit any person to use the Leased
Premises for any use or purpose in violation of any Laws or Private
Restrictions, including, without limitation, Laws pertaining to the
environmental condition of the Leased Premises.  Tenant shall, at its own cost
and expense, abide by and promptly observe and comply with all Laws and Private
Restrictions applicable to the Leased Premises.  Tenant shall not do or permit
anything to be 

                                         -7-
<PAGE>

                                                                          LOT C

done in or on the Leased Premises which might cause damage to the Leased
Premises or might place any loads upon any floor, wall or ceiling which might
damage or endanger any portion of the Leased Premises.  Tenant shall not operate
any equipment in or on the Leased Premises in a manner which will injure the
Leased Premises, which will overload existing electrical systems or mechanical
equipment servicing the Leased Premises, or which will impair the efficient
operation of the sprinkler system (if any) within the Leased Premises.  Tenant
shall not commit nor permit to be committed any waste upon the Leased Premises,
and Tenant shall keep the Leased Premises in a condition free of any nuisances.

     4.2. Insurance Requirements.  Tenant shall not use the Leased Premises in
any manner or for any purpose (other than the manner in which and the purposes
for which the Leased Premises are used on the Commencement Date), or permit any
use of the Leased Premises or any act to be committed on the Leased Premises, if
any such use or act will cause a cancellation of any insurance policy covering
the Leased Premises.  Tenant shall not sell, keep or use, or permit to be kept,
used, or sold, in or about the Leased Premises any article which may be
prohibited by the standard form of fire insurance policy.  Tenant shall, at its
sole cost and expense, comply with all requirements of any insurance company,
insurance underwriter, or Board of Fire Underwriters which are necessary to
maintain the insurance coverage required under this Lease.

                                  ARTICLE V
                                          
                  TRADE FIXTURES AND LEASEHOLD IMPROVEMENTS
                                          
     5.1. Leasehold Improvements.

          (a)  Except for Minor Work, Tenant shall not construct any Leasehold
Improvements or otherwise alter the Leased Premises without Landlord's prior
approval, and not until Landlord shall have first approved the plans and
specifications therefor, which approvals shall not be unreasonably withheld,
conditioned or delayed.  If Landlord does not object to proposed Leasehold
Improvements within fifteen (15) business days after being presented with plans
and specifications therefor in accordance with this Paragraph 5.1, such proposed
Leasehold Improvements shall be deemed approved.  All such Leasehold
Improvements and alterations (including Minor Work) and all demolition shall be
performed, constructed and installed by Tenant at Tenant's expense, in
substantial compliance with the approved plans and specifications therefor (if
such plans and specifications are required hereunder) and in strict accordance
with all Laws and Private Restrictions.  All such construction and installation
and demolition shall be done in a good and workmanlike manner using materials of
good quality.  Tenant shall not commence construction of any Leasehold
Improvements or alterations or commence any demolition until (i) all required
governmental approvals and permits shall have been obtained and (ii) all
requirements regarding insurance imposed by this Lease shall have been
satisfied.  The term "Minor Work" as used herein, 

                                         -8-
<PAGE>

                                                                          LOT C

shall mean any construction of Leasehold Improvements not involving any
structural change or substantial change in the character of the Improvements,
and involving a cost of less than Two Hundred Thousand Dollars ($200,000);
provided that, for purposes of determining such cost, multiple construction or
alteration projects shall be aggregated to the extent they are related to each
other, whether undertaken simultaneously or sequentially.  All Leasehold
Improvements shall remain the property of Tenant during the Lease Term but shall
not be damaged, altered or removed from the Leased Premises.  If any Minor Work
involves a cost of less than Fifty Thousand Dollars ($50,000), Tenant shall
neither be required to obtain Landlord's prior consent therefor nor shall Tenant
be required to give any prior notice thereof to Landlord.  If any Minor Work
involves a cost of in excess of Fifty Thousand Dollars ($50,000), but less than
Two Hundred Thousand Dollars ($200,000), Tenant shall not be required to obtain
Landlord's prior consent therefor but shall give Landlord ten (10) days prior
written notice of its intention to commence such construction or alteration
together with any then available plans and specifications.  Following completion
of construction or alteration of any Leasehold Improvement, Tenant shall furnish
to Landlord copies of all plans, specifications or drawings prepared by Tenant
in connection with such Leasehold Improvement.  At the expiration or sooner
termination of the Lease Term, all Leasehold Improvements shall be surrendered
to Landlord as a part of the Leased Premises and shall then become Landlord's
property, and Landlord shall have no obligation to reimburse Tenant for all or
any portion of the value or cost thereof; provided, however, that if Landlord
shall require Tenant to remove any Leasehold Improvements (not constructed or
installed in accordance with Paragraph 5.1 or Paragraph 6.2), in accordance with
the provisions of Paragraph 15.1, then Tenant shall so remove such Leasehold
Improvements prior to the expiration or sooner termination of the Lease Term.

          (b)  In connection with any proposed Leasehold Improvements or other
alterations or additions or work or demolition by Tenant and in addition to
other conditions that may be reasonably imposed by Landlord as a condition to
Landlord's approval, Tenant shall secure all necessary licenses and permits; use
reasonable efforts to secure effective waivers from all persons or firms who
will be furnishing labor or materials, waiving the right to file any mechanics
lien against the Leased Premises or interest of Landlord or Tenant therein;
cause any contractors and subcontractors to carry workmen's compensation
insurance in statutory amounts and comprehensive public liability insurance in
accordance with current industry practice and use reasonable efforts to obtain
and deliver to Landlord certificates of all such insurance.

          (c)  All Leasehold Improvements, demolition, repairs, alterations,
additions and improvements performed by Tenant shall be done in a good and
workmanlike manner in compliance with all Laws, Private Restrictions, and the
reasonable requirements of the insurers of the Leased Premises.  During the
performance of any such work by Tenant, Tenant shall obtain and maintain
customary comprehensive general public liability, property damage, builders and
all risk, workmen's compensation and other insurance covering 

                                         -9-
<PAGE>

                                                                          LOT C

Landlord, Tenant and each Lender whose mortgage so requires coverage.  Tenant
shall promptly pay for such work and shall discharge any and all liens filed
against the Leased Premises arising therefrom.

          (d)  Tenant shall not permit any mechanics or other liens or claims
thereof to exist upon the Leased Premises or any portion thereof arising out of
the acts, omissions to act, or contracts of Tenant, or anyone claiming by,
through, or under Tenant or for whom Tenant is responsible.  Tenant shall remove
or have removed or remove or have removed by bonding over any mechanics',
materialman's or other lien or claim thereof filed against the Leased Premises,
any other portion thereof, or any other property owned by Landlord, by reason of
work, labor, services or materials provided for or at the request of Tenant or
for any contractor or subcontractor employed by Tenant, or otherwise arising out
of Tenant's use of the Leased Premises and shall exonerate, protect, defend and
hold free and harmless Landlord against and from any and all such claims or
liens.  All persons and other entities are hereby notified that the interest of
Landlord in the Leased Premises shall not be subject to liens for Leasehold
Improvements made by or for Tenant, and that Tenant has no right, power, or
authority to subject the Leased Premises or any part thereof or Landlord's
interest therein, to any mechanics', materialman's or other similar liens.

          (e)  Tenant, with Landlord's prior written consent which shall not be
unreasonably withheld, conditioned or delayed, may, at Tenant's own risk and
expense, lawfully erect or place its standard signs concerning the business of
Tenant within the buildings containing the Leased Premises and/or on the
exterior walls thereof and/or elsewhere on the Leased Premises, and Tenant
agrees to maintain said signs in a good state of repair; to save Landlord
harmless from loss, cost or damages as a result of the erection, maintenance,
existence or removal of such signs; and to repair any damage which may have been
caused by the erection, existence, maintenance or removal of such signs.  At the
end of the Lease Term, Tenant agrees to remove such signs at its expense. 
Landlord hereby expressly consents to all Tenant's signs on the Leased Premises
on the Commencement Date.

     5.2. Alterations Required by Law.  Tenant shall, at its sole cost, make any
alteration, addition, replacement, or change of any sort, whether structural or
otherwise, to the Leased Premises that is required by any Laws.

     5.3. Landlord's Improvements.  All Landlord's Improvements shall become a
part of the realty and belong to Landlord.

                                         -10-
<PAGE>

                                                                          LOT C

                                  ARTICLE VI

                       REPAIR, MAINTENANCE AND SECURITY

     6.1. Tenant's Obligation To Maintain.

          (a)  Tenant shall, at all times and at Tenant's sole cost and expense,
clean, keep, and maintain in good order, condition, and repair the Leased
Premises and every part thereof and all fixtures and Improvements therein and
thereon, through regular inspections and servicing, and make replacements of
such equipment, systems and building components as reasonably necessary
throughout the Lease Term, including without limitation (i) all plumbing and
sewage facilities (including all sinks, toilets, faucets and drains), including
repair of leaks around ducts, pipes, vents, or other parts of the heating,
ventilation and air conditioning systems ("HVAC") or plumbing system, (ii) all
fixtures, interior walls, floors, ceilings, windows, doors, entrances, plate
glass, showcases, and skylights, (iii) all electrical facilities and all
equipment including all lighting fixtures, lamps, bulbs and tubes, fans, vents,
exhaust equipment and systems, (iv) all fire extinguisher equipment, (v) any
landscaping (including any necessary replanting) and irrigation systems, (vi)
all parking areas (including any necessary painting, striping, patching or
resurfacing), (vii) the exterior, floors and roof of all buildings contained
within the Leased Premises (including any necessary painting or resurfacing of
walls and any patching, resurfacing or replacement of roofs to preserve the same
or to repair leaks) and (viii) all structural parts of the Improvements.  All
glass, both interior and exterior, is the sole responsibility of Tenant, and any
broken glass shall promptly be replaced by Tenant at Tenant's expense with glass
of the same kind (to the extent permitted by applicable building codes), size
and quality.  Tenant shall be responsible for the maintenance, repair and
replacement when necessary of all HVAC equipment which serves the Leased
Premises and shall keep the same in good condition through regular inspection
and servicing.  Tenant shall promptly remove all snow, ice, and debris from all
sidewalks, curbs, parking areas and roadways located upon or adjacent to the
Leased Premises.  At the expiration or other termination of this Lease, Tenant
will deliver the Leased Premises in good condition and repair, normal wear and
tear excepted.

          (b)  All repairs and replacements required of Tenant hereunder shall
be promptly made with materials of good quality.  If the work results in a
change in the character of the Improvements or affects the structural parts of
the Leased Premises or if the estimated cost of any item of repair or
replacement is in excess of Two Hundred Thousand Dollars ($200,000.00), Tenant
shall first obtain Landlord's written approval, which shall not be unreasonably
withheld, conditioned or delayed, provided such repairs and replacements shall
otherwise comply with the requirements of Article V.

          (c)  Tenant shall not be required to replace the roof on any of the
Improvements or resurface any of the parking lots on the Leased Premises within
the twelve 

                                         -11-
<PAGE>

                                                                          LOT C

(12) months prior to the expiration of the Lease Term, provided that Tenant
shall have otherwise performed its obligations under this Paragraph 6.1.

     6.2. Security.  Tenant shall employ and coordinate the services of
reasonably skilled and responsible persons as security guards, janitors and
maintenance workers, or such other staff, as may be necessary, in Tenant's
reasonable judgment, for the security, protection and maintenance of the Leased
Premises.  Such individuals shall be under the supervision, direction and
control of Tenant who shall fix their compensation and have the exclusive right
to employ and terminate employment of any and all such individuals or such
individuals employer; such individuals shall not be or be deemed to be the
employees of Landlord for any purpose whatsoever.


                                  ARTICLE VII

                         WASTE DISPOSAL AND UTILITIES

     7.1. Waste Disposal.  Tenant shall store its waste in accordance with all
applicable Laws either inside the Building) contained within the Leased Premises
or within outside trash enclosures which are designed for such purpose.  All
entrances to such outside trash enclosures shall be kept closed, and waste shall
be stored in such manner as not to be visible from the exterior of such outside
enclosures.  Tenant shall cause all of its waste to be regularly removed from
the Leased Premises at Tenant's sole cost.  Tenant shall keep all fire corridors
and mechanical equipment rooms in the Leased Premises free and clear of all
obstructions at all times.

     7.2. Utilities.  Tenant shall promptly pay, as the same become due, all
charges for water, gas, electricity, telephone, sewer service, waste pick-up,
and any other utilities, materials or services furnished directly or indirectly
to or used by Tenant on or about the Leased Premises during the Lease Term. 
Landlord, upon reasonable prior notice to Tenant, and on not more than a
quarterly basis, may inspect Tenant's records of payment of utilities.

                                 ARTICLE VIII

                             REAL PROPERTY TAXES

     8.1. Real Property Taxes Defined.  The term "Real Property Taxes" as used
in this Lease shall mean (i) all taxes, assessments, levies, and other charges
of any kind or nature whatsoever, general and special, foreseen and unforeseen
(including all installments of principal and interest required to pay any
general or special assessments for public improvements and any increases
resulting from reassessments caused by any change in ownership) now or hereafter
imposed by any governmental or quasi-governmental authority 

                                         -12-
<PAGE>

                                                                          LOT C

or special district having the direct or indirect power to tax or levy
assessments, which are levied or assessed against, or with respect to the value,
occupancy or use of, all or any portion of the Leased Premises (as now
constructed or as may at any time hereafter be constructed, altered, or
otherwise changed) or Landlord's interest therein; any Improvements located
within the Leased Premises (regardless of ownership); the fixtures, equipment
and other property of Landlord, real or personal, that are an integral part of
and located on the Leased Premises; or parking areas, public utilities, or
energy within the Leased Premises; and (ii) all charges, levies or fees imposed
by reason of environmental regulation or other governmental control of the
Leased Premises.  If at any time during the Lease Term the taxation or
assessment of the Leased Premises prevailing as of the Commencement Date shall
be altered so that in lieu of or in addition to any Real Property Taxes
described above, there shall be levied, assessed or imposed (whether by reason
of a change in the method of taxation or assessment, creation of a new tax or
charge, or any other cause) an alternative or additional tax or charge (i) on
the value, use or occupancy of the Leased Premises or Landlord's interest
therein, or (ii) on or measured by the gross receipts, gross income or gross
rentals from the Leased Premises, on Landlord's business of leasing the Leased
Premises, or computed in any manner with respect to the operation of the Leased
Premises, then any such alternate or additional tax or charge, however
designated, shall be included within the meaning of the term "Real Property
Taxes" for purposes of this Lease.  If any Real Property Taxes are based upon
property or rents unrelated to the Leased Premises, then only that part of such
Real Property Taxes that is fairly allocable to the Leased Premises shall be
included within the meaning of the term "Real Property Taxes."  Notwithstanding
the foregoing, the term "Real Property Taxes" shall not include estate,
inheritance, transfer, gift or franchise taxes of Landlord or Landlord's
federal, state or local income tax capital stock tax or wealth tax.

     8.2. Tenant's Obligation To Pay.  Landlord and Tenant agree that all bills
for Real Property Taxes shall be sent directly by the appropriate government or
quasi government authorities to Tenant.  As Additional Rent, Tenant shall pay
directly to the appropriate governmental or quasi-governmental authorities all
Real Property Taxes no later than ten (10) days before such Real Property Taxes
become payable with any interest or penalty for late payment.  Tenant shall pay
such taxes before the due date therefor and shall be responsible for payment of
any interest or penalties with respect thereto.  Concurrently with any such
payment, Tenant shall supply Landlord with written evidence that all Real
Property Taxes then due and payable shall have been paid in accordance with this
Article.  Tenant shall only be required to pay those Real Property Taxes or
installments thereof which are payable with respect to periods during the Lease
Term, with appropriate proration at the end of the Lease Term.

     8.3. Taxes on Tenant's Leased Premises.  Tenant shall pay by the due date
therefor any and all taxes, assessments, license fees, and public charges
levied, assessed, or imposed 

                                         -13-
<PAGE>

                                                                          LOT C

against Tenant or Tenant's interest in this Lease or Trade Fixtures which become
payable during the Lease Term.

     8.4. Tax Segregation.  The Buildings is separately assessed and taxed as of
the Commencement Date.

     8.5. Tax Contest.  In the event that Tenant shall desire in good faith to
contest or otherwise review by appropriate legal or administrative proceeding
any Real Property Taxes, Tenant shall, no later than thirty (30) days after
Tenant receives notice of the Real Property Taxes assessment Tenant desires to
contest, give Landlord written notice of its intention to do so.  Tenant may
withhold payment of the Real Property Taxes being contested if, but only if,
both (i) nonpayment is permitted during the pendency of such proceedings without
the foreclosure of any tax lien or the imposition of any fine or penalty and
(ii) Tenant shall obtain and furnish Landlord with a bond or other security
device, and otherwise comply with the requirements of the Lenders, sufficient to
protect Landlord's interest in the Leased Premises in an amount not less than
one hundred percent (100%) of the amount contested.  Any such contest shall be
prosecuted to completion (whether or not this Lease shall have expired or
terminated in the interim) and shall be conducted without delay and solely at
Tenant's expense.  Tenant shall indemnify, defend, and hold harmless Landlord
from and against any and all expense, liability or damage resulting from such
contest or other proceeding.  At the request of Tenant, Landlord shall join in
any contest or other proceedings which Tenant may desire to bring pursuant to
this Paragraph 8.5. Tenant shall pay all of Landlord's reasonable expenses
(including attorneys' fees) arising out of such joinder.  Within thirty (30)
days after the final determination of the amount due from Tenant with respect to
the Real Property Taxes contested, Tenant shall pay the amount so determined to
be due, together with all costs, expenses and interest, whether or not this
Lease shall have then expired or terminated.  Any recovery or refund of Real
Property Taxes in accordance with this Subparagraph 8.5 shall be the property of
and shall be paid to Tenant.


                                   ARTICLE IX
                                       
                                   INSURANCE
                                          
     9.1. Tenant's Insurance.  Tenant shall, at its own expense and cost,
maintain the following policies of insurance in full force and effect during the
Lease Term:

          (a)  "All risk" insurance, including but not limited to, loss or
damage occasioned by fire, the perils included in the so-called extended
coverage endorsement, vandalism and malicious mischief, sprinkler leakage,
collapse, explosion, earthquake, flood and water damage and containing
Replacement Cost, Lease Amount and Demolition and 

                                         -14-
<PAGE>

                                                                          LOT C

Increased Cost due to Ordinance endorsements covering the Leased Premises and
all replacements and additions thereto, and all fixtures and equipment.  The
foregoing coverage shall be provided in amounts sufficient to provide one
hundred percent (100%) of the full replacement cost of the Leased Premises, and
shall be determined from time to time, but not more frequently than once in any
twenty-four (24) calendar months, at Tenant's expense, at the request of
Landlord, by any appraiser selected by Tenant and approved by Landlord and the
insurance carrier, which approval by Landlord shall not be unreasonably
withheld, conditioned or delayed.

          (b)  comprehensive general liability insurance applying to the use and
occupancy of the Leased Premises, or any part thereof, and the business operated
by Tenant on the Leased Premises, with coverages including, but not limited to,
premises operations, explosion, collapse, sprinkler leakage, and products and
completed operations, blanket contractual, Broad Form property damage, and
independent contractors.  Such insurance shall include Broad Form Contractual
liability insurance coverage insuring all of Tenant's indemnity obligations
under this Lease.  The general liability coverage shall have a minimum combined
single limit of liability of at least One Million Dollars ($1,000,000.00) and a
general aggregate limit of One Million Dollars ($1,000,000.00). Tenant shall
carry an umbrella policy in the amount of at least twenty-five million dollars
($25,000,000).

          (c)  Workers' compensation insurance in accordance with applicable Law
and employers' liability insurance.

          (d)  Boiler and Machinery Broad Form policy covering explosion
insurance in respect of steam and pressure boilers and similar apparatus, if
any, located on the Leased Premises in an amount equal to one hundred percent
(100%) of the full replacement cost of the Leased Premises.

          (e)  Such other insurance with respect to the Leased Premises as
Landlord or any Lender, from time to time may reasonably request against such
insurable hazards or risks which at the time in question are commonly insured
against in the case of property similar to, or whose use is similar to the use
of, the Leased Premises.

     9.2. Policies.  Tenant shall furnish to Landlord on the Commencement Date
and thereafter within forty five (45) days prior to the expiration of each such
policy, certificates of insurance issued by the insurance carrier of each policy
of insurance required under this Lease showing applicable coverages.  Each
certificate shall expressly provide that such policies shall not be cancellable
or subject to reduction of coverage or otherwise be subject to modification
except after thirty (30) days' prior written notice to the parties named as
insureds herein and other certificate holders.  At Landlord's request, Tenant
shall deliver abstracts of such policies to Landlord and Landlord's designees
holding an interest in the Leased Premises.  Landlord, Landlord's successors and
assigns and any designee of Landlord 

                                         -15-
<PAGE>

                                                                          LOT C

holding any interest in the Leased Premises, including the holder of any fee,
interest or mortgage, shall be additional named insureds under each policy of
insurance maintained by Tenant, except for workers' compensation insurance.  All
insurance policies carried by Tenant pursuant to this Article IX shall be issued
by insurance companies with a rating of "Good" or better as rated in Best's
Insurance Guide.  Any deductible amounts under any insurance policies required
hereunder shall be subject to Landlord's prior written approval if such
deductibles would exceed One Hundred Thousand Dollars ($100,000.00) as to
property hazard coverage, One Million Dollars ($1,000,000.00) as to liability
coverage, and Ten Million Dollars ($10,000,000.00) as to earthquake.  All
policies shall be written to apply to property damage, personal injury and other
covered loss, however occasioned, occurring during the policy term and shall be
endorsed to add Landlord and any designee of Landlord having any interest in the
Leased Premises as an additional insured (provided that such endorsement shall
not include Landlord or its agents, employees or contractors as additional
insureds for acts of negligence or willful misconduct by Landlord included
within Landlord's liability under Paragraph 10.1 and excluded from Tenant's
indemnity pursuant to Paragraph 10.2) and to provide that such coverage shall be
primary and that any insurance maintained by Landlord shall be excess insurance
only.  All such insurance shall provide for severability of interest; shall
provide that an act or omission of one of the named insureds shall not reduce or
avoid coverage to the other named insureds; and shall afford coverage for all
claims based on acts, omissions, injury and damage, which claims occurred or
arose (or the onset of which occurred or arose) in whole or in part during the
policy period.  If Tenant shall fail to procure any insurance required under
this Lease or to deliver the certificates or policies required under this
Paragraph 9.2, Landlord may, at its option and in addition to Landlord's other
remedies in the event of a default by Tenant hereunder, procure such insurance
for the account of Tenant, and the cost thereof shall be paid to Landlord as
Additional Rent on demand.  Claims under all property insurance policies
covering Landlord's buildings and Landlord's Improvements shall be adjusted with
the insurance company or companies subject to Landlord's approval.

     9.3. Release and Waiver of Subrogation.  The parties hereto release each
other, and their respective authorized representatives, from any claims for
injury to any persons or damage to property that are caused by or result from
risks insured against under any insurance policies carried by the parties and in
force at the time of such damage, but only to the extent such claims are covered
by such insurance.  This release shall be in effect only so long as the
applicable insurance policies contain a clause to the effect that this release
shall not affect the right of the insured to recover under such policies.  Each
party shall cause each insurance policy obtained by it to provide that the
insurance company waives all rights of recovery by way of subrogation against
either party in connection with any damage covered by such policy.

     9.4. Landlord's Insurance Option.  Landlord, at Landlord's option, and upon
prior notice to Tenant, may procure, at Tenant's sole cost, the insurance
required by this Article 

                                         -16-
<PAGE>

                                                                          LOT C

IX, or such other insurance as may be deemed necessary or desirable by Landlord,
provided that the cost of such insurance to Tenant shall not exceed the cost
that would have been imposed upon Tenant for insurance required under this
Article IX had Tenant procured such insurance.  If Landlord elects to procure
such insurance, Tenant shall be relieved of Tenant's obligation to procure such
insurance under this Article IX, but Tenant shall remain obligated to pay the
cost of such insurance in accordance with the requirements of this Article IX. 
Landlord shall provide copies of such insurance to Tenant.  At any time upon at
least thirty (30) days' prior notice to Tenant, Landlord may stop procuring
insurance under this Paragraph 9.4, in which case Tenant shall be responsible
for maintaining insurance in accordance with the requirements of this Article
IX.

                                  ARTICLE X

                           LIMITATION ON LANDLORD'S
                           LIABILITY AND INDEMNITY

     10.1. Limitation on Landlord's Liability.  Except for loss proximately
caused by Landlord or Landlord's agents', employees', or contractors' negligence
or willful misconduct, Landlord shall not be liable to Tenant, nor shall Tenant
be entitled to exercise any other rights or remedies, for any injury to Tenant,
its agents, employees, contractors or invitees, or any other person or entity
claiming, by, through, or under Tenant for damage to Tenant's property or loss
to Tenant's business resulting from any cause, including, without limitation,
any (i) failure or interruption of any HVAC or other utility system or service;
(ii) governmental regulation, including a rationing or other control of utility
services or use of the Leased Premises; or (iii) penetration of water into or
onto any portion of the Leased Premises through roof leaks or otherwise.

     10.2. Indemnification of Landlord.  Tenant shall not do or permit any
act or thing on or about the Leased Premises which may subject Landlord to any
liability or responsibility for injury, damages to persons or property or to any
liability by reason of any violation of Laws or of any legal requirement of any
public authority or Private Restrictions but shall exercise such control over
the Leased Premises as to fully protect Landlord against any such liability. 
Tenant shall hold harmless, indemnify and defend Landlord, and its employees,
agents and contractors, and any other person or entity claiming by, through or
under Landlord, from all liability, penalties, losses, damages, costs, expenses,
causes of action, claims and/or judgments (including reasonable attorneys' fee)
arising by reason of any death, bodily injury, personal injury or property
damage (i) resulting from any cause or causes whatsoever (other than the
negligence or willful misconduct of Landlord or Landlord's agents, employees or
contractors to the extent of Landlord's liability under Paragraph 10.1)
occurring in, on or about or resulting from an occurrence in, on or about the
Leased Premises during the Lease Term, or (ii) resulting from the acts or
omissions of Tenant, its agents, employees and contractors, (iii) resulting from
any failure by Tenant to perform and 


                                         -17-
<PAGE>

                                                                          LOT C

observe its covenants and obligations under this Lease, or (iv) any other matter
or thing arising from Tenant's occupancy or use of, or any action or omission
of, Tenant, its employees, agents, contractors, invitees or visitors on, about,
adjacent to, or relating to activities at, or the use of the Leased Premises. 
The provisions of this Article shall survive the expiration or sooner
termination of this Lease.


                                  ARTICLE XI
                                       
                          DAMAGE TO LEASED PREMISES

     11.1. Duty To Restore.  If the Leased Premises are damaged by any 
casualty after the Commencement Date, Tenant shall restore fully the Leased 
Premises to substantially the same condition that existed prior to such 
casualty.  All insurance proceeds shall be promptly made available to Tenant 
for the payment of the repairs and restoration of such damage or casualty; 
provided that such proceeds may be made available to Tenant subject to 
reasonable conditions and customary construction loan disbursement 
procedures, including provision by Tenant of an independent architect's 
certification of the cost of such repair or restoration, together with plans 
and specifications therefor and shall be deemed made available for such 
repair or restoration if they are made available through and are disbursed 
under such reasonable conditions and customary construction loan disbursement 
procedures.

     In the event of damage to or destruction of the Leased Premises which
results in Tenant's loss of use of the Leased Premises, or a portion thereof,
and the cost of repair and replacement is less than one million dollars
($1,000,000), as shall be established by Tenant to Landlord by written notice
accompanied by an independent architect's certification of cost, then if
insurance proceeds are not made available to Tenant for repair and restoration
within thirty (30) days from the date that any such proceeds shall have been
made available to Landlord or a Lender, and providing Tenant is not in default
under the Lease, Tenant may abate Base Annual Rent in the same proportion as the
rentable square footage rendered unusable by such damage or destruction bears to
the total rentable square footage of the Leased Premises; provided that Tenant
shall not be entitled to such Base Annual Rent abatement until ten (10) business
days following written notice by Tenant to Landlord and any Lender identified as
a named insured under the policy or policies of insurance on the Leased Premises
that such proceeds have not been made available to Tenant within such thirty
(30) day period and, following such notice, such proceeds are not made available
to Tenant within such ten (10) day period.  Base Annual Rent abatement shall
continue until all such insurance proceeds are made available to Tenant.

     In the event of damage to or destruction of the Leased Premises which
results in Tenant's loss of use of the Leased Premises, or a portion thereof,
and the cost of repair and replacement is more than one million dollars
($1,000,000), as shall be established by Tenant 

                                         -18-
<PAGE>

                                                                          LOT C

to Landlord by written notice accompanied by an architect's certification of
cost, then if insurance proceeds are not made available to Tenant for repair and
restoration within thirty (30) days from the date that any such proceeds shall
have been made available to Landlord or a Lender, and providing Tenant is not in
default under the Lease, Tenant may terminate this Lease; provided that Tenant
shall not be entitled to terminate this Lease until ten (10) business days
following written notice by Tenant to Landlord and any Lender identified as a
named insured under the policy or policies of insurance on the Leased Premises
that such proceeds have not been made available to Tenant within such thirty
(30) day period and, following such notice, such proceeds are not made available
to Tenant within such ten (10) day period.

     Unless Tenant is in default under this Lease or its not complying with
Tenant's obligations under Article IX, Tenant shall not be obligated to expend
any amount in excess of the amount of insurance deductibles plus insurance
proceeds made available for such restoration.  Upon the issuance of all
necessary governmental permits, Tenant shall commence and diligently prosecute
to completion the restoration of the Leased Premises, to the extent then allowed
by Laws, to substantially the same condition as that existing immediately prior
to such damage or destruction.

     11.2. No Termination or Rent Abatement.  Damage to, or destruction of
all or any portion of the Leased Premises by fire or by any other cause shall
not, except as provided in Paragraph 11.1, give Tenant the right to terminate
this Lease nor entitle Tenant to surrender the Leased Premises, nor in any way
affect Tenant's obligation to pay the Base Annual Rent or Additional Rent, and,
except under certain specified, limited circumstances referred to in Paragraph
3.3, there shall be no abatement, diminution or reduction of Base Annual Rent or
Additional Rent payable under this Lease for any cause whatsoever.


                                 ARTICLE XII
                                       
                                 CONDEMNATION
                                       
     12.1. Total Condemnation.  If all or Substantially All of the Leased 
Premises are taken by Condemnation, this Lease shall terminate on the Date of 
Taking.

     12.2. Partial Condemnation.  If Less than Substantially All of the 
Leased Premises is taken by Condemnation, this Lease shall terminate as to 
the portion taken and otherwise remain in full force and effect, except that 
the amount of Base Annual Rent due hereunder, from time to time, shall be 
reduced, from and after the Date of Taking in the same proportion as the 
Award bears to the Fair Market Value of the Leased Premises (including the 
real estate subject to the Condemnation) on the Date of Taking (the 
"Paragraph 12.2 Value") as determined by the condemning authority (the 
"Condemnor") and subject to a final

                                         -19-
<PAGE>

                                                                          LOT C

Award and final Paragraph 12.2 Value (after the exhaustion of all appeals if so
desired by Landlord or Tenant).  Landlord shall have no obligation to restore
the Leased Premises, or otherwise compensate Tenant (except through such Base
Annual Rent reduction), in the event of such partial Condemnation, provided
that, to the extent it can be determined or established that a portion of the
Award represents damages for repair and reconstruction of the remaining portion
of the Leased Premises following such Condemnation received by Landlord for such
Condemnation, Landlord shall promptly make available to Tenant such portion of
the Award for use by Tenant in repairing or restoring the Leased Premises.  Any
portion of an Award shall be deemed made available for such repair and
restoration if it is made available through and disbursed under reasonable
disbursement conditions and customary construction loan disbursement procedures.
If the Condemnor does not establish the Paragraph 12.2 Value, the Paragraph 12.2
Value shall be determined by agreement between Landlord and Tenant on or before
thirty (30) days before the Date of Taking using, to the extent possible, the
same basis and assumptions as Condemnor used in the calculation of the Award. 
In the absence of such agreement as to Paragraph 12.2 Value, it shall be
determined as follows:

          (a)  Each party shall appoint an Appraiser (hereinafter defined)
within ten (10) days after notice of failure to agree given by one party to the
other, and shall advise the other party of such appointment.  On the failure of
either party so to appoint an Appraiser, and to advise the other party of such
appointment, the person who has been appointed as Appraiser may appoint a second
Appraiser to represent the party in default.

          (b)  The two (2) Appraisers appointed in either manner shall then
proceed to establish the Paragraph 12.2 Value using, to the extent possible, the
same basis and assumptions as the Condemnor used in the calculation of the
Award.  In the event of their inability to agree upon the Paragraph 12.2 Value
within thirty (30) days after their appointment, then they shall appoint a third
Appraiser, provided however, that if the difference between the amounts
respectively determined by the two (2) Appraisers is not greater than an amount
equal to ten percent (10%) of the higher of the two (2) amounts so determined,
then the Paragraph 12.2 Value shall be the mean of such two amounts, and it
shall not be necessary to appoint a third (3rd) Appraiser.  In the event that a
third (3rd) Appraiser is not appointed within fifteen (15) days after the
expiration of the thirty (30) day period referenced to in the first sentence of
this Subparagraph 12.2(b), then, in such event, the chief executive officer of
the Philadelphia Chapter of the American Institute of the Appraisers shall
appoint the third Appraiser.

          (c)  In the event a third Appraiser is appointed, such Appraiser's
determination of Paragraph 12.2 Value shall be final so long as it is within the
limits of the appraisals established by the Appraisers appointed by the parties
pursuant to Subparagraph 12.2(a) above.  If the third Appraiser's appraisal is
not within such limits, the determination  

                                         -20-
<PAGE>

                                                                          LOT C

of Paragraph 12.2 Value made by an Appraiser appointed pursuant to Subparagraph
12.2(a) above which is the closest to that of the third Appraiser shall control.

          (d)  As used in this Lease, "Appraiser" shall mean an independent
M.A.I. appraiser who has at least ten (10) years, experience in appraising
commercial real estate in the Philadelphia, Pennsylvania area.  Neither party
shall be precluded from appointing an independent Appraiser whom such party had
previously employed as an independent Appraiser; except that the third
Appraiser, if appointed, may not have been previously employed by either party.

          (e)  Landlord and Tenant shall divide equally the charges of
Appraisers selected under this Paragraph 12.2.

     12.3. Temporary Taking.  If all or Substantially All of the Leased 
Premises is temporarily taken by Condemnation for a period which either 
exceeds one (1) year or which extends beyond the expiration of the Leased 
Term, then Landlord and Tenant shall each independently have the option to 
terminate this Lease, effective on the date possession is taken by the 
Condemnor.

     12.4. Division of Condemnation Awards.  Any Awards made as a result of 
any Condemnation of the Leased Premises shall belong to and be paid to 
Landlord, and Tenant hereby assigns to Landlord all of its right, title and 
interest in any such Award; provided, however, that Tenant shall be entitled 
to receive any Award that is made expressly (i) for the taking of Trade 
Fixtures, (ii) for the interruption of Tenant's business or its moving costs, 
(iii) for any temporary taking where this Lease is not terminated as a result 
of such taking and/or (iv) as provided in Paragraph 12.2 regarding damages 
for repair and reconstruction of the remaining portion of the Leased Premises 
following such Condemnation. the rights of Landlord and Tenant regarding any 
Condemnation shall be determined as provided in this Article, and each party 
hereby waives the provisions of any Laws allowing either party to petition a 
court to terminate this Lease in the event of a partial taking of the Leased 
Premises.

     12.5. Other Condemnation Provisions.  If this Lease is not terminated 
pursuant to Article XII, Tenant shall repair any damage caused by such 
condemnation so as to restore the remaining portion of the Leased Premises as 
nearly as practicable to the condition thereof immediately prior to such 
Condemnation to the extent that Tenant receives an Award resulting from the 
Condemnation sufficient to make such repair and restoration.

                                         -21-
<PAGE>

                                                                         LOT C

                                 ARTICLE XIII

                             DEFAULT AND REMEDIES

     13.1. Events of Default.  Tenant shall be in default of its obligations
under this Lease if any of the following events shall occur:

           (a)  Tenant shall have failed to pay Base Annual Rent or Additional
Rent on the dates due under this Lease; provided that (i) Landlord shall give
Tenant notice of such failure and fifteen (15) days to cure such failure and
(ii) following such fifteen (15) day period if Tenant shall still have failed to
pay such Base Annual Rent or Additional Rent, Landlord shall give Tenant a
second notice of such failure and an additional fifteen (15) days to cure such
failure before Tenant shall be in default hereunder; or

           (b)  Tenant shall have failed to perform (i) any term, covenant, or
condition of this Lease except those requiring the payment of Base Annual Rent
or Additional Rent or (ii) any term, covenant or condition of the Environmental
Indemnity, and, in the case of either (i) or (ii) of this Subparagraph 13.1(b),
Tenant shall have failed to cure such failure within thirty (30) days after
written notice from Landlord specifying the nature of such breach; provided that
if any such breach cannot reasonably be cured within such thirty (30) day period
then Tenant shall have a reasonable period to cure such breach, so long as
Tenant commences to cure the breach within such thirty (30) day period and
thereafter diligently, in good faith and using reasonable efforts, pursues such
cure to completion, except that Tenant shall not under any circumstances have
more than thirty (30) days following such written notice to cure any monetary
default under the Environmental Indemnity; or

           (c)  Tenant shall have made a general assignment of its assets 
for the benefit of its creditors; or

           (d)  Tenant shall have assigned its interest in this Lease in
violation of the provisions contained in Article XIV, whether voluntarily or by
operation of law; or

           (e)  Tenant shall have permitted the sequestration or attachment 
of, or execution on, or the appointment of a custodian or receiver with 
respect to, all or substantially all of the property of Tenant and Tenant 
shall have failed to obtain a return or release of such property within 
thirty (30) days thereafter, or prior to sale pursuant to such sequestration, 
attachment or levy, whichever is earlier; or

           (f)  A court shall have made or entered any decree or order with
respect to Tenant or Tenant shall have submitted to or sought a decree or order
(or a petition or pleading shall have been filed in connection therewith) which:
(i) grants or constitutes (or seeks) an order for relief, appointment of a
trustee, or confirmation of a reorganization plan 

                                         -22-
<PAGE>

                                                                         LOT C

under the bankruptcy laws of the United States; (ii) approves as properly filed
(or seeks such approval of) a petition seeking liquidation or reorganization
under said bankruptcy laws or any other debtor's relief law or statute of the
United States or any state thereof; or (iii) otherwise directs (or seeks) the
winding up or liquidation of Tenant; and such petition, decree or order shall
have continued in effect for a period of thirty (30) or more days.

           (g)  So long as the Landlord under this Lease and under the Lease of
even date herewith between Landlord and Tenant with respect to Lot A shown on
the Subdivision Plan (the "Lot A Lease") are the same entity or person, Tenant
under the Lot A Lease shall have defaulted under the Lot A Lease.

           (h)  So long as the Landlord under this Lease and under the Lease of
even date herewith between Landlord and Tenant with respect to Lot B shown on
the Subdivision Plan (the "Lot B Lease") are the same entity or person, Tenant
under the Lot B Lease shall have defaulted under the Lot B Lease.

     13.2. Landlord's Remedies.  In the event of any default by Tenant, 
Landlord shall have the following remedies, in addition to all other rights 
and remedies provided by any Laws or otherwise provided in this Lease, or 
otherwise available to Landlord, to which Landlord may resort cumulatively, 
or in the alternative:

           (a)  Landlord may, at Landlord's option, terminate this Lease, by
written notice of termination specifying the date of termination of this Lease
on which date this Lease shall terminate, and take and retain possession of the
Leased Premises by any means legally available to Landlord, including summary
dispossess proceedings.  To the extent required by applicable Laws, Landlord
shall attempt to relet all or any part of the Leased Premises in any manner, for
any term, for such rent and upon terms reasonably satisfactory to Landlord, and
if applicable Laws do not require Landlord to attempt to so relet, Landlord
shall use commercially reasonable efforts, accepted in the industrial/commercial
real estate industry in the suburban counties contiguous to Philadelphia,
Pennsylvania, for real estate of the type and condition of the Leased Premises,
to relet all or any part of the Leased Premises in any manner, for any term, for
such rent and upon terms reasonably acceptable to Landlord.  Landlord may make
any repairs, changes, additions or alterations in or to the Leased Premises that
may be necessary for such reletting, taking into account the character and then
current use of the Leased Premises.  If the Leased Premises are relet, Tenant
shall be liable to Landlord for the Present Value (determined at the time of
Landlord's demand) of the difference between the amount of Base Annual Rent,
Additional Rent, and all other amounts payable hereunder and the net proceeds of
any such reletting (net of all reasonable expenses, including without
limitation, repairs or construction costs and leasing commissions relating to
such reletting), and Tenant shall pay to Landlord the Present Value of such
difference immediately upon demand by Landlord.  Any termination under this
Subparagraph 13.2(a) shall not relieve Tenant from the payment of any sums then
due Landlord or from 

                                         -23-
<PAGE>

                                                                         LOT C

any claim against Tenant for damages or Rent accrued and then accruing.  In no
event shall any act or omission by Landlord, in the absence of a written
election by Landlord to terminate this Lease, constitute a termination of this
Lease, including, without limitation:

                (i)  Appointment of a receiver or keeper in order to protect
Landlord's interest hereunder;

                (ii) Consent or refusal to consent to any assignment of this
Lease by Tenant, whether pursuant to the provisions hereof or otherwise; or

                (iii)     Any other action by Landlord or Landlord's agents
intended to mitigate the adverse effects of any breach of this Lease by Tenant,
including without limitation any action taken to maintain and preserve the
Leased Premises or any action taken to relet the Leased Premises or any portions
thereof, for the account of Tenant and in the name of Tenant.

           (b)  Landlord may, at Landlord's option, with or without terminating
this Lease, take and retain possession of the Leased Premises by any means
legally available to Landlord, including summary dispossess proceedings.  If
Landlord elects to terminate Tenant's right to possession only, without
terminating this Lease, Landlord may, following taking possession of the Leased
Premises in accordance herewith, remove Tenant's signs and other evidences of
tenancy, without such entry and possession terminating the Lease or releasing
Tenant, in whole or in part, from Tenant's obligations to pay Rent hereunder for
the Lease Term or for any other of Tenant's obligations under this Lease.  To
the extent required by applicable Laws, Landlord shall attempt to relet all or
any part of the Leased Premises in any manner, for any term, for such rent and
upon terms reasonably satisfactory to Landlord, and if applicable Laws do not
require Landlord to attempt to so relet, Landlord shall use commercially
reasonable efforts, accepted in the industrial/commercial real estate industry
in the suburban counties contiguous to Philadelphia, Pennsylvania, for real
estate of the type and condition of the Leased Premises, to relet all or any
part of the Leased Premises in any manner, for any term, for such rent and upon
terms reasonably acceptable to Landlord.  Landlord may make any repairs,
changes, alterations or additions in or to the Leased Premises that may be
necessary for such reletting, taking into account the character and then current
use of the Leased Premises.  If Landlord is unable to relet the Leased Premises,
Tenant will pay Landlord on demand all amounts due from Tenant to Landlord under
this Lease for the remainder of the Lease Term.  If the Leased Premises are
relet, Tenant shall be liable to Landlord for the Present Value (determined at
the time of Landlord's demand) of the difference between the amount of Base
Annual Rent, Additional Rent, and all other amounts payable hereunder and the
net proceeds of any such reletting (net of all reasonable expenses, including
without limitation, repairs or construction costs and leasing commissions
relating to such reletting), and Tenant shall pay to Landlord the Present Value
of such difference immediately upon demand by Landlord.

                                         -24-
<PAGE>

                                                                         LOT C

           (c)  Landlord may, at Landlord's election, keep this Lease in effect
and enforce all of its rights and remedies under this Lease, including (i) the
right to recover the Base Annual Rent and Additional Rent and other sums as they
become due by appropriate legal action, and (ii) the right to invoke the
remedies of injunctive relief and specific performance to compel Tenant to
perform its obligations under this Lease.

           (d)  If Tenant is in default under this Lease and abandons or vacates
the Leased Premises, this Lease shall not terminate unless Landlord gives Tenant
written notice of its election to so terminate this Lease.  No act by or on
behalf of Landlord intended to mitigate the adverse effect of such breach,
including, without limitation, those described by Subparagraphs 13.2(a)(i), (ii)
and (iii), shall constitute a termination of Tenant's right to possession unless
Landlord gives Tenant written notice of termination.  Should Landlord not
terminate this Lease by giving Tenant written notice, Landlord may enforce all
its rights and remedies under this Lease, including the recovery of Rent as it
becomes due and payable under this Lease.

           (e)  If Landlord terminates this Lease, Landlord, in addition to all
other rights and remedies available to Landlord in the event of Tenant's
default, but subject to the provisions of the second sentence of Subparagraph
13.2(a), shall be entitled, at Landlord's election, to damages as provided under
applicable Laws or as set forth in Subparagraph 13.2(e)(i) and (ii).  For
purposes of computing such damages (i) an interest rate of Prime plus six
percent (6%) per annum, but in no event less than thirteen and one half percent
(13.5%) per annum, shall be used where permitted, and (ii) Rent due under this
Lease shall include Base Annual Rent, Additional Rent and all other amounts
payable by Tenant under this Lease, prorated on a monthly basis where necessary
to compute such damages.  Such damages shall include, without limitation:

                (i)  The worth of the amount by which the Rent for the 
balance of the Lease Term after the time of termination exceeds the fair 
rental value of the Leased Premises for the balance of the Lease Term as 
reasonably estimated solely by Landlord, such worth shall be the Present 
Value of the amount determined pursuant to the preceding clause, computed by 
discounting such amount at Thirty-day LIBOR at the time of judgment; and

                (ii) Any other amount necessary to compensate Landlord for all
detriment caused by Tenant's failure to perform Tenant's obligations under this
Lease or for expenses incurred by Landlord in performing Tenant's obligations
under this Lease, or which in the ordinary course of things would be likely to
result therefrom, including, without limitation, the following:  (a) expenses
for cleaning, repairing or restoring the Leased Premises; (b) expenses for
repairing the Leased Premises for the purpose of reletting, including
installation of leasehold improvements (whether such installation be funded by a
reduction of rent, direct payment or allowance to a new tenant, or otherwise);
(c) broker's fees, advertising costs and other expenses of reletting the Leased
Premises; (d) costs of 

                                         -25-
<PAGE>

                                                                         LOT C

carrying the Leased Premises, such as taxes, insurance premiums, utilities and
security precautions; (e) expenses in retaking possession of the Leased
Premises; (f) attorneys' fees and court costs incurred by Landlord in retaking
possession of the Leased Premises and in reletting the Leased Premises; and (g)
the portion of any brokerage commission paid by Landlord in procuring this Lease
attributable to the remaining balance of the Lease Term.

           (f)  Subject to Landlord's compliance with the requirements of the
Trust Agreement, Landlord may, at Landlord's option, exercise Landlord's rights
and remedies under the Trust Agreement.

           (g)  Landlord may exercise any other legal or equitable right or
remedy which Landlord may have.

           (h)  Nothing in this Paragraph shall limit Landlord's rights to
indemnification from Tenant as provided in this Lease.

     13.3. Landlord's Right to Cure.  All covenants and agreements to be kept 
or performed by Tenant under any of the terms of this Lease shall be 
performed by Tenant at Tenant's sole cost and expense and without any 
abatement of Rent (except to the extent referred to in Paragraph 3.3 of this 
Lease).  If Tenant shall fail to pay any sum of money required to be paid by 
it hereunder or shall fail to perform any other act on its part to be 
performed hereunder following any notice and cure period required under 
Subparagraph 13.1(a) or 13.1(b) (whether such payment or performance is due 
to or in favor of Landlord or any third party), Landlord may, but shall not 
be obliged to, and without waiving any default of Tenant or releasing Tenant 
from any obligations to Landlord hereunder, make any such payment or perform 
any such other act on Tenant's part to be made or performed as in this Lease 
provided (including but not limited to Tenant's obligations pursuant to 
Paragraphs 4.2, 6.1 and 6.2 hereof).  All sums so paid by Landlord and all 
necessary incidental costs, together with interest thereon at the rate of 
Prime plus six percent (6%) per annum, but in no event less than thirteen and 
one half percent (13.5%) per annum, from the date of such payment by 
Landlord, shall be paid to Landlord forthwith on demand, as Additional Rent, 
and Landlord shall have (in addition to any other right or remedy of 
Landlord) the same rights and remedies (including, but not limited to, 
Landlord's remedies under Paragraph 13.2 hereof) in the event of nonpayment 
thereof by Tenant as in the case of default by Tenant in the payment of Rent.

     13.4. CONFESSION OF JUDGMENT IN EJECTMENT.  AFTER AT LEAST TEN (10)
DAYS' PRIOR WRITTEN NOTICE FROM LANDLORD OF LANDLORD'S INTENTION TO CONFESS
JUDGMENT IN EJECTMENT, INCLUDING COPIES OF PLEADINGS TO BE FILED IN ANY SUCH
EJECTMENT ACTION, TENANT, FULLY COMPREHENDING THE RELINQUISHMENT OF CERTAIN
RIGHTS INCLUDING, WITHOUT LIMITATION, RIGHTS OF PREJUDGMENT NOTICE 

                                         -26-
<PAGE>

                                                                         LOT C

AND HEARING AND POST-JUDGMENT NOTICE AND HEARING BEFORE EXECUTION, AUTHORIZES
AND EMPOWERS ANY ATTORNEY OF ANY COURT OF RECORD WITHIN THE UNITED STATES, TO
APPEAR FOR TENANT, AND FOR ANY OTHER PERSON CLAIMING UNDER, BY OR THROUGH
TENANT, AND CONFESS JUDGMENT IN EJECTMENT FORTHWITH AGAINST TENANT AND SUCH
OTHER PERSON AND IN FAVOR OF LANDLORD, ITS SUCCESSORS AND ASSIGNS, FOR
POSSESSION OF THE LEASED PREMISES, TOGETHER WITH HEREDITAMENTS AND APPURTENANCES
AND ALL FIXTURES AND EQUIPMENT INSTALLED THEREIN, WITH RELEASE OF ALL ERRORS,
WAIVER OF STAY OF EXECUTION, AND WAIVER OF EXEMPTION BY TENANT.  NO SINGLE
EXERCISE OF THE FOREGOING WARRANTS AND POWERS OF ATTORNEY SHALL HAVE BEEN DEEMED
TO EXHAUST SUCH WARRANTS AND POWERS, WHETHER OR NOT SUCH EXERCISE SHALL BE HELD
BY ANY COURT TO BE INVALID, VOIDABLE OR VOID, BY THE WARRANTS AND POWERS SHALL
CONTINUE UNDIMINISHED AND MAY BE EXERCISED FROM TIME TO TIME AS OFTEN AS
LANDLORD, OR ITS SUCCESSORS AND ASSIGNS SHALL ELECT UPON THE OCCURRENCE OF A
DEFAULT UNDER THIS LEASE.  TENANT CONFIRMS THAT THIS IS A COMMERCIAL LEASE, THAT
TENANT WAS REPRESENTED BY COUNSEL IN TENANT'S NEGOTIATION AND EXECUTION OF THIS
LEASE, AND THAT TENANT FREELY AND VOLUNTARILY EXECUTED THIS LEASE WITH THIS
PARAGRAPH 13.4 AS A PART THEREOF.

     13.5. Waiver.

           (a)  No right or remedy herein conferred upon or reserved to Landlord
is intended to be exclusive of any other right or remedy, and every right and
remedy shall be cumulative and in addition to any other right or remedy given
hereunder or now or hereafter existing at law or equity.  The failure of
Landlord to insist upon the strict performance of any covenant or agreement or
to exercise any option, right, power or remedy contained in this Lease shall not
be construed as a waiver or relinquishment thereof for the future.  The receipt
by Landlord of any Rent, with knowledge of the breach, shall not constitute a
waiver or cure of such breach or prevent Landlord from exercising any of its
rights or remedies hereunder on account of Tenant's breach.  Landlord shall be
entitled to injunctive relief in case of the violation, or attempted or
threatened violation, of any covenant, agreement, condition or provision of this
Lease, or to a decree compelling performance of any covenant, agreement,
condition or provision of this Lease, or to any other remedy allowed by law.  If
on account of any breach or default by Tenant under the terms of this Lease,
Landlord consults or employs an attorney or attorneys concerning Tenant's
possible default under this Lease or to enforce or defend any of the Landlord's
rights or remedies under this Lease, Tenant agrees to pay, on demand, as Rent,
all reasonable attorneys, fees and costs so incurred.

                                         -27-
<PAGE>

                                                                         LOT C

           (b)  Tenant hereby waives any notice of termination or intention to
reenter provided for in any statute, or of the institution of legal proceedings
for that purpose, and in addition waives any right of redemption or reentry or
repossession, or to restore the operation of this Lease if it is terminated or
if Tenant is dispossessed by any judgment or by warrant of any court or judge in
the cases of reentry or repossession by Landlord, or in the case of expiration
of the Lease Term.  Tenant, in addition, waives any and all benefits of any and
all laws now or hereafter in force or effect exempting property of Tenant from
liability for rent or for debt.  Tenant also expressly waives:

                (i)   The benefit of all Laws, now or hereafter in force,
exempting any goods on the Leased Premises, or elsewhere, from levy or sale in
any legal proceedings taken by Landlord to enforce any rights under this Lease;

                (ii)  The right to delay execution on any real estate that 
may be levied upon to collect any amount which may become due under the terms 
and conditions of this Lease and any right to have the same appraised;

                (iii) Any and all rights of redemption granted by or under
any present or future laws in the event of Tenant being evicted or dispossessed
for any cause, or in the event of Landlord obtaining possession of the Leased
Premises, by reason of the violation by Tenant of any of the covenants or
conditions of this Lease, or otherwise; and

                (iv)  The right, if any, to three months notice and/or fifteen
(15) or thirty (30) days' notice under the Landlord and Tenant Act of 1951, as
amended.

           (c)        (i)  At the sole option of Landlord to be exercised 
only by written notice to Tenant at any time and from time to time, Landlord 
may elect to eliminate from this Lease, permanently or temporarily, 
Subparagraph 13.1(g) or Subparagraph 13.1(h), or both of them.

                (ii)  At the sole option of Landlord to be exercised only by
written notice to Tenant at any time and from time to time, Landlord may elect
to eliminate from this Lease, permanently or temporarily, Subparagraph 13.2(f)
and all other references to the Trust Agreement.

     13.6. Late Charge.  In the event any amount of Base Annual Rent or 
Additional Rent shall remain unpaid for five (5) calendar days after such 
amount becomes due, Tenant shall pay Landlord, without notice or demand, a 
late charge equal to two percent (2%) of such overdue amount to partially 
compensate Landlord for its administrative costs in connection with such 
overdue payment; which administrative costs Tenant expressly acknowledges are 
reasonable and do not constitute a penalty.

                                         -28-
<PAGE>

                                                                         LOT C

     13.7. Bankruptcy or Insolvency.

           (a)  In the event that Tenant shall become a Debtor under Chapter 
7 of the Bankruptcy Code (hereinafter defined), and the Trustee or Tenant 
shall elect to assume this Lease for the purpose of assigning the same or 
otherwise, such election and assignment may only be made if all of the terms 
and conditions of Subparagraph 13.7(b) and Subparagraph 13.7(d) are 
satisfied.  If such Trustee shall fail to elect or assume this Lease within 
sixty (60) days after the filing of the petition or such later date as shall 
be approved by the Bankruptcy Court, not to exceed ninety (90) days, this 
Lease shall be deemed to have been rejected.  Landlord shall be thereupon 
immediately entitled to possession of the Leased Premises without further 
obligation to Tenant or Trustee, and this Lease shall be cancelled, but 
Landlord's right to be compensated for damages in such liquidation proceeding 
shall survive.

           (b)  In the event that a petition for reorganization or adjudgment of
debts is filed concerning Tenant under Chapters 11 or 13 of the Bankruptcy Code,
or a proceeding is filed under Chapter 7 of the Bankruptcy Code and is
transferred to Chapters 11 or 13, the Trustee or Tenant, as
Debtor-In-Possession, must elect to assume this Lease within sixty (60) days
from the date of the filing of the petition under Chapters 11 or 13 or such
later date as shall be approved by the Bankruptcy Court, not to exceed ninety
(90) days, or the Trustee or Debtor-In-Possession shall be deemed to have
rejected this Lease.  No election by the Trustee or Debtor-In-Possession to
assume this Lease whether under Chapter 7, 11, or 13, shall be effective unless
each of the following conditions, which Landlord and Tenant acknowledge are
commercially reasonable in the context of a bankruptcy proceeding of Tenant,
have been satisfied, and Landlord has so acknowledged in writing:

                (i)  The Trustee or the Debtor-In-Possession has cured, or has
provided Landlord adequate assurance (as defined in Subparagraph 13.7(b)(v)
below) that:

                     (A)  Within ten (10) days from the date of such assumption
the Trustee or Debtor in Possession will cure all monetary defaults under this
Lease; and

                     (B)  Within thirty (30) days from the date of such
assumption the Trustee or Debtor in Possession will cure all non-monetary
defaults under this Lease.

                (ii)  The Trustee or the Debtor-In-Possession has 
compensated, or has provided to Landlord adequate assurance (as defined 
below) that, within ten (10) days from the date of assumption, Landlord will 
be compensated for any pecuniary loss incurred by Landlord arising from the 
default of Tenant, the Trustee, or the Debtor-In-Possession as recited in 
Landlord's written statement of pecuniary loss sent to the Trustee or 
Debtor-In-Possession.

                                         -29-
<PAGE>

                                                                         LOT C

                (iii) The Trustee or the Debtor-In-Possession has provided
Landlord with adequate assurance of the future performance of each of Tenant's,
Trustee's or Debtor-In-Possession obligations under this Lease; provided,
however, that:

                     (A)  If not otherwise deposited with Landlord, the Trustee
or Debtor-In-Possession shall also deposit with Landlord, as security for the
timely payment of Rent, an amount at least equal to a quarterly installment of
Base Annual Rent (as well as the payments described in Subparagraph
13.7(b)(iii)(C) below) and other monetary charges accruing under this Lease;

                     (B)  If not otherwise required by the terms of this Lease,
the Trustee or Debtor-In-Possession shall also pay in advance on the date Base
Annual Rent is payable one quarter (1/4) of Tenant's annual obligations under
this Lease for Real Property Taxes, insurance and similar charges;

                     (C)  From and after the date of the assumption of this
Lease, the Trustee or Debtor-In-Possession shall pay all Base Annual Rent,
Additional Rent, and other amounts payable by Tenant as they become due under
this Lease; and

                     (D)  The obligations imposed upon the Trustee or
Debtor-In-Possession shall continue with respect to Tenant or any assignee of
this Lease after the completion of bankruptcy proceedings.

                (iv) The assumption of the Lease will not breach any 
provision in any other lease, mortgage, financing agreement or other 
agreement by which Landlord is bound relating to the Leased Premises.

                (v)  For purposes of this Subparagraph 13.7(b), Landlord and
Tenant acknowledge that, in the context of a bankruptcy proceeding of Tenant, at
a minimum adequate assurance, shall mean:

                         (1)  The Trustee or the Debtor-In-Possession has and
will continue to have sufficient unencumbered assets after the payment of all
secured obligations and administrative expenses to assure Landlord that the
Trustee or Debtor-In-Possession will have sufficient funds to fulfill the
obligations of Tenant under this Lease, and to keep the Leased Premises properly
staffed with sufficient employees to conduct a fully-operational, active
business on the Leased Premises; and

                         (2)  If defaults referred to in Paragraph
13.7(b)(i)(a)(B) above are not cured within the time periods set forth therein,
the Bankruptcy Court shall have entered an order segregating sufficient cash
payable to Landlord or the Trustee or Debtor-In-Possession shall have granted a
valid and perfected first lien and 

                                         -30-
<PAGE>

                                                                         LOT C

security interest or mortgage in property of Tenant, Trustee or
Debtor-In-Possession, or a combination of such cash, perfected first liens,
security interests or mortgages, acceptable as to value and kind to Landlord, to
secure to Landlord the obligation of the Trustee or Debtor-In-Possession to cure
the monetary and/or non-monetary defaults under this Lease.

           (c)  In the event that this Lease is assumed by a Trustee appointed
for Tenant or by Tenant as Debtor-In-Possession under the provisions of
Subparagraph 13.7(b) hereof and thereafter Tenant is liquidated or files a
subsequent Petition for reorganization or adjustment of debts under Chapters 11
or 13 of the Bankruptcy Code, then, and in either of such events, Landlord may,
at its option, terminate this Lease and all rights of Tenant hereunder, by
giving Tenant written notice of its election to so terminate, by no later than
thirty (30) days after the occurrence of either of such events.

           (d)  If the Trustee or Debtor-In-Possession has assumed this Lease
pursuant to the terms and provisions of Subparagraph 13.7(a) or (b) herein, for
the purpose of assigning (or elects to assign) Tenant's interest under this
Lease or the estate created thereby, to any other person, such interest or
estate may be so assigned only if Landlord shall acknowledge in writing that the
intended assignee has provided adequate assurance of all of the terms, covenants
and conditions of this Lease to be performed by Tenant.  For purposes of this
Subparagraph 13.7(d), Landlord and Tenant acknowledge that, in the context of a
bankruptcy proceeding of Tenant, at a minimum adequate assurance of future
performance' shall mean that each of the following conditions have been
satisfied, and Landlord has not acknowledged in writing:

                (i)   The assignee has submitted a current financial statement
audited by an independent certified public accountant which shows a net worth
and working capital in amounts determined to be sufficient by Landlord to assure
the future performance by such assignee of Tenant's obligations under this
Lease;

                (ii)  The assignee, if requested by Landlord, shall have 
obtained guarantees in form and substance reasonably satisfactory to Landlord 
from one or more persons who satisfy Landlord's standards of 
creditworthiness; and

                (iii) Landlord has obtain all consents or waivers from any
third party required under any lease, mortgage, financial arrangement or other
agreement by which Landlord is bound to permit Landlord to consent to such
assignment.

           (e)  When, pursuant to the Bankruptcy Code, the Trustee or
Debtor-In-Possession shall be obligated to pay reasonable use and occupancy
charges for the use of the Leased Premises or any portion thereof, such charges
shall not be less than the Base Annual Rent, Additional Rent and other amounts
payable by Tenant under this Lease.

                                         -31-
<PAGE>

                                                                         LOT C

           (f)  Neither Tenant's interest in this Lease, nor any lesser interest
of Tenant herein, nor any estate of Tenant hereby created, shall pass to any
trustee, receiver, assignee for the benefit of creditors, or any other person or
entity, or otherwise by operation of law under the laws of any state having
jurisdiction of the person or property of Tenant unless Landlord shall consent
to such transfer in writing.  No acceptance by Landlord of rent or any other
payments from any such trustee, receiver, assignee, person or other entity shall
be deemed to have waived, nor shall it waive the need to obtain Landlord's
consent of Landlord's right to terminate this Lease for any transfer of Tenant's
interest under this Lease without such consent.

           (g)  As used in this Article XIII, 'Bankruptcy Code" shall mean the
Bankruptcy Code of the United States of America, as amended from time to time. 
Capitalized terms used in this Article XIII and not defined elsewhere in this
Lease shall have the meanings given to such terms in the Bankruptcy Code.  If
the Bankruptcy Code imposes shorter periods of time on actions or decisions by
Tenant, Trustees or Debtors-In-Possession than are imposed by this Article XIII
or imposes more stringent requirements on Tenant, Trustees, or
Debtors-In-Possession than are imposed by this Article XIII, such shorter
periods of time and more stringent requirements shall be applicable under this
Article XIII.  Nothing in this Subparagraph 13.7 shall limit Landlord's rights
and remedies otherwise set forth in this Lease.


                                 ARTICLE XIV

                          ASSIGNMENT AND SUBLETTING

     14.1. Assignment and Subletting By Tenant.  The following provisions shall 
apply to any assignment or subletting by Tenant:

           (a)  Tenant shall not assign or encumber its interest in this Lease,
whether voluntarily or by operation of law without Landlord's prior written
consent.  Any attempted assignment or encumbrance without Landlord's prior
written consent shall be voidable and, at Landlord's election, shall constitute
a default by Tenant hereunder.  Tenant shall have the right to sublease the
Leased Premises, or any portion thereof, without Landlord's consent and shall
provide Landlord notice of the identity of a sublessee following any such
subletting.

           (b)  Tenant agrees to reimburse Landlord for all reasonable costs and
attorneys' fees incurred by Landlord in conjunction with the processing and
documentation of any assignment, transfer, change of ownership or hypothecation
of the Leased Premises or Tenant's interest in this Lease.  No assignment,
subletting, transfer, change of ownership or hypothecation shall be effective
until (i) Tenant shall have paid such costs and fees (except as to subletting);
(ii) each such assignee or transferee (excluding a subtenant) shall have agreed

                                         -32-
<PAGE>

                                                                         LOT C

in writing for the benefit of Landlord to assume, to be bound by, and to perform
the obligations of this Lease to be performed by Tenant, and (iii) an executed
copy of such sublease, assignment, encumbrance, or other agreement of transfer
shall have been delivered to Landlord.

           (c)  Consent by Landlord to one or more assignments or encumbrances 
of this Lease shall not be deemed to be a consent to any subsequent assignment 
or encumbrance.

           (d)  No subletting or assignment, even with the consent of Landlord,
shall relieve Tenant of its personal and primary obligation to pay Rent and to
perform all of the other obligations to be performed by Tenant hereunder.  The
acceptance of Rent by Landlord from any person shall not be deemed to be a
waiver by Landlord of any provision of this Lease or to be a consent to any
assignment.

           (e)  Subject to Subparagraph 14.1(a) above, if Tenant is a
corporation, any dissolution or sale of all or substantially all of its assets,
merger, consolidation or other reorganization of Tenant, shall be deemed a
voluntary assignment of Tenant's interest in this Lease.  If Tenant is a
partnership, a withdrawal or change, voluntary, involuntary or by operation of
law, of any general partner, or the dissolution of the partnership, shall be
deemed a voluntary assignment.  Notwithstanding the foregoing provisions of this
Subparagraph 14.1(e) to the contrary and subject to Tenant's compliance with the
other provisions of this Article XIV, and to the condition that Tenant is not in
default under this Lease at the time of such events, without it being deemed an
assignment or encumbrance hereunder requiring Landlord's consent, (i) Tenant
shall be permitted to effect a corporate merger, consolidation or
reorganization, provided, however, that Unisys Corporation remains the Tenant
under this Lease or (ii) if Unisys Corporation would not continue to be the
Tenant by operation of law, any such merger, consolidation or reorganization is
effected in accordance with applicable statutory provisions for merger,
consolidation or reorganization of corporations, which provide that the
liabilities of the corporation participating in such merger or consolidation are
assumed by the corporation surviving such merger or consolidation.

     14.2. Assignment By Landlord.  Landlord and its successors in interest
shall have the right to transfer their interest in the Leased Premises and this
Lease at any time and to any person or entity.  In the event of any conveyance
of the Leased Premises and assignment by Landlord of this Lease to another, the
Landlord originally named herein (and in the case of any subsequent transfer,
the transferor), from the date of such transfer, (i) shall be automatically
relieved, without any further act by any person or entity, of all liability for
the performance of the obligations of the Landlord hereunder which may accrue
after the date of such transfer, and (ii) shall be relieved of all liability for
the performance of the obligations of the Landlord hereunder which have accrued
before the date of transfer if its transferee agrees to assume and perform all
such obligations of the Landlord hereunder and such 

                                         -33-
<PAGE>

                                                                         LOT C

transferee is not substantially less solvent than Landlord.  In the event the
Landlord's interest in the Leased Premises is transferred to multiple
transferees, such transferees shall designate, by a written notice to Tenant
delivered upon such transfer, the name and address of a single person to whom
all Rent and notices to be paid or given by Tenant hereunder shall be addressed
and who shall be the sole authorized party to give notices to Tenant hereunder;
Tenant's payment of Rent to such designated person shall satisfy Tenant's
obligation to pay Rent to Landlord; Tenant's delivery of notices to such
designated person shall constitute notice to Landlord and Tenant may rely upon
notices from such designated person as being notice from Landlord.  After the
date of such transfer, the term Landlord as used herein shall mean the
transferee of such interest in the Leased Premises.


                                  ARTICLE XV
                                          
                                 TERMINATION
                                          
     15.1. Surrender of the Leased Premises.

           (a)  Immediately prior to the expiration of the Lease Term, or upon
the earlier termination of this Lease, Tenant shall remove all Trade Fixtures
(except surveillance cameras exterior to the buildings which shall remain with
the Leased Premises) and repair any damage caused by such removal and vacate and
surrender the Leased Premises to Landlord in the condition required by the terms
of this Lease.  Without limiting the generality of the foregoing, Tenant shall
surrender the Leased Premises (normal wear and tear excepted), in broom clean
condition, with all interior walls cleaned, all trash, waste, and debris
removed, all carpets cleaned, all HVAC equipment within the Leased Premises in
operating order and in good repair, and all floors cleaned, all to the
reasonable satisfaction of Landlord.  In the event there has been an event of
damage or destruction governed by Article XI, or Condemnation affecting the
Leased Premises, and Tenant has been complying with its obligations to repair
and restore pursuant to Articles XI and XII thereof and is not otherwise in
default under this Lease, Tenant may surrender the Leased Premises to Landlord
without completion of such repair or restoration, and shall have no further
obligations with respect thereto provided that Tenant, upon the termination of
the Lease Term, relinquishes any rights to and assigns to Landlord all of
Tenant's interest, if any, in insurance proceeds and pays to Landlord the amount
of any insurance deductible to the extent such deductible amount has not already
been expended on such repair or restoration, or any portion of an Award to which
it is otherwise entitled under Article XII to the extent that it has not already
been expended on such repairs or restoration.  If Landlord so requests, Tenant
shall, at its sole cost and prior to the expiration or earlier termination of
this Lease, remove any Leasehold Improvements not constructed or installed in
compliance with Paragraph 5.1 or Paragraph 6.2 and repair all damage caused by
such removal.  If the Leased Premises are not so surrendered at the termination
of this Lease, Tenant shall be liable to Landlord for all costs 

                                         -34-
<PAGE>

                                                                         LOT C

incurred by Landlord in returning the Leased Premises to the required condition,
plus interest, from the date of demand for payment of such costs to the date
paid, on all costs incurred at the rate of Prime plus six percent (6%) per
annum, but in no event less than thirteen and one half percent (13.5%) per
annum.  Tenant shall indemnify Landlord against loss or liability resulting from
delay by Tenant in so surrendering the Leased Premises, including, without
limitation, any claims made by any succeeding tenant or losses to Landlord due
to lost opportunities to lease to succeeding tenants.

           (b)  Upon expiration or earlier termination of the Lease Term, Tenant
shall (i) remove so much or all of the raised flooring and cabling, except that
portion installed over depressed slab, and so much or all of the UPS system and
Halon systems, as may be requested by Landlord; (ii) deliver to Landlord the
following documents or records - all computer CAD plans, building plans and
specifications and repair and maintenance files; and (iii) have roof repatched
and warranted by a professional roofer acceptable to Landlord in all areas where
the roof is violated or otherwise affected by the removal of Tenant's property
from any roof.  Tenant shall clean such area after removal.  All such removal
and cleaning shall be at Tenant's sole cost and expense.

     15.2. Holding Over.  Unless earlier terminated in accordance with this
Lease or duly extended in accordance with this Lease, this Lease shall terminate
without further notice at the expiration of the Lease Term.  Any holding over by
Tenant after termination of this Lease shall not constitute a renewal or
extension of the Lease or give Tenant any rights in or to the Leased Premises. 
Any holding over after such expiration with the consent of Landlord shall be
construed to be a tenancy from month to month on the same terms and conditions
herein specified insofar as applicable except that the monthly rent shall equal
one twelfth (1/12) of the higher of one hundred fifty percent (150%) of the Base
Annual Rent in effect during the last month prior to such termination or the
then current Fair Market Rent.  The current Fair Market Rent shall be determined
by agreement between Landlord and Tenant within thirty (30) days following the
expiration of the Lease Term.  In the absence of such agreement as to the Fair
Market Rent, it shall be determined as follows:

           (a)  Each party shall appoint an Appraiser within fifteen (15) days
after notice of failure to agree given by one party to the other, and shall
advise the other party of such appointment.  On the failure of either party so
to appoint an Appraiser, and to advise the other party of such appointment, the
person who has been appointed as Appraiser may appoint a second Appraiser to
represent the party in default.

           (b)  The two (2) Appraisers appointed in either manner shall then
proceed to establish the Base Annual Rent for each month of the hold over
period.  In the event of their inability to agree upon the Base Annual Rent for
each month of the hold over period within thirty (30) days after their
appointment, then Landlord shall appoint a third Appraiser, provided however,
that if the difference between the amounts respectively determined by the 

                                         -35-
<PAGE>

                                                                         LOT C

two (2) Appraisers is not greater than an amount equal to ten percent (10%) of
the higher of the two (2) amounts so determined, then the Base Annual Rent for
each month of the hold over period in question shall be the mean of such two
amounts, and it shall not be necessary to appoint a third (3rd Appraiser).  In
the event that Landlord fails to appoint a third (3rd) Appraiser within fifteen
(15) days, then, in such event, the two Appraisers appointed by the parties
pursuant to 15.2(a) above shall, by agreement, appoint the third Appraiser.

           (c)  In the event a third Appraiser is appointed, such Appraiser's
determination of Base Annual Rent for each month of the hold over period shall
be final so long as it is within the limits of the appraisals established by the
Appraisers appointed by the parties pursuant to 15.2(a) above.  If the third
Appraiser's appraisal is not within such limits, the determination of Base
Annual Rent made by an Appraiser appointed pursuant to 15.2(a) above which is
the closest to that of the third Appraiser shall control.

           (d)  Landlord and Tenant shall divide equally the charges imposed by
Appraisers selected under this Paragraph 15.2.


                                 ARTICLE XVI

                            INTENTIONALLY OMITTED


                                 ARTICLE XVII

                              GENERAL PROVISIONS

     17.1. Financial Information.  Tenant shall furnish to Landlord:

           (a)  As soon as available and in any event within forty-five (45) 
days after the end of each quarterly accounting period in each fiscal year of 
Tenant, copies of a consolidated balance sheet of Tenant and its consolidated 
subsidiaries as of the last day of such quarterly accounting period, and 
copies of the related consolidated statements of income and of changes in 
shareholders' equity and in financial position of Tenant and its consolidated 
subsidiaries for such quarterly accounting period and for the elapsed portion 
of the current fiscal year ended with the last day of such quarterly fiscal 
year ended with the last day of such quarterly accounting period, all in 
reasonable detail and with appropriate notes, if any, and stating in 
comparative form the figures for the corresponding dates and periods in the 
previous fiscal year, all prepared in accordance with the generally accepted 
accounting practice consistently applied, certified as complete and correct 
in all material respects by the chief financial officer of Tenant (subject to 
year-end audit adjustments), and otherwise in form satisfactory to Landlord;

                                         -36-
<PAGE>

                                                                         LOT C

           (b)  As soon as available and in any event within ninety (90) days
after the end of each fiscal year of Tenant, copies of a consolidated balance
sheet of Tenant and its consolidated subsidiaries as of the end of such fiscal
year, and copies of the related consolidated statements of income and of changes
in shareholders' equity and in financial position of Tenant and its consolidated
subsidiaries for such fiscal year, all in reasonable detail and with appropriate
notes, if any, and all prepared in accordance with generally accepted accounting
practice consistently applied and stating in comparative form the corresponding
figures as of the end of and for the previous fiscal year, and accompanied by an
opinion or report thereon, in scope and substance satisfactory to Landlord, by
Ernst Young & Company or such other firm of independent certified public
accountants of recognized standing in the financial community as may be selected
by Tenant and reasonably acceptable to Landlord and otherwise in a form
satisfactory to Landlord;

           (c)  Notwithstanding the requirements set forth in Paragraphs 
17.1(a), 17.1(b) and 17.1(d), Tenant need not comply with such requirements 
if the stock of Tenant is traded on the New York Stock Exchange, or Tenant 
shall be required to file periodic reports with the Securities and Exchange 
Commission under the Securities Exchange Act of 1934, as amended, but Tenant 
shall be required to deliver to Landlord all financial information and 
reports as are sent to Tenant's shareholders at the same time as such 
information or reports are sent to Tenant's shareholders.

           (d)  Concurrently with each of the financial statements furnished
pursuant to-Subparagraphs 17.1(a) or 17.1(b) above, a certificate signed by the
chief financial officer of Tenant, to the effect that in the opinion of such
officer, based upon a review made under his or her supervision, Tenant has
performed and observed all of, and is not in default in the performance or
observance of any of, its obligations under this Lease (or, if such be not the
case, specifying all such defaults and failures, and the nature thereof, of
which such officer may have knowledge and the action proposed to be taken in
respect thereof);

           (e)  Copies of all regular and periodic reports or other reports 
which Tenant shall make or be required to file with (i) the Securities and 
Exchange Commission or (ii) any other federal or state regulatory agency or 
with any municipal or other local body which relate to the Leased Premises.

     17.2. Landlord's Right to Enter.  Tenant shall permit Landlord and its
agents to enter the Leased Premises at all reasonable times, upon not less than
one (1) business day's notice, for the purpose of (i) inspecting the same; (ii)
posting notices of nonresponsibility; (iii) exhibiting the Leased Premises to
prospective purchasers and/or lenders; (iv) exhibiting the Leased Premises to
prospective tenants within twenty-four (24) months prior to the expiration of
the Lease Term; (v) determining whether Tenant is performing all its obligations
hereunder; (vi) discharging Tenant's obligation (including the obligations to
repair and maintain the Leased Premises) when Tenant has failed to do so after
written notice from 

                                         -37-
<PAGE>

                                                                         LOT C

Landlord and the expiration of applicable cure periods; and/or (vii) within
twenty-four (24) months of the expiration of the Lease Term, placing upon the
Leased premises ordinary "for leases signs at places where Tenant shall
reasonably select.  Tenant may elect to escort Landlord at all such times, and
Landlord agrees to comply with Tenant's security requirements with respect to
the Leased Premises.  Landlord shall not use, copy or publish any of Tenant's
confidential or proprietary information obtained by Landlord in any such entry
upon the Leased Premises, and Landlord shall maintain all such information in
confidence.

     17.3. Subordination.

           (a)  Subject to Subparagraph 17.3(b), this Lease is subject and
subordinate, in lien and operation, to any underlying leases, mortgages, other
title exceptions or objections, which affect the Leased Premises and are of
public record as of the Commencement Date, and to all renewals, modifications,
consolidations, supplements, replacements and extensions thereof, and all
advances made or to be made thereunder for the full amount of such advances and
without regard for the time or character of such advances.  This Lease is also
subject and subordinate to any and all future mortgages affecting the Leased
Premises which may hereafter be executed and placed of public record by Landlord
after the Commencement Date, or any renewals, modifications, consolidations,
supplements, replacements or extensions thereof, for the full amount of all
advances made or to be made thereunder and without regard to the time or
character of such advances.  Without limitation on the foregoing provisions of
this Section 17.3(a), this Lease is subject and subordinate to that certain
Mortgage dated June 30, 1992 from Landlord to Blue Bell Funding, Inc., as
mortgagee, now held by United States Trust Company of New York, as trustee,
mortgagee, and this Lease has been assigned as collateral security by Landlord
to United States Trust Company of New York, as trustee, mortgagee under such
Mortgage.  Tenant agrees, within ten (10) days after Landlord's written request
therefor, to execute, acknowledge and deliver to Landlord any and all documents
or instruments requested by Landlord or any Lender as may be reasonably
necessary or proper to assure the subordination of this Lease to any such
mortgage provided that such documents and instruments shall not impose upon
Tenant obligations other than those set forth in this Lease.  However, if the
lessor under any such lease or any Lender holding any such mortgage, shall
advise Landlord that it desires or requires this Lease to be prior and superior
thereto, then, upon written request of Landlord to Tenant, Tenant shall promptly
execute, acknowledge and deliver any and all documents or instruments which
Landlord or such lessor or Lender deems necessary or desirable to make this
Lease prior thereto in lien and operation.

           (b)  Any automatic subordination of this Lease to any mortgage 
held by a Lender as provided in Subparagraph 17.3(a), shall be subject to and 
conditioned upon Landlord's obtaining from each Lender and delivering a copy 
thereof to Tenant an agreement (the "Nondisturbance and Subordination 
Agreement") providing that, even though this Lease 

                                         -38-
<PAGE>

                                                                         LOT C

is subordinate as set forth in Subparagraph 17.3(a), so long as Tenant is not in
default under the terms of this Lease, insurance proceeds will be disbursed in
accordance with Paragraph 11.1 hereof, notwithstanding anything in any such
mortgage to the contrary, any action or proceeding to foreclose a mortgage held
by such Lender will not result in the cancellation or termination of this Lease,
and that in the event of the sale of the Leased Premises as the result of any
action or proceeding to foreclosure any such mortgage, this Lease shall continue
in full force and effect as a direct lease between Tenant and the then owner of
the Leased Premises upon all of the terms, covenants and conditions in this
Lease.  So long as the Nondisturbance and Subordination Agreement contains the
Tenant protections provided in the immediately preceding sentence, the
Nondisturbance and Subordination Agreement shall be in form and content
reasonably acceptable to the applicable Lender and may contain, among other
provisions, the following terms and conditions:  Tenant's confirmation of the
subordination of the Lease to the mortgage held by the Lender; the agreement by
Tenant that neither the Lender nor any purchaser at any foreclosure sale shall
be liable for any act or omission of Landlord under the Lease, or subject to any
offsets or defenses which Tenant may have at any time against Landlord;
providing that Lender shall not be bound by any Rent which Tenant may have paid
to Landlord for more than the current quarterly rental payment period; providing
that Lender shall not be bound by any amendment or modification of the Lease
made without Lender's consent, and; providing that Tenant agrees that any
Lender, or any other entity or person which becomes the purchaser at foreclosure
sale shall be liable only for the performance of the obligations of the Landlord
under the Lease which arise and accrue during the period of such Lender's,
entities' or person's ownership of the Leased Premises.

     17.4. Tenant's Attornment.  Tenant shall attorn (i) to any purchaser of
the Leased Premises at any foreclosure sale or private sale conducted pursuant
to any security instrument encumbering the Leased Premises, (ii) to any grantee
or transferee designated in any deed given in lieu of foreclosure, or (iii) to
the lessor under any underlying ground lease in effect on the date hereof should
such ground lease be terminated.

     17.5. Estoppel Certificates.  At all times during the Lease Term, Tenant 
agrees, following any request by Landlord, to promptly execute and deliver to 
Landlord an estoppel certificate (i) certifying that this Lease is unmodified 
and in full force and effect, or, if modified, stating the nature of such 
modification and certifying that this Lease, as so modified, is in full force 
and effect, (ii) stating the date to which the Rent is paid in advance, if 
any, (iii) acknowledging that there are not, to Tenant's knowledge, any 
uncured defaults on the part of Landlord hereunder, or if there are uncured 
defaults on the part of Landlord, stating the nature of such uncured 
defaults, and (iv) certifying such other information about the Lease as may 
be reasonably required by Landlord.  Tenant's failure to deliver an estoppel 
certificate (or other response to Landlord's request therefor, if such 
certificate cannot practicably be given) within ten (10) business days after 
delivery of Landlord's request therefor (unless such request was not actually 
received by Tenant) shall be a

                                         -39-
<PAGE>

                                                                         LOT C

conclusive admission by Tenant that, as of the date of the request for such
statement, (i) this Lease is unmodified except as may be represented by Landlord
in said request and is in full force and effect, (ii) there are no uncured
defaults in Landlord's performance, and (iii) no Rent has been paid in advance.

     17.6. Intentionally Omitted.

     17.7. Determination of Fair Market Rent for Extension Periods.  The
base Annual Rent for the first year of either the First Extension Period or the
Second Extension Period shall be ninety percent (90%) of the annual Fair Market
Rent for the Leased Premises for the first year of the applicable Extension
Period, but not less than the amounts set forth on Exhibit B for the first year
of the applicable Extension Period.  If Landlord and Tenant cannot agree on such
Fair Market Rent, the Fair Market Rent shall be determined in accordance with
the following procedure:

           (a)  Each party shall appoint an Appraiser within fifteen (15) days
after notice of failure to agree given by one party to the other. and shall
advise the other party of such appointment.  On the failure of either party so
to appoint an Appraiser, and to advise the other party of such appointment, the
person who has been appointed as Appraiser may appoint a second Appraiser to
represent the party in default.

           (b)  The two (2) Appraisers appointed in either manner shall then
proceed to establish the Base Annual Rent for the Extension Period in question
based on the Fair Market Rent of the Leased Premises.  In the event of their
inability to agree upon the Base Annual Rent for the Extension Period in
question within thirty (30) days after their appointment, then Landlord shall
appoint a third Appraiser, provided however, that if the difference between the
amounts respectively determined by the two (2) Appraisers is not greater than an
amount equal to ten percent (10%) of the higher of the two (2) amounts so
determined, then the Base Annual Rent for the Extension Period in question shall
be the mean of such two amounts, and it shall not be necessary to appoint a
third (3rd) Appraiser.  In the event that Landlord fails to appoint a third
(3rd) Appraiser within fifteen (15) days, then, in such event, the two
Appraisers appointed by the parties pursuant to Subparagraph 17.1(a) above
shall, by agreement, appoint the third Appraiser.

           (c)  In the event a third Appraiser is appointed, such Appraiser's
determination of Base Annual Rent for the Extension Period in question shall be
final so long as it is within the limits of the appraisals established by the
Appraisers appointed by the parties pursuant to Subparagraph 17.7(a) above.  If
the third Appraiser's appraisal is not within such limits, the determination of
Base Annual Rent made by an Appraiser appointed pursuant to Subparagraph 17.7(a)
above which is the closest to that of the third Appraiser shall control.

                                         -40-
<PAGE>

                                                                         LOT C

           (d)  Landlord and Tenant shall divide equally the charges imposed by
Appraisers selected under this Paragraph 17.7.

     17.8. Notices.  All notices, approvals, consents, requests, and other
communications required or permitted to be given under this Lease shall be in
writing and shall be deemed given when delivered personally, or when delivered
by any nationally recognized next day delivery or courier service addressed to
the party for which the item is intended as follows:

           To Tenant:             Unisys Corporation 
                                  Township Line and Union Meeting Roads
                                  Blue Bell, PA  19424-0001
                                  Attn:  Real Estate Department

           With a copy to:        Unisys Corporation
                                  Township Line and Union Meeting Roads
                                  Blue Bell, PA   19424-0001
                                  Attn:  Office of the General Counsel

           To Landlord:           Blue Bell Investment Company, L.P. 
                                  c/o The Shidler Group
                                  One Logan Square, Suite 1105
                                  Philadelphia, PA  19103

           With a copy to:        F. Michael Wysocki, Esquire
                                  Saul, Ewing, Remick & Saul
                                  3800 Centre Square West
                                  Philadelphia, PA  19102

     Landlord and Tenant shall each have the right from time to time, to specify
as their proper addresses for purposes of notice under this Lease any other
address upon the giving of due notice hereunder.

     17.9. Corporate Authority.  Tenant represents and warrants that each
individual executing this Lease on behalf of Tenant is duly authorized to
execute and deliver this Lease on behalf of Tenant is duly authorized to execute
and deliver this Lease on behalf of such corporation in accordance with its
charter and by-laws and that this Lease is binding upon Tenant in accordance
with its terms.  Tenant shall, within thirty (30) days after execution of this
Lease, deliver to Landlord a certified copy of the resolution of its board of
directors authorizing or ratifying the execution of this Lease, or of the
general corporate authorization, which evidences the authority for the execution
of this Lease.

                                         -41-
<PAGE>

                                                                         LOT C

     17.10. Brokerage Commissions.  Tenant and Landlord each warrants to the
other that it has not had any dealings with any real estate brokers or salesmen
or incurred any obligations for the payment of real estate brokerage commissions
or finder's fees which would be earned or due and payable by reason of the
execution of this Lease, and each agrees to indemnify the other for its breach
of its warranty under this Paragraph 17.10.

     17.11. Entire Lease.  This Lease, the Exhibits attached to this Lease
(which by this reference are incorporated herein), the Environmental Indemnity
and the Trust Agreement are the entire agreement between the parties respecting
the subject matter covered by such documents.  Tenant acknowledges that neither
Landlord nor Landlord's agent(s) has made any representation or warranty as to
(i) whether the Leased Premises may be used for Tenant's intended use under
existing Law or (ii) the suitability of the Leased Premises for the conduct of
Tenant's business or the condition of any Improvements.  Tenant expressly waives
all claims for damage by reason of any statement, representation, warranty,
promise or other agreement of Landlord or Landlord's agent(s), if any, not
contained in this Lease or in any amendment hereto.  No amendment to this Lease
shall be binding unless in writing and signed by the parties hereto.  Landlord
and Tenant acknowledge that the First Lease is terminated as of the date of this
Lease, except for any obligations of Tenant which by the terms of the First
Lease survive the termination of the First Lease.

     17.12. Limited Liability of Landlord.  The liability of Landlord with
respect to this Lease shall be limited to and enforceable only out of Landlord's
assets.  No partners of Landlord shall have any liability hereunder.

     17.13. Governing Law.  This Lease shall be governed by the laws of the
Commonwealth of Pennsylvania.

     17.14. Quiet Enjoyment.  Tenant, upon paying all Base Annual Rent, all
Additional Rent, and all other amounts provided for in this Lease and not being
in default under this Lease, shall peaceably and quietly have and enjoy the
Leased Premises throughout the Lease Term without hindrance by Landlord or by
anyone claiming by, through or under Landlord, subject, however, to the
provisions, exceptions, reservations, and conditions of this Lease.

     17.15. Successors and Assigns.  Subject to the provisions of this
Agreement, this Lease shall be binding upon, and inure to the benefit of the
permitted successors and assigns of Landlord and Tenant.

     17.16. Tenant's Obligations to Lenders.  Any obligation of Tenant to
comply with any requirement of a Lender is subject to Landlord's prior
notification to Tenant of such Lender's identity and address.

                                         -42-
<PAGE>

                                                                         LOT C


          IN WITNESS WHEREOF, Landlord and Tenant have executed this Lease with
the intent to be legally bound thereby, as of the date first above written.

                              BLUE BELL INVESTMENT COMPANY, L.P. 
                              by its sole General Partner, 
                              Strategic Facility Investors, Inc.


Attest:                       By:
       -------------------       ---------------------------
                                   Clay W. Hamlin, III
                                   President


                              UNISYS CORPORATION, 
                              a Delaware corporation


Attest:                       By:
       ------------------        ---------------------------
                                   Name:
                                   Title:




                                         -43-
<PAGE>

                                                                         LOT C

                     WAIVER OF PRIOR HEARING CERTIFICATION


          Tenant acknowledges that the above Lease authorizes and empowers
Landlord, without any prior notice or a prior hearing, to cause the entry of
judgments against the undersigned for possession of the Leased Premises and
immediately thereafter, without prior notice or a prior hearing, to exercise
post-judgment enforcement and execution remedies.  Tenant acknowledges that
Tenant has agreed to waive the Tenant's rights to prior notice and a hearing
under the Constitution of the United States, the Constitution of the
Commonwealth of Pennsylvania and all other applicable state and federal laws, in
connection with Landlord's ability to cause the entry of judgments against the
Tenant and immediately thereafter exercise Landlord's post-judgment enforcement
and execution remedies (which may include, without limitation, removal of the
Tenant from the Leased Premises by law enforcement officers).  Tenant's counsel
has reviewed the legal impact of this waiver with the Tenant and Tenant
acknowledges that Tenant has freely waived such rights as an inducement to
Landlord to enter into this Lease.  The individual executing this Certification
warrants that he or she is authorized to agree to such waiver on behalf of
Tenant.

                                   TENANT:

                                   UNISYS CORPORATION, a Delaware corporation


Date:____________, 19____               By:
                                           -------------------------------
                                        Name:
                                             -----------------------------
                                        Title:
                                              ----------------------------

<PAGE>

                                                                         LOT C

                                   EXHIBIT B
                                       
                                 RENT SCHEDULE

Annual Rent

The Base Annual Rent payable during the initial Lease Term shall be as follows:

For the period from the Commencement Date, April 1, 1997           $514,237.50
through June 30, 1997  

For the period from July 1, 1997 through June 30, 1998           $2,096,951.00

For the period from July 1, 1998 through June 30, 1999           $2,123,513.00

For the period from July 1, 1999 through June 30, 2000           $2,150,891.00

For the period from July 1, 2000 through June 30, 2001           $2,193,339.00

For the period from July 1, 2001 through June 30, 2002           $2,236,636.00

For the period from July 1, 2002 through June 30, 2003           $2,280,799.00

For the period from July 1, 2003 through June 30, 2004           $2,325,846.00

For the period from July 1, 2004 through June 30, 2005           $2,371,793.00

For the period from July 1, 2005 through June 30, 2006           $2,418,660.00

For the period from July 1, 2006 through June 30, 2007           $2,466,483.00

For the period from July 1, 2007 through June 30, 2008           $2,515,223.00

For the period from July 1, 2008 through June 30, 2009           $2,564,958.00

Annual Extension Rent

The Base Annual Rent for the first year (July 1, 2009 through June 30, 2010) of
the First Extension Period shall be ninety percent (90%) of Fair Market Rent,
but not less than $3,096,353.00.



<PAGE>

                                                                         LOT C

Beginning the first day of the second year of the First Extension Period and on
each annual anniversary thereafter, the Base Annual Rent shall be increased by
two percent (2%) per annum.

The Base Annual Rent for the first year July 1, 2015 through June 30, 2016 of
the Second Extension Period shall be ninety percent (90%) of Fair Market Rent,
but not less than $3,418,624.00.

Beginning the first day of the second year of the Second Extension Period and on
each annual anniversary thereafter, the Base Annual Rent shall be increased by
two percent (2%) per annum.

If Landlord and Tenant cannot mutually agree on the Fair Market Rent for the
first year of the Leased Premises for either the First Extension Period or the
Second Extension Period, the Fair Market Rent for the Leased Premises for the
first year shall be determined in accordance with Paragraph 17.7 of the Lease to
which this is an Exhibit.



<PAGE>

                                                                  Exhibit 10.9


- ------------------------------------------------------------------------------
- ------------------------------------------------------------------------------


                                 AMENDED AND RESTATED
                                        LEASE




                           SOUTH BRUNSWICK INVESTORS, L.P.


                                       LANDLORD


                                         and


                     INTERNATIONAL BUSINESS MACHINES CORPORATION


                                        TENANT













Dated:  August 11, 1995

- ------------------------------------------------------------------------------
- ------------------------------------------------------------------------------

<PAGE>

                                  TABLE OF CONTENTS

                                                                          Page
                                                                          ----

BASIC LEASE INFORMATION.................................................   -1-

PARTIES.................................................................   -1-

INTRODUCTION............................................................   -1-

ARTICLE ONE
     PREMISES...........................................................   -1-
          Section 1.01.  LEASE OF PREMISES..............................   -1-
          Section 1.02.  LEASED PREMISES................................   -1-
          Section 1.03.  COMMON BUILDINGS FACILITIES....................   -2-

ARTICLE TWO
     TERM...............................................................   -2-
          Section 2.01.  INITIAL TERM...................................   -2-
          Section 2.02.  [Intentionally Omitted]........................   -2-
          Section 2.03.  EXTENDED TERM..................................   -2-
          Section 2.04.  EARLY TERMINATION IN EXTENDED TERM.............   -3-
          Section 2.05.  TERM OF THIS LEASE.............................   -3-

ARTICLE THREE
     RENT AND ADDITIONAL RENT...........................................   -3-
          Section 3.01.  ANNUAL RENT....................................   -3-
          Section 3.02.  EXTENDED TERM RENT.............................   -3-
          Section 3.03.  ADDITIONAL RENT................................   -3-
          Section 3.04.  OPERATING EXPENSES.............................   -4-
          Section 3.05.  REAL ESTATE TAXES..............................   -8-
          Section 3.06.  ADJUSTMENT TO FIXED ANNUAL RENT................   -9-
          Section 3.07.  COMPUTATION AND BILLING........................  -10-
          Section 3.08.  TAX CONTEST....................................  -11-
          Section 3.09.  PLACE FOR PAYMENT..............................  -12-

ARTICLE FOUR
     ACCEPTANCE.........................................................  -12-

ARTICLE FIVE
     LANDLORD'S TITLE...................................................  -12-
          Section 5.01.  LANDLORD'S REPRESENTATIONS REGARDING TITLE 
                         AND USE........................................  -12-

                                      -i-
<PAGE>

ARTICLE SIX
     SERVICES...........................................................  -12-
          Section 6.01.  SERVICES PROVIDED BY LANDLORD..................  -12-
          Section 6.02.  LANDLORD'S FAILURE TO PROVIDE SERVICES.........  -14-

ARTICLE SEVEN
     PARKING............................................................  -14-
          Section 7.01.  TENANT'S PARKING SPACES........................  -14-
          Section 7.02.  VISITORS' SPACES...............................  -14-

ARTICLE EIGHT
     USE OF LEASED PREMISES.............................................  -14-
          Section 8.01.  GENERAL USES...................................  -14-
          Section 8.02.  SPECIAL USES...................................  -14-

ARTICLE NINE
     REPAIRS AND MAINTENANCE............................................  -15-
          Section 9.01.  LANDLORD'S REPAIRS.............................  -15-
          Section 9.02.  TENANT'S REPAIRS...............................  -15-
          Section 9.03.  LANDLORD'S FAILURE TO MAKE REPAIRS.............  -16-
          Section 9.04.  EMERGENCY REPAIRS..............................  -16-

ARTICLE TEN
     FIRE AND OTHER CASUALTY - INSURANCE................................  -16-
          Section 10.01.   DAMAGE OR DESTRUCTION........................  -16-
          Section 10.02.   CASUALTY INSURANCE...........................  -17-

ARTICLE ELEVEN
     INDEMNIFICATION....................................................  -19-

ARTICLE TWELVE
     CONDEMNATION.......................................................  -19-
          Section 12.01.   TAKING - LEASE ENDS..........................  -19-
          Section 12.02.   TAKING - LEASE CONTINUES.....................  -19-
          Section 12.03.   TEMPORARY TAKING.............................  -20-
          Section 12.04.   LANDLORD'S AWARD.............................  -20-
          Section 12.05.   TENANT'S AWARD...............................  -20-
          Section 12.06.   RESTORATION BY LANDLORD......................  -20-
          Section 12.07.   DEFINITIONS..................................  -20-

ARTICLE THIRTEEN
     ALTERATIONS AND IMPROVEMENTS.......................................  -20-
          Section 13.01.   TENANT'S CHANGES - NO APPROVAL...............  -20-
          Section 13.02.   TENANT'S CHANGES - LANDLORD'S APPROVAL.......  -21-

                                     -ii-
<PAGE>

          Section 13.03.   TENANT'S OWNED PROPERTY......................  -21-
          Section 13.04.   REMOVAL OF TENANT'S OWNED PROPERTY...........  -22-
          Section 13.05.   LANDLORD'S CHANGES - TENANT'S APPROVAL.......  -22-

ARTICLE FOURTEEN
     LANDLORD'S ACCESS..................................................  -22-

ARTICLE FIFTEEN
     COMPLIANCE WITH LAWS...............................................  -22-
          Section 15.01.   TENANT'S COMPLIANCE WITH LAWS................  -22-
          Section 15.02.   LANDLORD'S COMPLIANCE WITH LAWS..............  -22-

ARTICLE SIXTEEN
     SURRENDER OF POSSESSION............................................  -23-

ARTICLE SEVENTEEN
     SIGNS..............................................................  -24-
          Section 17.01.   TENANT'S SIGNS...............................  -24-
          Section 17.02.   PROJECT SIGN AND NAME........................  -24-
          Section 17.03.   LIMITATIONS ON LANDLORD'S RIGHTS.............  -24-
          Section 17.04.   COMPLIANCE WITH LAWS.........................  -24-

ARTICLE EIGHTEEN
     SUBORDINATION AND NON-DISTURBANCE..................................  -24-

ARTICLE NINETEEN
     MECHANICS' LIENS...................................................  -25-

ARTICLE TWENTY
     [INTENTIONALLY OMITTED]............................................  -25-

ARTICLE TWENTY-ONE
     [INTENTIONALLY OMITTED]............................................  -25-

ARTICLE TWENTY-TWO
     TENANT'S SECURITY..................................................  -25-
          Section 22.01.  LIMITED RESTRICTIONS AGAINST OTHER TENANTS....  -25-
          Section 22.02.  INCLUSION OF RESTRICTION IN OTHER LEASES AND
                          SUBLEASES.....................................  -26-
          Section 22.03.  ADVANCE CONSULTATION WITH TENANT..............  -26-

ARTICLE TWENTY-THREE
     [INTENTIONALLY OMITTED]............................................  -26-

                                       -iii-
<PAGE>

ARTICLE TWENTY-FOUR
     DEFAULT............................................................  -26-
          Section 24.01.   TENANT'S DEFAULT.............................  -26-
          Section 24.02.   DEFAULT BY LANDLORD..........................  -30-

ARTICLE TWENTY-FIVE
     HOLDOVER...........................................................  -31-

ARTICLE TWENTY-SIX
     NOTICES............................................................  -31-

ARTICLE TWENTY-SEVEN
     ASSIGNMENT AND SUBLETTING..........................................  -32-
          Section 27.01.   ASSIGNMENT OR SUBLEASE.......................  -32-
          Section 27.02.   LIABILITY OF IBM.............................  -32-

ARTICLE TWENTY-EIGHT
     EQUAL EMPLOYMENT OPPORTUNITY.......................................  -32-

ARTICLE TWENTY-NINE
     QUIET ENJOYMENT....................................................  -33-

ARTICLE THIRTY
     WAIVER.............................................................  -33-

ARTICLE THIRTY-ONE
     PARTIAL INVALIDITY.................................................  -33-

ARTICLE THIRTY-TWO
     RULES AND REGULATIONS..............................................  -33-
          Section 32.01.   TENANT'S OBLIGATION..........................  -33-
          Section 32.02.   STANDARDS APPLICABLE TO LANDLORD.............  -34-
          Section 32.03.   LANDLORD'S ENFORCEMENT.......................  -34-
          Section 32.04.   CONFLICT.....................................  -34-

ARTICLE THIRTY-THREE
     ESTOPPEL CERTIFICATES..............................................  -34-
          Section 33.01.   TENANT'S ESTOPPEL CERTIFICATE................  -34-
          Section 33.02.   LANDLORD'S ESTOPPEL CERTIFICATE..............  -34-

ARTICLE THIRTY-FOUR
     EXECUTION OF LEASE.................................................  -35-

                                          -iv-
<PAGE>

ARTICLE THIRTY-FIVE
     COUNTERPARTS.......................................................  -35-

ARTICLE THIRTY-SIX
     ANTENNA............................................................  -35-

ARTICLE THIRTY-SEVEN
     BROKER.............................................................  -36-

ARTICLE THIRTY-EIGHT
     ARBITRATION........................................................  -36-
          Section 38.01.   APPLICABILITY................................  -36-
          Section 38.02.   NOTICE AND DEMAND............................  -36-
          Section 38.03.   SELECTION OF ARBITRATOR......................  -36-
          Section 38.04.   SCOPE........................................  -37-

ARTICLE THIRTY-NINE
     EXCUSABLE DELAY....................................................  -37-

ARTICLE FORTY
     MISCELLANEOUS......................................................  -38-
          Section 40.01.   RULES OF INTERPRETATION......................  -38-
          Section 40.02.   NO EXCLUSIVE REMEDIES........................  -38-
          Section 40.03.   PROJECT CONTRACTORS AND SUPPLIERS............  -38-
          Section 40.04.   GOVERNING LAWS...............................  -38-
          Section 40.05.   NON-DISCLOSURE OF LEASE......................  -38-

ARTICLE FORTY-ONE
     MEMORANDUM OF LEASE................................................  -39-

ARTICLE FORTY-TWO
     BINDING AGREEMENT..................................................  -39-

ARTICLE FORTY-THREE
     ENVIRONMENTAL MATTERS..............................................  -39-

ARTICLE FORTY-FOUR
     [INTENTIONALLY OMITTED]............................................  -40-

ARTICLE FORTY-FIVE
     [INTENTIONALLY OMITTED]............................................  -40-

ARTICLE FORTY-SIX
     ENTIRE AGREEMENT...................................................  -40-

                                      -v-
<PAGE>

ARTICLE FORTY-SEVEN
     TERMINATION OF FIRST LEASE.........................................  -40-

SIGNATURE PAGE..........................................................  -41-

EXHIBIT A1 to A4 - Floor Plans of the Leased Premises

EXHIBIT B - Supplemental Agreement

EXHIBIT C - Heat, Ventilation and Air Conditioning Specifications

EXHIBIT D - [Intentionally Omitted]

EXHIBIT E - Building Parking Area

EXHIBIT F - Rules and Regulations

EXHIBIT G - [Intentionally Omitted]

EXHIBIT H - Description of the Land

EXHIBIT I - List of Holidays

EXHIBIT J - [Intentionally Omitted]

EXHIBIT K - Subordination, Attornment and Non-Disturbance Agreement

EXHIBIT L - [Intentionally Omitted]

EXHIBIT M - List of Tenant owned Property

                                        -vi-
<PAGE>

                                        LEASE

                                       PARTIES

     THIS AMENDED AND RESTATED LEASE, made as of August 11, 1995, between
SOUTH BRUNSWICK INVESTORS, L.P., a Delaware limited partnership having a mailing
address at c/o THE SHIDLER GROUP, Suite 1105, One Logan Square, Philadelphia,
Pennsylvania 19103, hereinafter called "Landlord," and INTERNATIONAL BUSINESS
MACHINES CORPORATION, a New York corporation, having its principal office at Old
Orchard Road, Armonk, New York 10504, hereinafter called "Tenant."

                                     INTRODUCTION

     Landlord and Tenant entered into a Lease dated March 31, 1995 for Tenant's
Lease of certain leased premises located in South Brunswick Township, Middlesex
County, New Jersey (as amended, the "First Lease").  The leased premises are
located upon a parcel of land which Landlord intends to subdivide into three (3)
parcels (the "Subdivision").  Effective immediately upon approval of the
Subdivision by all relevant authorities and the expiration, without appeal by
any party, of the period of time during which such approval may be appealed,
Landlord and Tenant desire that certain amendments to the First Lease shall
automatically take effect and that the First Lease shall be amended and restated
in its entirety, as set forth herein.  Therefore, subject to the granting of
final and unappealable approval of the Subdivision, Landlord and Tenant hereby
amend and restate the First Lease in its entirety by entering into this Amended
and Restated Lease.

                                     ARTICLE ONE

                                       PREMISES

     Section 1.01.  LEASE OF PREMISES.  Landlord hereby leases to Tenant, and
Tenant hereby leases from Landlord, upon and subject to the covenants,
agreements, provisions and conditions of this Lease, the Leased Premises.

     Section 1.02.  LEASED PREMISES.

     The Leased Premises shall mean the entirety of buildings numbered one (1)
and three (3), as shown on EXHIBITS A1 to A4 (the "Buildings"), situated on the
plot of land described on EXHIBIT H (the "Land").  The actual rentable area of
the Leased Premises is 200,000 square feet.  The Land and all improvements upon
the Land (including the Buildings, Common Buildings Facilities, Buildings
Service Systems, Leased Premises Service Systems and Buildings Parking Area) are
collectively referred to in this Lease as the "Project."

     Section 1.03.  COMMON BUILDINGS FACILITIES.  This Lease includes the right
of Tenant to use the Common Buildings Facilities in common with other tenants of
the Buildings.  

                                          -1-
<PAGE>

The words "Common Buildings Facilities" shall mean all of the facilities in the
Project designed and intended for use by the tenants of the Buildings in common
with Landlord and each other, including corridors; elevators; fire stairs;
telephone and electric closets; telephone trunk lines and electric risers;
aisles; walkways; truck docks; plazas; the roof and Buildings Parking Area to
the extent not reserved for exclusive use by Landlord or others; courts;
restrooms; service areas; lobbies; landscaped areas, and all other common and
service areas of the Project intended for such use on the date hereof;
excluding, however, (1) that part of the roof of the Buildings licensed for the
exclusive use of Tenant in accordance with Article Thirty-Six, and (2) the
restrooms, lobbies, corridors and telephone and electric closets on floors
leased entirely by Tenant which shall be for the exclusive use of Tenant and
shall not be used in common with other tenants or occupants of the Buildings.

                                     ARTICLE TWO

                                         TERM

     Section 2.01.  INITIAL TERM.  Tenant shall lease the Leased Premises for an
initial term ("Initial Term") commencing on that date upon which approval of the
Subdivision becomes final and unappealable by any party (the "Commencement
Date") and terminating, unless extended or sooner terminated pursuant to the
terms of this Lease, on March 31, 2002.  The parties shall enter into a
Supplemental Agreement, in the form marked EXHIBIT B, setting forth the
commencement and expiration dates of the Initial Term.  In the event that the
Commencement Date shall not occur prior to June 30, 1996, then this Amended and
Restated Lease shall be null and void and of no force or effect.

     Section 2.02.  [Intentionally Omitted]

     Section 2.03.  EXTENDED TERM.  Tenant shall have the option to extend the
term of this Lease (i) for the entire Leased Premises, (ii) for only Building 1,
representing approximately 170,000 square feet of the Leased Premises or (iii)
for only Building 3, representing approximately 30,000 square feet, for One (1)
consecutive Five (5) year term (the "Extended Term").  Such option shall be
exercised by written notice to Landlord given at least nine (9) months prior to
the expiration of the Initial Term.  The Extended Term shall be upon the same
covenants, agreements, provisions and conditions that are contained herein for
the Initial Term, except that Tenant shall not have any option to extend the
term of this Lease; and provided, further, that if Tenant exercises its option
to lease only Building 3, Tenant shall be responsible, at its sole cost and
expense, for installing in Building 3 any heating, ventilating, air
conditioning, electric, plumbing or other utility or mechanical systems
necessary to enable operation of Building 3 independently of Building 1.  The
Annual Rent specified in Section 3.02 shall be payable during the Extended Term.

     Section 2.04.  EARLY TERMINATION IN EXTENDED TERM.  Tenant may, at its
option and without charge, terminate this Lease and the Term as of a date no
earlier than the thirty-seventh (37th) month of the Extended Term as to entire
Leased Premises or only as to 

                                       -2-
<PAGE>

the entirety of Building 1 or the entirety of Building 3, as Tenant shall elect
in Tenant's notice of termination, by written notice by giving Landlord at least
twelve (12) months prior notice of Tenant's intention to terminate on a date
specified in the notice no earlier than the thirty-seventh (37th) month of the
Extended Term.  If requested by Landlord, the parties shall enter into a
cancellation and release agreement, in a form reasonably acceptable to both
parties, confirming the end of the Term.  This Lease and the Term shall come to
an end on the date no earlier than the thirty-seventh (37th) month of the
Extended Term specified by Tenant in Tenant's notice with the same force and
effect as if the Term was, in and by the provisions hereof, fixed to expire on
such date and not on the date in this Lease provided.  Tenant's option to
terminate the Extended Term shall expire at the end of the forty-eighth (48th)
month of the Extended Term.

     Section 2.05.  TERM OF THIS LEASE.  The word "Term" and the words "term of
this Lease" shall mean the Initial Term and any Extended Term which may become
effective.

                                    ARTICLE THREE

                               RENT AND ADDITIONAL RENT

     Section 3.01.  ANNUAL RENT.  Commencing on the Commencement Date and
subject to the provisions of this Lease, Tenant shall pay the Annual Rent ("the
Annual Rent") of One Million Seven Hundred Thousand Dollars ($1,700,000) payable
in equal monthly installments in advance of One Hundred Forty-One Thousand Six
Hundred Sixty-Six and 67/100 Dollars ($141,666.67) on the first day of each
calendar month during the Term.  The Annual Rent has been calculated at the
annual rate of Eight and 50/100 Dollars ($8.50) per square foot of rentable
area.  Rent for any period of less than one month shall be apportioned based on
the number of days in that month.  Tenant will pay the Annual Rent and
Additional Rent to Landlord at Suite 1105, One Logan Square, Philadelphia,
Pennsylvania 19103 or to such other person or at such other place as Landlord
may designate in writing.

     Section 3.02.  EXTENDED TERM RENT.  The Annual Rent for the Premises for
the Extended Term shall be Eight and 50/100 Dollars ($8.50) per square foot of
rentable area.

     Except as set forth in this Article III, the leasing of the Premises for
the Extended Term shall be upon the same covenants, agreements, provisions and
conditions of this Lease as are in effect on the date immediately prior to the
date the Extended Term begins.

     Section 3.03.  ADDITIONAL RENT.  In addition to Annual Rent, Tenant shall
pay Additional Rent ("Additional Rent") which shall mean all sums of money
payable by Tenant under this Lease other than Annual Rent.  All Annual Rent and
Additional Rent shall be paid by Tenant without offset, deduction or abatement,
except abatement otherwise specifically provided in this Lease.

                                      -3-
<PAGE>

     Section 3.04.  OPERATING EXPENSES.  Tenant shall pay as Additional Rent the
total amount of annual Operating Expenses for each Operating Expense Year. 
Ninety (90) days prior to any Operating Expense Year, the Landlord shall provide
Tenant with a complete and itemized, estimated budget (the "Budget") of the
estimated Operating Expenses for the year.  Payments of Operating Expenses shall
be made by the Tenant to the Landlord in twelve (12) equal monthly installments
paid on the first day of each month during the Operating Year based on the
Operating Expenses shown in the Budget.  Within forty-five (45) days after both
the end of the first six months of an Operating Year (the "Semi-Annual Portion")
and after the end of each Operating Expense Year, Landlord shall provide Tenant
the Landlord's Statement as described in Section 3.07.

     (a)  The words "Operating Expenses" shall mean the operating costs
specified below in Paragraph A which are actually incurred by Landlord in the
Operating Expense Year to the extent they are properly allocable (in accordance
with generally accepted accounting principles and practices consistently
applied) to the operation, repair and maintenance of the Project.  Operating
Expenses shall exclude items billed and paid directly by Tenant.

     (b)  The words "Operating Expense Year" shall mean the twelve month period
beginning on the Commencement Date and each succeeding twelve month period
during the term.

     A.   ITEMS INCLUDED IN OPERATING EXPENSES:

     (1)  salaries, wages, including Landlord's employment taxes (such as FICA
and unemployment) and benefits paid to employees (such as medical insurance) and
all other expenses incurred for the employment of the Buildings operating
personnel, excluding Landlord's officers and partners and headquarters and
administrative and accounting staff;

     (2)  the cost of materials and supplies;

     (3)  the cost of replacements for tools and maintenance equipment (such
equipment shall not include air conditioning equipment, boilers, elevators or
any items of a capital nature; all tools and maintenance equipment purchased
during the first year of full occupancy of the Buildings shall be considered
capital items.);

     (4)  amounts paid by Landlord to independent contractors for services
(including full or part-time labor) and materials;

     (5)  water charges and sewer rents;

     (6)  the cost of repainting or otherwise redecorating any part of Common
Buildings Facilities;

     (7)  the cost of telephone service, postage, office supplies, maintenance
and repair 

                                     -4-
<PAGE>

of office equipment and similar charges related to operation of the Buildings;

     (8)  premiums for insurance purchased by Landlord pursuant to Subsection
10.02(a), subject to Paragraph B, subparagraph (11) below;

     (9)  management fee for administration, such fee being two percent (2%) of
the Annual Rent and Operating Expenses allocated to the Tenant;

     (10) all costs and expenses (other than those of a capital nature) of
maintaining, repairing and replacing paving, curbs, walkways and landscaping,
including snow removal;

     (11) the cost of electricity, steam and fuel used to ventilate, heat, light
and air condition tenant space and for the Common Buildings Facilities,
including fuel for emergency generators (excluding utilities separately metered
to tenants); cost of installing and replacing light bulbs, tubes and ballasts in
the Common Buildings Facilities and Buildings Parking Area;

     (12) the cost of normal maintenance and preventive maintenance of
mechanical and electrical equipment, including plumbing, sprinklers, heating,
ventilating and air conditioning and elevator equipment, but excluding capital
expenditures  (If because of guarantees, warranties or any other reasons, all of
such costs are not incurred within the Operating Expense Year, the Operating
Expense Year will only include those costs actually incurred.  The remaining
costs shall be charged in the following operating expense year (s) when actually
incurred;

     (13) the cost of providing services by Landlord in Article Six;

     (14) the cost of general security for the site and grounds (apart from
security into and within each of the Buildings which shall be provided by
Tenant);

     (15) the cost of janitorial supplies and services, window cleaning;

     (16) the cost of trash removal, including confidential waste and recycling;

     (17) the cost of emergency generators, excluding those for computer rooms;

     (18) the cost of an on site office and segregated storage area ("Landlord's
Space") for Landlord's parts, tools, supplies (the Landlord's Space shall be
designated at the inception of the Lease and, if located within the Leased
Premises, may be relocated to any other available location other than the Leased
Premises reasonably acceptable to Tenant and Landlord on three (3) months prior
notice) (as long as Landlord's Space is located in the Leased Premises and
Tenant in paying rent for such Landlord's Space, such rent shall be excluded
from Operating Expense);

                                 -5-
<PAGE>

     (19) the cost of maintenance and repair designated in Section 9.01 (1),
(2), (3), and (4) (excluding such items considered Capital Improvements);

     (20) cost of removal of asbestos containing material in connection with
maintenance, repair or restoration of mechanical systems;

     (21) all other costs incurred by Landlord, not otherwise designated in this
Lease but reasonably related to the operation, repair and maintenance of the
Project.

     (22) the costs of improvements (if any) required within the Leased Premises
to comply with the provisions of the federal American with Disabilities Act, as
amended, and any similar New Jersey requirements (such costs and improvements
shall not be considered Capital Improvements under this Lease)

     Operating Expenses shall be reduced by the amounts of any reimbursement,
refund or credit received or receivable by Landlord with respect to any item of
Operating Expenses.  If any such reimbursement, refund or credit is received or
receivable by Landlord in a later Operating Expense Year, it shall be applied
against the Operating Expenses for such later Operating Expense Year; and, if
the Term has expired, such item shall be promptly refunded by Landlord to
Tenant.

     B.   ITEMS EXCLUDED FROM OPERATING EXPENSES:

     (1)  [Intentionally Omitted.]

     (2)  the cost of any work performed (such as preparing a tenant's space for
occupancy, including painting and decorating) or services provided (such as
separately metered electricity) for any tenant at such tenant's cost, or
furnished by Landlord without charge as an inducement to lease (such as free
rent or improvement allowances); it is understood and agreed that Landlord is
not furnishing to Tenant any of the work or services described in this 
Section 3.04 B (2) in connection with Tenant's occupancy under this Lease.

     (3)  the cost of installing, operating and maintaining any specialty
service, such as an observatory, broadcasting facility, luncheon club, retail
store, sundry shop, newsstand, concession, or athletic or recreational club;

     (4)  the cost of removal of asbestos-containing material not related to
repair, maintenance or restoration of mechanical equipment as referenced in 
3.04 A (20);

     (5)  salaries of Landlord's officers and partners and its headquarters
staff;

     (6)  the cost of any work performed or service provided for any tenant of
the Buildings (other than Tenant) to a materially greater extent or in a
materially more favorable manner than that furnished generally to the other
tenants and occupants;

                                      -6-
<PAGE>

     (7)  the cost of any work performed or service provided (such as
electricity) for any facility other than the Buildings (such as a garage) for
which fees are charged;

     (8)  the cost of any items for which Landlord is reimbursed by insurance
proceeds, condemnation awards, a tenant of the Project, or otherwise;

     (9)  the cost of any additions to the Project, or Operating Expenses
generated by such additions, after the date of this Lease;

     (10) the cost of any repairs, alterations, additions, changes, replacements
and the like which under generally accepted accounting principles and practices
are properly classified as capital expenditures;

     (11) the cost of any repair made in accordance with Articles Ten and Twelve
of this Lease entitled "Fire and Other Casualty - Insurance" and "Condemnation";

     (12) insurance premiums to the extent any tenant other than Tenant causes
Landlord's existing insurance premiums to increase or requires Landlord to
purchase additional insurance;

     (13) interest and principal payments on any debt, depreciation, and rental
under any ground lease or other underlying lease;

     (14) any real estate brokerage commissions or other costs incurred in
procuring tenants, or any fee in lieu of commission;

     (15) any advertising expenses;

     (16) any costs representing an amount paid to a related or affiliated
person of Landlord which is in excess of the amount which would have been paid
in the absence of such relationship;

     (17) payments for rented equipment, the cost of which equipment would
constitute a capital expenditure if the equipment were purchased;

     (18) any expenses for repairs or maintenance which are covered by
warranties, guarantees or service contracts (excluding any mandatory
deductibles);

     (19) legal expenses arising out of the construction, operation, use,
occupation or maintenance of the Project, or the enforcement of the provisions
of any agreements affecting the Project, including this Lease;

     (20) the costs and expenses of maintaining or repairing the security
systems within 

                                    -7-
<PAGE>

the Tenant's Leased Premises.  (Tenant shall provide and pay for such service.);

     (21) the costs and expenses of maintaining or repairing any item associated
with the groundwater environmental remediation program.  (Tenant shall provide
and pay for such service.);


     Section 3.05.  REAL ESTATE TAXES.

     (a)  Landlord shall pay when due all real estate or property taxes,
assessments and other governmental fees, impositions or charges of any kind
which shall be levied or assessed or which become liens upon the Project
(hereinafter called "Real Estate Taxes").  Tenant shall pay Landlord, as
Additional Rent, the Real Estate Taxes levied or assessed on the Project.  Such
payment shall be made in equal monthly installments to Landlord, based on the
Budget and actual Real Estate Taxes, in the same manner provided in Section 3.04
for Operating Expense installments.  Within 45 days prior to the end of each
year, Landlord shall provide Tenant a written statement of Real Estate Taxes for
the new Lease Year accompanied by a copy of the tax bills for the prior lease
year and Landlord's estimate of Real Estate Taxes for the new Lease Year.

     (b)  Real Estate Taxes shall not include (1) income tax, tax on rents or
rentals, excess profits or revenue tax, excise tax or inheritance tax, gift tax,
gains tax, franchise tax, corporation tax, capital levy transfer, estate,
succession or other similar tax or charge that may be payable by or chargeable
to Landlord under any present or future Laws; (2) increases in assessments
caused by Landlord's sale of all or any part of the Project or an interest
therein; (3) interest or penalties imposed upon Landlord for late payment of
Real Estate Taxes; and (4) special assessments and Real Estate Taxes resulting
from the expansion or renovation of the Project or from a tenant's improvements
not approved by Tenant

     (c)  [Intentionally Omitted.]

     (d)  If the Project is not taxed as a separate and independent tax lot,
Landlord shall make application to the taxing authorities to obtain a separate
and independent assessment thereof.  If the taxing authorities refuse to do so,
the taxes assessed against the said tax lot shall be equitably apportioned.

     (e)  Any increase or decrease in Real Estate Taxes during the Term shall be
apportioned so that Tenant shall pay or receive only that portion of the
increase or decrease in Real Estate Taxes that falls within the Term.  If
allowed by Laws, Landlord shall pay Real Estate Taxes in installments.

     (f)  Any incentives or abatements of Real Estate Taxes which are received
by or credited to Landlord shall be passed through to Tenant.

                                    -8-
<PAGE>

     Section 3.06.  ADJUSTMENT TO FIXED ANNUAL RENT.

     (a)  If during any Lease Year the Landlord makes Capital Improvements then,
subject to the provisions of this Article, in each Lease Year the Tenant shall
pay its "pro rata share" amount equal to a fraction of the Landlord's documented
cost of such Capital Improvements.  The numerator of the fraction shall be the
period of time between the installation of and final payment for the Capital
Improvements and the end of the Term (assuming, for this purpose, that the
Tenant does not extend for the Extended Term) and the denominator shall be the
economic life of the Capital Improvements as determined by the Landlord pursuant
to generally accepted accounting principles and practices, consistently applied;
provided, that the fraction shall not exceed one (1).  All costs, including
interest costs, shall be amortized on a straight line basis over such economic
life.  If at the expiration or earlier termination of the Term the Tenant has
exercised the Extended Term, the Landlord shall promptly recalculate the
fraction and on or prior to the expiration or earlier termination date, the
Tenant shall reimburse the Landlord for the sum due the Landlord by reason of
the adjusted fraction.

     (b)  The words "Lease Year" shall mean the twelve-month period beginning on
the Commencement Date and each succeeding twelve-month period during the Term. 
Any sums due hereunder for a partial year shall be pro rated based on a 365 day
year.

     (c)  The words "Capital Improvements" shall mean improvements,
replacements, or repairs to the Project which according to generally accepted
accounting principles and practices are required to be capitalized and, in
addition, are required (i) by Laws or insurers of the Premises, or (ii) by
reason of damaged property which is not covered by the insurance proceeds or
(iii) to continue operation of the Project for the purposes and in the manner
intended on the Commencement Date, or (iv) for the purpose of reducing operating
expenses of the Project up to the costs saved as a result of the installation
thereof as reasonably determined by the Landlord.  Capital Improvements shall
include replacement of the Buildings Systems and Structures.

     (d)  Except in the case of emergencies, the need, nature and plans for
Capital Improvements shall be subject to the reasonable approval of the Landlord
and the Tenant and Landlord shall submit its plans therefor to the Tenant at
least three (3) months prior to the date the Landlord intends to begin the work.
Thereafter, the Landlord shall also submit to the Tenant an estimate of the
total "soft" and "hard" costs thereof and the relevant bids in advance of
ordering work for Capital Improvements.  The Tenant shall have the option,
exercised within thirty (30) days from the date it receives this information, to
obtain bids and require that the work be done by the lowest qualified bidder who
will equal or exceed the quality of workmanship found in the Project.

     (e)  Prior to commencement of the work, the Landlord and the Tenant shall
agree upon the total cost for the Capital Improvements to be paid by the Tenant
in accordance with Section 3.06.  Such cost shall be divided by the number of
remaining monthly periods of the 

                                     -9-
<PAGE>

Term, and the resulting sum added to the monthly rent due under this Lease.  The
parties shall agree upon the adjusted monthly rent by an amendment to this
Lease.

     Section 3.07.  COMPUTATION AND BILLING.

     (a)  The words "Landlord's Statement" shall mean a statement, prepared by
Landlord setting forth in detail the amount of (1) each item included in the
Operating Expense for the Operating Expense Year or Semi-Annual Portion thereof,
and/or the Real Estate Taxes for the Real Estate Tax Year and (2) any other
Additional Rent or adjustments to the Fixed Rent.  Within forty-five (45) days
after the end of each Operating Expense Year or Semi-Annual Portion thereof,
Landlord shall provide Tenant with the Landlord's Statement.

     (b)  Landlord shall, at Tenant's request, within 7 business days make
available to Tenant for inspection and examination at Tenant's cost the books
and records that relate to Landlord's Statement.  If Tenant disputes any portion
of Landlord's Statement and the parties cannot resolve their differences within
thirty (30) days thereafter, either party may resolve the matter by arbitration
as provided in Article Thirty-Eight.  Pending resolution of any dispute, Tenant
may withhold payment of the amount in dispute otherwise required to be paid
under Section 3.08(d) or Section 3.07(e).

     (c)  If the actual Operating Expenses in any Operating Expense Year or
semi-annual portion thereof are less (more) than the Operating Expenses paid by
the Tenant for the Operating Expense Year or semi-annual portion thereof, the
difference of shall be paid by Landlord to Tenant (paid by Tenant to Landlord)
in a lump sum within thirty (30) days following the date Landlord renders
Landlord's Statement to Tenant.

     (d)  If the actual Real Estate Taxes in any Real Estate Tax Year are less
(more) than the Real Estate Taxes paid by the tenant for the Real Estate Tax
Year, the difference shall be paid by Landlord to Tenant (paid by Tenant to
Landlord) in a lump sum within thirty (30) days following the date Landlord
renders Landlord's Statement to Tenant.

     (e)  If Landlord after written notice from Tenant has not provided Tenant a
Landlord's Statement by the end of twelve (12) months following the year
(whether calendar or fiscal) in which the Operating Expenses or Real Estate
Taxes are payable by Landlord, Landlord agrees that Landlord has waived its
claim against Tenant for any increase in Operating Expenses and Real Estate
Taxes for that year.

     (f)  This Article shall survive the expiration or earlier termination of
the Term.

     Section 3.08.  TAX CONTEST.

     (a)  In consideration of Tenant's undertaking to reimburse Landlord for
Real Estate Taxes, Tenant shall have the right, by appropriate proceedings, to
protest any assessment or reassessment or any special assessment, or any change
in the tax rate, or the validity of any of 

                                    -10-
<PAGE>

the above, provided that such contest

     (b)  Landlord shall notify Tenant in writing within fifteen (15) days after
Landlord's receipt of notice of all assessments and the tax rates and any
proposed changes to them.  Tenant shall notify Landlord in writing within
fifteen (15) business days after receipt of Landlord's notice if Tenant wants to
file a protest.  Prior to such notice or if Landlord fails to give such notice,
Tenant shall not be obligated to pay Tenant's share of any increase in Real
Estate Taxes.

     (c)  In the tax proceedings, Tenant may act in its own name and/or the name
of Landlord and Landlord will, at Tenant's request and provided Landlord is not
put to any expense thereby, cooperate with Tenant in any way Tenant may
reasonably require in connection with the protest.  Any protest conducted by
Tenant hereunder shall be at Tenant's expense and if interest or late charges
become payable with respect to the Real Estate Taxes as a result, Tenant shall
reimburse Landlord for the same.  However, Landlord shall be solely responsible
for any penalties, interest or late charges imposed on Landlord through no fault
of Tenant.

     (d)  Tenant may require Landlord at Landlord's expense to protest any type
of assessment or the tax rate one time only during the Term by timely
notification to Landlord.  Tenant shall bear Landlord's cost of protest.  If
Landlord is unable or fails to act on such request, then Tenant may contest
taxes at its expense.

     (e)  If Landlord shall receive a reduction or refund for any year for which
Tenant shall be obligated to pay or shall have paid Real Estate Taxes, the
amount of such reduction or refund shall be subtracted from the Real Estate
Taxes payable or paid by Landlord for the tax year to which the reduction or
refund applies and proper reimbursement shall be made by Landlord to Tenant
promptly after Landlord receives or is credited with such refund or reduction. 
Landlord agrees to keep Tenant apprised of all tax protest filings and
proceedings undertaken by Landlord or others to obtain a tax reduction or refund
for the Project.  If the refund or reduction resulted from Tenant's efforts,
Landlord shall also reimburse Tenant for reasonable attorneys' fees and any
other reasonable expenses incurred by Tenant in connection with the protest. 
Otherwise, Landlord may deduct from the total refund any reasonable attorneys'
fees and other reasonable expenses incurred by Landlord therefor.

     Section 3.09.  PLACE FOR PAYMENT.

     Installments of the Fixed Annual Rent and all other payments required to be
made by the Tenant to the Landlord pursuant to the provisions of this Lease
shall be paid to the Landlord at Suite 1105, One Logan Square, Philadelphia,
Pennsylvania 19103, Att: Clay W. Hamlin, III, President, or at such other place
as the Landlord may from time to time designate by notice to the Tenant.

                                      -11-
<PAGE>

                                     ARTICLE FOUR

                                      ACCEPTANCE

     Tenant agrees to accept possession of the Leased Premises under this Lease
in the condition, state of title and status of all other matters existing as of
the Commencement Date.  Notwithstanding anything contained in this Lease to the
contrary, Landlord makes no warranty or representation, express or implied, as
to the condition of the Leased Premises or the Project or the suitability of the
Leased Premises or the Project for Tenant's use or for any other purpose, or as
to any other matter relating to the Leased Premises or the Project.  Tenant
acknowledges that Tenant owned the Project immediately before the Commencement
Date and is fully aware of and thoroughly familiar with all matters relating to
the Leased Premises and the Project including, without limitation, the condition
of, the Leased Premises, and agrees that the Leased Premises and the Project
are, as of the Commencement Date, in compliance with the provisions of this
Lease.

                                     ARTICLE FIVE

                                   LANDLORD'S TITLE

     Section 5.01.  LANDLORD'S REPRESENTATIONS REGARDING TITLE AND USE. 
Landlord represents and warrants as a condition of this Lease that it possesses
good marketable fee title to the Project; that it is authorized to make this
Lease for the Term; and that the provisions of this Lease do not or will not
conflict with or violate the provisions of existing or future agreements between
Landlord and third parties.

                                     ARTICLE SIX

                                       SERVICES

     Section 6.01.  SERVICES PROVIDED BY LANDLORD.  Landlord shall, at its
expense and subject to Tenant's reimbursement as provided in Section 3.04,
furnish to Tenant the following services, utilities, supplies and facilities:

     (1)  Access to the Leased Premises twenty-four (24) hours a day, seven (7)
days a week.

     (2)  Passenger elevator service twenty-four (24) hours a day, seven (7)
days a week and freight elevator service reasonably required by Tenant, only if
such elevator service exists.

     (3)  (a)  Heat, ventilation and air conditioning ("HVAC") in accordance
with EXHIBIT C, on Tenant's business days from 6:30 a.m. to 6:00 pm. and, at
Tenant's request, at all other times as hereinafter provided in this Article.

                                     -12-
<PAGE>

          (b)  Landlord shall furnish HVAC beyond the above-stated hours,
provided that notice requesting such service is delivered to Landlord before
noon on the business day when such service is required for that evening, and by
noon of the preceding business day when such service is required on Saturday,
Sunday or the holidays ("Holidays") listed on EXHIBIT I.  This service shall be
furnished at "Landlord's Costs" which shall mean the actual labor and utility
costs incurred by Landlord to provide such overtime service, without markup of
any kind.  Landlord's Costs shall be paid by Tenant or, alternatively, shall be
shared proportionately (based on square feet of rentable area serviced by this
overtime HVAC and hours of use requested by the occupant) between Tenant and
other tenants, if any, located in the same HVAC zone who have requested and are
enjoying the benefit of the service at the same time as Tenant.  Landlord shall
bill Tenant on or before the last day of the month following the month in which
Landlord's Costs are incurred, and shall submit with its invoice a tabulation of
the hours and the dates on which the overtime HVAC was furnished.  Tenant shall
reimburse Landlord therefor within thirty (30) days after receipt of the invoice
and other data supporting the charges that Tenant may reasonably request.

     (4)  Hot and cold running potable water for Tenant's purposes.

     (5)  Electricity for lighting and for the operation of Tenant's office
machines, appliances and equipment, and for the Common Buildings Facilities and
Buildings Parking Area.

     (6)  Providing, installing and replacing light bulbs, tubes and ballasts in
the Common Buildings Facilities and Buildings Parking Area.

     (7)  Removing of ice and snow from the Common Buildings Facilities and
Buildings Parking Area.

     (8)  Vermin extermination and repair and replacing any item in the
Buildings damaged by vermin.

     (9)  Facilities for Tenant's loading, unloading, delivery and pick-up
activity at the Buildings, including access thereto twenty-four (24) hours a
day, seven (7) days a week.

     Section 6.02.  LANDLORD'S FAILURE TO PROVIDE SERVICES.

     Section 24.02 of this Lease shall govern Tenant's remedies in the event of
Landlord's  default in furnishing or paying for any utilities, services or
facilities to be furnished to Tenant hereunder.

                                    ARTICLE SEVEN

                                       PARKING


                                        -13-

<PAGE>


     Section 7.01.  TENANT'S PARKING SPACES.

     (a)  Landlord shall, at its expense, provide Tenant with 640 self-parking
parking spaces (which number is based on a minimum of 3.2 parking spaces per
1,000 square feet of rentable area in the Leased Premises) within the Buildings
Parking Area for Tenant's use.  The Buildings Parking Area is shown on
EXHIBIT E.  The Buildings Parking Area shall be available for use twenty-four
(24) hours a day, every day of the year during the Term and shall be illuminated
when necessary to maintain a safe environment.  Further, Landlord shall keep and
maintain the Buildings Parking Area in a clean, safe and first-class condition.

     (b)  If Tenant, its employees, licensees or guests are not able to use the
Buildings Parking Area and access ways thereto because of unauthorized use by
others, Landlord shall take whatever steps are necessary to end and prevent
further unauthorized use including, if appropriate, posting signs, distributing
parking stickers and towing away unauthorized vehicles.

     Section 7.02.  VISITORS' SPACES.  During the Term, Landlord shall reserve
twenty (20) parking spaces in the Buildings Parking Area adjacent to the main
entrance of Building 1 as depicted on Exhibit E for use by invitees of Tenant
and the other tenants in the Buildings.  These parking spaces shall be
designated for transient use, and Landlord shall take reasonable steps to insure
that these parking spaces are available for such use at all times.

                                    ARTICLE EIGHT

                                USE OF LEASED PREMISES

     Section 8.01.  GENERAL USES.  Tenant shall have the right to use the Leased
Premises solely and only for executive and administrative offices; marketing,
display, storage, service, repair and use of Tenant's products and equipment;
engineering; education and training of Tenant's customers and employees, and all
other uses incidental and related directly thereto, and for no other purpose.

     Section 8.02.  SPECIAL USES.  If Tenant shall institute a special use of
Leased Premises which requires an amendment to the existing certificate of
occupancy, Tenant shall be responsible for obtaining the same as well as any
other governmental permit, approval or license required by applicable Laws. 
Landlord, at Tenant's sole cost and expense, shall cooperate with Tenant and
shall execute all applications, authorizations and other instruments reasonably
required to enable Tenant to fulfill its responsibilities under this Section.

                                     ARTICLE NINE

                               REPAIRS AND MAINTENANCE

     Section 9.01.  LANDLORD'S REPAIRS.  Except for Tenant's maintenance,
repair, 

                                     -14-
<PAGE>


restoration and replacement obligations specified under this Lease, Landlord 
shall maintain, and perform repair, restoration, replacement, work at, the 
Project, including, without limitation, the obligations of Landlord to 
maintain, repair and replace, as necessary, and keep in good order, safe and 
clean condition (1) the plumbing, sprinkler, HVAC (excluding supplemental 
HVAC systems located in computer, raised floor areas) and electrical and 
mechanical lines and equipment associated therewith, elevators and boilers, 
broken or damaged glass and damage by vandals; (2) utility and trunk lines, 
tanks and transformers and the interior and exterior structure of the 
Buildings, including the roof, exterior walls, bearing walls, support beams, 
floor slabs, foundation, support columns and window frames; (3) improvements 
to the Land; (4) including ditches, shrubbery, landscaping and fencing, and 
(5) the Common Buildings Facilities located within or outside the Buildings, 
including the common entrances, corridors, interior and exterior doors and 
windows, loading docks, stairways, lavatory facilities and the Buildings 
Parking Area and access ways therefor. Further, Landlord shall perform all 
repairs and restoration work required by Article Ten, "Fire and Other 
Casualty - Insurance" and Article Twelve, "Condemnation."  In no event shall 
Landlord be obligated to repair any damage caused by any act, omission or 
negligence of Tenant or its employees, agents, invitees, licensees, 
subtenants or contractors.

     Section 9.02.  TENANT'S REPAIRS.  Except for Landlord's obligations 
under Section 9.01, Tenant shall maintain the Leased Premises and the 
fixtures and appurtenances therein in good condition and repair at all times, 
and will not commit any act of waste.  Tenant shall be responsible at 
Tenant's sole cost and expense for the maintenance, repair and/or replacement 
of any special heating, ventilating, air conditioning, plumbing, electrical 
or other systems and fixtures installed solely to service the Leased 
Premises, whether installed or paid for by Landlord or by Tenant with 
Landlord's consent.  Tenant shall reimburse Landlord for all costs and 
expenses of repairing and replacing all damage or injury to the Leased 
Premises, the Buildings, or the Project and to fixtures and equipment caused 
by Tenant or its employees, agents, invitees, licensees, subtenants, or 
contractors, or as the result of all or any of them moving in or out of the 
Buildings or by installation or removal of furniture, fixtures or other 
property.  Such costs and expenses shall be collectible as Additional Rent 
and paid by Tenant upon demand by Landlord.  Tenant shall not be liable for 
repairs or replacements necessitated by ordinary wear and tear, damage by 
fire or other casualty and damage caused by Landlord or by others for whom 
Tenant is not responsible.  Tenant shall give prompt notice to Landlord of 
any accident, fire, damage or other casualty occurring on or to the Leased 
Premises, whether or not Landlord may have or assume any liability therefor 
or any responsibility to repair or remedy the same.

     Section 9.03.  LANDLORD'S FAILURE TO MAKE REPAIRS.

     Section 24.02 of this Lease shall govern Tenant's remedies in the event of
Landlord's failure or refusal to perform any repairs, restoration work, or
replacements which it is required to perform under Section 9.01 or elsewhere in
this Lease.

                                     -15-
<PAGE>


     Section 9.04.  EMERGENCY REPAIRS.  If during the Term repairs, restoration
work or replacements become necessary because of an emergency and the provisions
hereof require the Landlord to make these repairs and replacements, Tenant may
in good faith perform them if, in Tenant's reasonable opinion, they are
necessary to preserve the Leased Premises, or the safety or health of the
occupants in the Leased Premises, or Tenant's Property, or are required by the
Laws; provided, however, that Tenant shall first make a reasonable effort to
inform Landlord before making them.

                                     ARTICLE TEN

                         FIRE AND OTHER CASUALTY - INSURANCE

     Section 10.01.   DAMAGE OR DESTRUCTION.

     (a)  If any portion of the Project is damaged by fire, earthquake, flood or
other casualty, or by any other cause of any kind or nature not caused by Tenant
(the "Damaged Property") and the Damaged Property can, in the opinion of
Landlord's architect reasonably exercised, be repaired within one hundred eighty
(180) days from the date of the damage, Landlord shall proceed immediately to
make such repairs as required by Section 10.01 (c).  This Lease shall not
terminate, but Tenant shall be entitled to a pro rata abatement of Annual Rent
and Additional Rent payable during the period commencing on the date of the
damage and ending on the date the Damaged Property is repaired as aforesaid and
the Leased Premises are delivered to Tenant. The extent of rent abatement shall
be based upon the portion of the Leased Premises rendered untenantable, unfit or
inaccessible for use by Tenant for the purposes stated in this Lease during such
period.  When required by this Article, the architect's opinion shall be
delivered to Tenant within thirty (30) days from the date of the damage.  The
architect's opinion shall be made in good faith after a thorough investigation
of the facts required to make an informed judgment.  The architect shall
consider and include as part of his evaluation the period of time necessary to
obtain the required approvals of the mortgagee, insurer, and municipal
authorities, to order and obtain materials, and to engage contractors. 
Landlord, at Landlord's election, may also carry such other insurance,
including, without limitation, comprehensive general liability insurance, that
Landlord may deem appropriate, provided that such insurance is generally of the
type and amount customarily carried by owners or tenants in projects similar to
the Project, and the premiums for such insurance shall be included as part of
the Operating Expenses.

     (b)  If (1) in the opinion of Landlord's architect reasonably exercised,
damage to the Damaged Property cannot be repaired within one hundred eighty
(180) days from the date of the damage, or (2) Landlord commences and proceeds
with due diligence but fails to complete the repair of the Damaged Property as
required by paragraph (c) within the one hundred eighty (180) day period,
subject to an extension of time allowed for an Excusable Delay, or (3) the Term
will expire within one (1) year from the date of the damage and Tenant fails to
extend the Term in accordance with any right granted in Section 2.02 within
ninety (90) days from the date of the damage, either party may terminate this
Lease as follows: for the reason stated 

                                     -16-
<PAGE>


in subparagraph (b) (1), by notice to the other within twenty (20) days from the
date on which the architect's opinion is delivered to Tenant; (2) for the reason
stated in subparagraph (b) (2), by such notice within twenty (20) days from the
end of the one hundred eighty (180) day period, as it may have been extended by
an Excusable Delay, and (3) for the reason stated in subparagraph (3), by such
notice within one hundred (100) days from the date of the damage. Upon
termination, Annual Rent and Additional Rent shall be apportioned as of the date
of the damage and all prepaid Annual Rent and Additional Rent shall be repaid.

     (c)  If neither party exercises its option to terminate hereunder Landlord
shall, with due diligence, repair the Damaged Property as a complete
architectural unit of substantially the same usefulness, design and construction
existing immediately prior to the damage; provided, that, with respect to
improvements or alterations made by Tenant after the commencement Date, Tenant
shall pay all costs relating to such improvements or alterations.  Tenant shall
be entitled to a pro rata abatement of Annual Rent and Additional Rent in the
manner and to the extent provided in paragraph (a).

     (d)  If by operation of this Article Landlord undertakes but fails to
complete repairs of the Damaged Property as required by the provisions of this
Article and deliver the leased Premises to Tenant within two hundred seventy
(270) days from the date of the damage, for any reason other than a material and
adverse delay caused by Tenant, Tenant may exercise its rights under Section
24.02, failing which either party may terminate this Lease by notice to the
other within three hundred (300) days from the date of the damage.  If either
party elects to terminate, this Lease and the Term shall end on the date
specified in the notice and Annual Rent and Additional Rent shall be apportioned
as of the date of the damage and all prepaid Annual Rent and Additional Rent
shall be repaid.

     (e)  The word "repair" shall include rebuilding, replacing, and restoring
the Damaged Property.

     Section 10.02.   CASUALTY INSURANCE.

     (a)  Through the Term, Landlord shall cause the improvements located on the
Land (including, without limitation, the Buildings, including the tenant
improvements therein ) to be insured against loss or damage by fire and the
perils commonly covered under the standard extended coverage endorsement to the
extent of not less than the "full replacement cost" thereof, including all
improvements, alterations, additions and changes made by Landlord or tenants,
but excluding foundations, footings and excavation, and excluding fixtures and
equipment owned by Landlord or its tenants.  Provided this Lease has not been
terminated pursuant to the Article entitled "Fire or Other Casualty" the
proceeds of such insurance in case of loss or damage shall be used to restore
the Leased Premises, the Buildings and/or other improvements at the Land to the
extent that such proceeds are required for such purposes.

     (b)  Through the Term, Tenant shall cause all improvements made by Tenant
to the Leased Premises, along with Tenant's trade fixtures, furnishings,
equipment and other items of 

                                     -17-
<PAGE>


personal property located on the Leased Premises, to be insured against loss or
damage by fire and the perils commonly covered under the Standard extended
coverage endorsement, in form and amount reasonably satisfactory to Landlord. 
Notwithstanding anything to the contrary provided herein, all proceeds of
insurance payable with respect to damage or destruction of Tenant's property,
including, but not limited to, Tenant's fixtures and equipment, shall be paid
to, and retained by Tenant.

     (c)  With respect to any loss or damage that may occur to the Land (or any
improvements thereon) or the respective property of the parties therein, arising
from any peril customarily insured under a fire and extended coverage insurance
policy, regardless of the cause or origin, including negligence of the parties,
their agents, servants or employees, the party required to carry such insurance
and suffering such loss hereby releases the other party from all claims with
respect to such loss, and Landlord and Tenant mutually agree that their
respective insurance companies shall have no right of subrogation against the
other party on account of any such loss, and each party shall procure from its
respective insurers under all policies of fire and extended coverage insurance a
waiver of all rights of subrogation against the other party which the insurers
might otherwise have under such policies.

     (d)  Tenant shall at all times during the period in which it has any
occupancy rights in the Demised Premises, maintain in full force and affect
comprehensive public liability insurance, naming Landlord as an additional
insured, covering injury to persons and damage to property occurring in or about
the Demised Premised, in such amounts as may reasonably be required by Landlord
from time to time, but not less than $2,000,000 combined single limit.  Tenant
shall lodge with Landlord certificates of such insurance at or prior to the date
Tenant shall make its initial entry into the Demised Premises, and shall lodge
with Landlord renewals thereof at least fifteen (15) days prior to expiration. 
All such policies of insurance shall provide that they shall not be canceled or
amended without at least twenty (20) days prior notice to Landlord.

                                    ARTICLE ELEVEN

                                   INDEMNIFICATION

     Subject to the provisions of Section 10.02(c), Landlord and Tenant each
agree to indemnify and save the other harmless from any and all claims for
bodily injury (including death) or property damage made against one of the
parties hereto if (1) arising from any breach or default by the other party
hereto (including its agents, invitees, employees or contractors) in the
performance of any covenant or agreement on its part to be performed pursuant to
the provisions of this Lease, or (2) occurring within the Project limits and
arising from the misconduct or gross negligence of the other party (including
its agents, invitees, employees or contractors).  This indemnity shall include
all court costs, reasonable attorneys' fees, expenses and liabilities incurred
by the indemnified party against which the claim is made.  If any action or
proceeding is brought against either Landlord or Tenant by reason of any such
claim, the indemnifying party agrees to defend the action or proceeding at its
expense 


                                     -18-
<PAGE>


upon notice from the party to be indemnified.

                                    ARTICLE TWELVE

                                     CONDEMNATION

     Section 12.01.   TAKING - LEASE ENDS.  If at any time during the Term the
whole of the Leased Premises shall be taken for any public or quasi-public use,
under any statute or by right of eminent domain, this Lease shall terminate on
the date of such taking except as provided in Section 12.03.  If less than all
of the Leased Premises shall be so taken and in Tenant's reasonable opinion the
remaining part is insufficient for the conduct of Tenant's business Tenant may,
by notice to Landlord within sixty (60) days after the date Tenant is notified
of such taking, terminate this Lease.  If Tenant exercises its option, this
Lease and the Term shall end on the required date of delivery of the condemned
area to the condemning authority and the Annual Rent and Additional Rent shall
be apportioned and paid to the date specified in Tenant's notice.

     Section 12.02.   TAKING - LEASE CONTINUES.  If less than all of the Leased
Premises shall be taken and, in Tenant's reasonable opinion communicated by
notice to Landlord within sixty (60) days after Tenant is notified of such
taking, Tenant is able to gain access to and continue the conduct of its
business in the part not taken, this Lease shall remain unaffected, except that
Tenant shall be entitled to a pro rata abatement of Annual Rent and Additional
Rent based upon the nature of the space taken (office space, storage, parking
area) and upon the proportion which the area of the Leased Premises or Buildings
Parking Area, as case may be, so taken bears to the area of the Leased Premises
or Buildings Parking Area, as case may be, immediately prior to such taking. 
Landlord and Tenant agree that Tenant shall be conclusively presumed to have
access to and be able to conduct business in the remaining portion of the Leased
Premises if less than thirty percent (30%) of the Leased Premises is taken by
condemnation.

     Section 12.03.   TEMPORARY TAKING.  If the use and occupancy of the whole
or more than thirty percent (30%) of the Leased Premises is temporarily taken
for a public or quasi-public use for a period longer than nine (9) months but
less than the balance of the Term, at Tenant's option to be exercised in writing
and delivered to Landlord not later than sixty (60) days after the date Tenant
is notified of such taking, this Lease and the Term shall terminate on the
required date of delivery of the condemned area to the condemning authority or
shall continue in full force and effect.  If this Lease remains in effect Tenant
shall be entitled to a pro rata abatement of Annual Rent and Additional Rent in
the manner and to the extent provided in Section 12.02.

     Section 12.04.   LANDLORD'S AWARD.  Landlord shall be entitled to receive
the entire award or awards in any condemnation proceeding without deduction
therefrom for any estate vested in Tenant and Tenant shall receive no part of
such award or awards from Landlord or in the proceedings except as otherwise
expressly provided in Section 12.05. 


                                     -19-
<PAGE>


Subject to the foregoing, Tenant hereby assigns to Landlord any and all of
Tenant's right, title and interest in or to such award or awards or any part
thereof.

     Section 12.05.   TENANT'S AWARD.  If there is a taking hereunder, Tenant
shall be entitled to receive out of the award or, if allowed by the Laws, to
appear, claim, prove and receive in the condemnation proceeding Tenant's
relocation and moving expenses and the value of Tenant's personal property.

     Section 12.06.   RESTORATION BY LANDLORD.  If there is a taking hereunder
and this Lease is continued Landlord shall, at its expense, proceed with
reasonable diligence use the award proceeds to repair, replace and restore the
Buildings as a complete architectural unit of substantially the same
proportionate usefulness, design and construction existing immediately prior to
the date of taking.

     Section 12.07.   DEFINITIONS.  Taking by condemnation or eminent domain
hereunder shall include the exercise of any similar governmental power and any
sale, transfer or other disposition of the Buildings or Land in lieu or under
threat of condemnation.  The word "Buildings," as used in this Article only,
shall mean only the Leased Premises, Buildings Parking Area and access ways
thereto and Common Buildings Facilities.

                                   ARTICLE THIRTEEN

                             ALTERATIONS AND IMPROVEMENTS

     Section 13.01.   TENANT'S CHANGES - NO APPROVAL.

     (a)  Tenant may place and replace its trade fixtures, tools, machinery,
furniture, floor covering, equipment and other tangible personal property
("Tenant's Personal Property") in the Leased Premises and may make alterations,
improvements, replacements and other changes to the Leased Premises Service
Systems and to the interior of the Leased Premises as it may desire at its own
expense without Landlord's consent. Tenant shall not alter, improve, replace or
change the Buildings Service Systems or the Structure except in accordance with
Section 13.02.

     (b)  The words "Leased Premises Service Systems" shall mean the electrical,
HVAC, mechanical, plumbing, safety and health systems that directly service the
Leased Premises from a localized point of distribution.  Such systems are
dedicated to the Leased Premises at their available capacities (such as HVAC for
computer rooms) and do not service any space other than the Leased Premises.

     Section 13.02.   TENANT'S CHANGES - LANDLORD'S APPROVAL.

     (a)  Tenant may make alterations, improvements, replacements and other
changes to the Buildings Service Systems and to the Structure if Landlord
consents thereto, which consent 


                                     -20-
<PAGE>


shall not be unreasonably withheld or delayed provided that such work does not
in Landlord's reasonable judgment impair the value of the Buildings or Project.

     (b)  If Tenant desires to make alterations, improvements, replacements 
or other changes to the Structure or Buildings Service Systems, Tenant shall 
make a written request for Landlord's approval by submitting to Landlord a 
list of proposed contractors and plans and specifications for the work to be 
performed. Landlord shall respond within fifteen (15) business days from 
receipt of the same, approving those contractors and those portions of the 
work that are acceptable and disapproving those contractors and portions of 
the work that are, in Landlord's judgment reasonably exercised, unacceptable 
and specifying in detail the nature of Landlord's objection.  Failure of 
Landlord to respond as aforesaid shall be tantamount to approval of such 
contractors and plans and specifications in all respects.  Tenant shall cause 
all work done by or on behalf of Tenant to be done in compliance with all 
Laws, in first class good and workmanlike manner, free and clear of all liens.

     (c)  The words "Buildings Service Systems" shall mean the electrical, 
HVAC, mechanical, plumbing, safety and health systems that service the 
Buildings up to the point of localized distribution.  Such systems provide 
the main source of supply and distribution throughout the Buildings.

     (d)  The word "Structure" shall mean bearing walls, roof, exterior 
walls, support beams, foundation, window frames, floor slabs and support 
columns of the Buildings.

     Section 13.03.   TENANT'S OWNED PROPERTY.  All of Tenant's Personal
Property and all non-structural alterations, improvements, replacements and
changes made prior to or during the Term, whether paid for directly by Tenant
(collectively, "Tenant Owned Property" as set forth in Exhibit "M" attached
hereto and hereby made a part hereof) shall be owned by and remain the property
of Tenant..

     Section 13.04.   REMOVAL OF TENANT'S OWNED PROPERTY.  Tenant may remove all
or any of Tenant's Owned Property at any time during the Term or, at its option,
Tenant may abandon the same, in whole or in part, to Landlord at the expiration
or earlier termination of the Term by vacating the Leased Premises without
removing the same; provided that, if requested by Landlord, Tenant shall remove
Tenant's Owned Property at the expiration or sooner termination of this Lease in
accordance with Article 16.  If Tenant removes such things or any of them,
Tenant shall repair all damage caused by such removal and restore to its
previous condition any portion of the Buildings damaged by such removal.

     Section 13.05.   LANDLORD'S CHANGES - TENANT'S APPROVAL.  During the Term,
Landlord shall obtain Tenant's consent, which shall not be unreasonably withheld
or delayed, before making any substantial addition to the Buildings or
materially altering the external appearance thereof, unless required by the
Laws.

                                     -21-
<PAGE>


                                   ARTICLE FOURTEEN

                                  LANDLORD'S ACCESS

     (a)  Landlord shall, upon advance oral notice to Tenant (except in an
emergency), have the right (1) at all reasonable times during Tenant's business
hours to inspect the Leased Premises and to show the same to prospective
mortgagees and purchasers; (2) to show the same to prospective tenants during
the last nine (9) months of the Lease Term, and (3) at all times to make repairs
or replacements as required by this Lease or as may be necessary; provided,
however, that Landlord shall use all reasonable efforts not to disturb Tenant's
use and occupancy of the Leased Premises.

     (b)  Tenant may designate one or more areas in the Leased Premises as
secure areas, and Landlord shall have no right of access thereto without being
accompanied by Tenant's designated representative except in the case of
emergencies.

                                   ARTICLE FIFTEEN

                                 COMPLIANCE WITH LAWS

     Section 15.01.   TENANT'S COMPLIANCE WITH LAWS.  Tenant shall comply with
all federal, state and local statutes, rules, ordinances, orders, codes and
regulations, and legal requirements and standards issued thereunder, including,
without limitation, environmental laws, and requirements (collectively referred
to in this Lease as the "Laws") which are applicable to Tenant's use and manner
of use of the Leased Premises.

     Section 15.02.   LANDLORD'S COMPLIANCE WITH LAWS.

     (a)  Landlord shall comply with all Laws which relate to the performance by
Landlord of any duties or obligations to be performed by Landlord under this
Lease.

     (b)  All boilers and other pressure vessel equipment shall be maintained by
Landlord in accordance with the ASME Standards and Codes.

     (c)  Landlord shall regularly inspect and maintain the HVAC system and
treat the cooling tower water with U.S. Environmental Protection Agency
registered chemicals to prevent the buildup of slime, algae and bacteria, and
shall follow the latest recommendations of the Center for Disease Control or
current practices of the American Society of Heating, Refrigeration and Air
Conditioning Engineers.

                                 ARTICLE SIXTEEN

                              SURRENDER OF POSSESSION

                                     -22-

<PAGE>



     (a)  At the expiration or earlier termination of the Term, Tenant will
peaceably yield up the Leased Premises to Landlord.

     (b)  Any alterations, improvements or additions to the Leased Premises made
by or at the request of Tenant after the Commencement Date shall remain upon the
Leased Premises at the expiration or earlier termination of this Lease and shall
become the property of Landlord unless Landlord shall, at such time as Landlord
gives its written consent to such alterations, improvements or additions,
Landlord gives written notice to Tenant that Tenant must remove such
alterations, improvements, and additions at the expiration or earlier
termination of the Lease.  If Landlord approval is given for the outfitting of
general office space substantially similar to the general office space in the
Leased Premises at the Commencement Date, Tenant shall not be obligated to
remove any such alterations, improvements or additions in such substantially
similar general office space.  Tenant shall promptly repair any damage caused by
such removal (including, but not limited to, repairing and patching holes,
replacing ceiling, floor and wall surfaces and repainting), and restore the
Leased Premises to substantially the same condition in which it existed prior to
the time that any such alterations, improvements, or additions were made. 
Should Tenant fail to remove any such alterations, improvements or additions or
to repair such damage when required or requested by Landlord so to do pursuant
to this Section 16(b), Landlord may do so, and the cost and expense thereof
shall be paid by Tenant to Landlord as Additional Rent.

     (c)  Notwithstanding any other provision of this Lease to the contrary, any
personal property which shall remain in the Leased Premises or any part thereof
after the expiration or termination of this Lease shall be deemed to have been
abandoned and either may be retained by Landlord as Landlord's property or may
be disposed of in such manner as Landlord may see fit, provided that
notwithstanding the foregoing, Tenant shall, upon request of Landlord made no
later than ten (10) days after the expiration  or termination of this Lease,
promptly remove from the Buildings any such personal property at Tenant's own
cost and expense.  Should Tenant fail to do so, Landlord may do so, and the cost
and expense.  Should Tenant fail to do so, Landlord may do so and the cost and
expense thereof shall be paid by Tenant to Landlord as Additional Rent.  If such
personal property or any part thereof shall be sold by Landlord, Landlord may
receive and retain the proceeds of such sale(s) as Landlord's property.  The
covenants contained in this Article 16 shall survive the expiration or earlier
termination.

                                  ARTICLE SEVENTEEN

                                        SIGNS

     Section 17.01.  TENANT'S SIGNS.  Tenant may place its signs on the entrance
doors to the Leased Premises and in hallways or elevator lobbies on floors
wholly leased by Tenant.  On floors partially leased by Tenant, Tenant may place
its signs on entrance doors to the Leased Premises and, at Tenant's expense,
Landlord shall place signs in the elevators and in 


                                     -23-
<PAGE>


the hallways leading to the Leased Premises which give direction to the Leased
Premises.

     Section 17.02.   PROJECT SIGN AND NAME.

     (a)  Tenant agrees that the Project has been renamed the "South Brunswick
Corporate Center."

     (b)  If at any time after the execution of this Lease Landlord changes the
Project name or installs new or substitute signs which are not the Project name,
Landlord shall notify Tenant at least sixty (60) days prior to the date of the
proposed change.  The proposed new or changed name or the proposed signs may not
identify a direct competitor of Tenant.

     Section 17.03.   LIMITATIONS ON LANDLORD'S RIGHTS.  Neither Tenant nor
Landlord shall install or permit installation of any signs, sculptures and/or
graphics which adversely reflect on the dignity or character of the Project as a
first-class office Project.  Except during the final nine (9) months of the Term
of this Lease, no "for rent' or other similar signs or flags, other than the
American flag and flag of the State in which the Buildings is located, may be
placed within the Project limits without Tenant's written approval, which shall
not be unreasonably withheld or delayed.

     Section 17.04.   COMPLIANCE WITH LAWS.  All signs installed by Landlord or
Tenant shall comply with applicable Laws and shall be installed in a good and
workmanlike manner.  Landlord must approve all exterior signage installed by
Tenant, such approval not to be unreasonably withheld.

                                   ARTICLE EIGHTEEN

                          SUBORDINATION AND NON-DISTURBANCE

     This Lease shall be subordinate and subject to any mortgages covering the
fee of the Project, and to all renewals, modifications or replacements thereof;
provided, however, that with respect to any existing mortgage, no later than the
date Tenant executes and delivers this Lease and, with respect to any future
mortgage, on or before the effective date thereof, Landlord shall obtain from
its mortgagee, a written agreement with Tenant generally in the form attached
hereto and marked EXHIBIT K.  The agreement shall be binding on their respective
legal representatives, successors and assigns and provide, among other
provisions, that so long as this Lease shall be in full force and effect (a)
Tenant shall not be joined as a defendant in any proceeding which may be
instituted to foreclose or enforce the mortgage; (b) Tenant's possession and use
of the Project in accordance with the provisions of this Lease shall not be
affected or disturbed by reason of the subordination to or any modification of
or default so long as Tenant is not in default under this Lease; and (c) the
mortgagee will make available to Landlord the insurance proceeds payable under
policies of insurance required to be carried by Landlord in Article Ten for the
purposes agreed upon in Article Ten.  If the mortgagee or any successor in
interest shall succeed to the rights of Landlord under this Lease, whether 


                                     -24-

<PAGE>


through possession, surrender, assignment, subletting, judicial or foreclosure
action, or delivery of a deed or otherwise, Tenant will attorn to and recognize
such successor-landlord as Tenant's landlord provided the successor-landlord
accepts such attornment and recognizes Tenant's rights of possession and use of
the Leased Premises in accordance with the provisions of this Lease.

                                   ARTICLE NINETEEN

                                   MECHANICS' LIENS

     During the Term, Tenant shall immediately discharge by payment, bond or
otherwise those mechanics' liens filed against the Project for work, labor,
services or materials claimed to have been performed at or furnished to the
Leased Premises for or on behalf of Tenant, except when the mechanics' liens are
filed by a contractor, supplier, materialman or laborer retained by Landlord, in
which event Landlord shall discharge the liens by payment, bond or otherwise.

                                    ARTICLE TWENTY

                               [INTENTIONALLY OMITTED]

                                  ARTICLE TWENTY-ONE

                               [INTENTIONALLY OMITTED]

                                  ARTICLE TWENTY-TWO

                                  TENANT'S SECURITY

     Section 22.01.  LIMITED RESTRICTIONS AGAINST OTHER TENANTS.  In order to
protect Tenant's trade secrets and confidential information and enhance security
in Buildings 1 and 3, Landlord agrees that with respect to Buildings 1 and 3,
Landlord will not lease or consent to any lease or sublease or assign this Lease
or consent to the assignment of any sublease to any Person which, as a major
part of its business (1) leases or sells data processing products,
telecommunications products, software products, printer products or other
products of the kind sold by Tenant, or (2) leases or sells parts or supplies
manufactured by Tenant for such products, or (3) furnished services for any of
such products, including programming, engineering, repair or maintenance, or (4)
offers training in the use, repair or application of any of such products.

     Section 22.02.  INCLUSION OF RESTRICTION IN OTHER LEASES AND SUBLEASES. 
Landlord shall include the foregoing prohibition in all tenant leases and
subleases which are executed after the date hereof and cover space in Building 1
and Building 3.

                                     -25-

<PAGE>


     Section 22.03.  ADVANCE CONSULTATION WITH TENANT.  Landlord shall consult
with Tenant before making any commitment which may violate this Article.

                                ARTICLE TWENTY- THREE

                               [INTENTIONALLY OMITTED]

                                 ARTICLE TWENTY-FOUR

                                       DEFAULT

     Section 24.01.  TENANT'S DEFAULT

     (a)  The occurrence of any of the following shall, at Landlord's option,
constitute an "Event of Default" by Tenant under this Lease:

          (1)  Failure to pay the Annual Rent, Additional Rent or any other sum
of money called for therein, or any part thereof, when due and continuation of
such failure for fifteen (15) days after notice from Landlord to Tenant;
provided, however, Landlord shall not be required to give such notice, and
Tenant shall not be entitled to such grace period, more than three times in any
twelve (12) month period;

          (2)  Failure to comply with or perform any of the other terms,
covenants, conditions or agreements to be complied with or performed by Tenant
under or pursuant to the terms of this Lease and continuation of such failure
for thirty (30) days after notice from Landlord to Tenant, or if the failure is
of such a character as cannot reasonably be cured within thirty (30) days,
failure to initiate within said thirty (30) day period such action as reasonably
can be taken toward curing the same and/or failure to prosecute such action as
diligently as is reasonably possible after said action is initiated and to cure
the default within seventy-five (75) days after the notice; provided, however,
Landlord shall not be required to give such notice, and Tenant shall not be
entitled to such grace period, more than three (3) times in any twelve (12)
month period;

          (3)  If Tenant shall file a voluntary petition in bankruptcy or shall
be adjudicated a bankrupt or insolvent or if any order for relief be entered
against Tenant in any federal bankruptcy proceeding, or, in any action or
proceeding, Tenant shall file any petition or answer seeking any reorganization,
arrangement, composition, readjustment, liquidation, dissolution or similar
relief under any present or future applicable federal, state or other statute or
law, or shall seek the consent to or acquiesce in the appointment of any
trustee, receiver or liquidator of Tenant or of all or substantially al of its
properties or of the Leased Premises; and

          (4)  If, within sixty (60) days after the commencement of any
proceeding 


                                     -26-
<PAGE>


against Tenant seeking any reorganization, arrangement, composition,
readjustment, liquidation, dissolution or similar relief under any present or
future federal bankruptcy act or any other present or future applicable federal,
state or other statute or law, such proceeding shall not have been dismissed, or
if, within sixty (60) days after the appointment, without consent or
acquiescence of Tenant, of any trustee, receiver or liquidator of Tenant or all
or substantially all of its properties or of the Leased Premises, such
appointment shall not have been vacated or stayed on appeal or otherwise, or if,
within sixty (60) days after the expiration of any such stay, such appointment
shall not have been vacated.

     (b)  Upon the occurrence of an Event of Default, Landlord, in addition to
all other rights and remedies available to Landlord by law or equity or by any
other provisions of this Lease, may at any time thereafter:

          (1)  declare to be immediately due and payable, on account of the rent
and other charges herein reserved for the balance of the Term of this Lease
(taken without regard to any early termination of said Term on account of
default), a sum equal to the Accelerated Rent Component (as hereinafter
defined), and Tenant shall remain liable to Landlord as hereinafter provided,
and/or;

          (2)  whether or not Landlord has elected to recover the Accelerated
Rent Component, terminate this Lease and, on the date specified in the notice of
termination, this Lease and the Term hereby demised and all rights of Tenant
hereunder shall expire and terminate and Tenant shall thereupon quit and
surrender possession of the Demised Premises to Landlord in the condition
elsewhere herein required and Tenant shall remain liable to Landlord as
hereinafter provided.

     (c)  For purposes of this Lease, the Accelerated Rent Component shall mean
the aggregate of:

          (1)  all Annual Rent, Additional Rent and other charges, payments,
costs and expenses due from Tenant to Landlord and in arrears at the time of the
election of Landlord to recover the Accelerated Rent Component;

          (2)  the Annual Rent reserved for the then entire unexpired balance of
the Term of this Lease (taken without regard to any early termination of the
Term by virtue of any default), plus Additional Rent and all other charges,
payments, costs and expenses herein greed to be paid by Tenant up to the end of
said Term which shall be capable of precise determination at the time of
Landlord's election to recover the Accelerated Rent Component, discounted to
present value at the then existing prime rate of CoreStates Bank, N.A.,
Philadelphia, Pennsylvania; and

          (3)  Landlord's good faith estimate of all charges, payments, costs
and expenses herein agreed to be paid by Tenant up to the end of said Term which
shall not be capable of precise determination as aforesaid (and for such
purposes no estimate of any 

                                     -27-

<PAGE>


component of Additional Rent shall be less than the amount which would be due if
each such component continued at the highest monthly rate or amount in effect
during the twelve (12) months immediately preceding the default) discounted to
present value at the then existing prime rate of CoreStates Bank, N.A.,
Philadelphia, Pennsylvania.

     (d)  In any case in which the Lease shall have been terminated, or in any
case in which Landlord shall have elected to recover the Accelerated Rent
Component and any portion of such shall remain unpaid, Landlord may, without
further notice, enter upon and repossess the Leased Premises, by summary
proceedings, ejectment or otherwise, and may dispose Tenant and remove Tenant
and all other persons and property from the Leased Premises and may have, hold
and enjoy the Leased Premises  and the rents and profits therefrom.  Landlord
may, in its own name, as agent for Tenant, if this Lease has not been
terminated, or in its own behalf, if this Lease has been terminated, relet the
Leased Premises or any part thereof for such term or terms (which may be greater
or less than the period which would otherwise have constituted the balance of
the term of this Lease) and on such conditions and provisions (which may include
concessions or free rent) as Landlord in its sole discretion may determine. 
Landlord may, in connection with any such reletting, cause the Leased Premises
to be redecorated, altered, divided, consolidated with other space or otherwise
changed or prepared for reletting.  No reletting shall be deemed a surrender and
acceptance of the Leased Premises.

     (e)  Tenant shall, with respect to all periods of time up to and including
the expiration of the Term of this Lease (or what would have been the expiration
date in the absence of default or breach) remain liable to Landlord as follows:

          (1)  In the event of termination of this Lease on account of Tenant's
default or breach, Tenant shall remain liable to Landlord for damages equal to
the rent and other charges payable under this Lease by Tenant as if this Lease
were still in effect, less the net proceeds of any reletting after deducting all
costs incident thereto (including without limitation all repossession costs,
brokerage and management commissions, operating and legal expenses and fees,
alteration costs and expenses of preparation for reletting) and to the extent
such damages shall not have been recovered by Landlord by virtue of payment by
Tenant of the Accelerated Rent Component (but without prejudice to the right of
Landlord to demand and receive the Accelerated Rent Component), such damages
shall be payable to Landlord monthly upon presentation to Tenant of a bill for
the amount due.

          (2)  In the event and so long as this Lease shall not have been
terminated after default or breach by Tenant, the rent and all other charges
payable under this Lease shall be reduced by the net proceeds of any reletting
by Landlord (after deducting all costs incident thereto as above set forth) and
by any portion of the Accelerated Rent Component paid by Tenant to Landlord, and
any amount due to Landlord shall be payable monthly upon presentation to Tenant
of a bill for the amount due.

     (f)  In the event Landlord shall, after default or breach by Tenant,
recover the Accelerated Rent Component from Tenant and it shall be determined at
the expiration of the 


                                     -28-
<PAGE>


term of this Lease (taken without regard to early termination for default) that
a credit is due Tenant because the net proceeds of reletting, as aforesaid, plus
the amounts paid to Landlord by Tenant exceed the aggregate of rent and other
charges accrued in favor of Landlord to the end of said term, Landlord shall
refund such excess to Tenant, without interest, promptly after such
determination.

     (g)  Landlord shall in no event be responsible or liable for any failure to
relet the Leased Premises or any part thereof, or for any failure to collect any
rent due upon a reletting, but Landlord agrees to use reasonable efforts to
mitigate damages.

     (h)  As a cumulative and alternative remedy of Landlord in the event of
termination of this Lease by Landlord following any breach or default by Tenant,
Landlord, at its option, shall be entitled to recover damages for such breach in
an amount equal to the Accelerated Rent Component (determined from and after the
date of Landlord's election under this subsection (g)) less the fair rental
value of the Leased Premises for the remainder of the term of this Lease (taken
without regard to the early termination), discounted to present value at the
then existing prime rate of CoreStates Bank, N.A, Philadelphia, Pennsylvania,
and such damages shall be payable by Tenant upon demand.

     (i)  Nothing contained in this Lease shall limit or prejudice the right of
Landlord to prove for and obtain as damages incident to a termination of this
Lease, in any bankruptcy, reorganization or other court proceedings, the maximum
amount allowed by any statute or rule of law in effect when such damages are to
be proved.

     (j)  If Annual Rent, Additional Rent or any other sum due from Tenant to
Landlord or payable by Tenant under this Lease shall be overdue for more than
ten (10) days, such overdue payment shall thereafter from its due date bear
interest at the rate of five percent (5%) per annum during such overdue period
in effect until paid by Tenant.

     (k)  No right or remedy herein conferred upon or reserved to Landlord is
intended to be exclusive of any other right or remedy herein or by law provided,
but each shall be cumulative and in addition to every right or remedy given
herein or now or hereafter existing at law or inequity.  No waiver by Landlord
or any breach by Tenant of any of Tenant's obligations, agreements or covenants
herein shall be a waiver of any subsequent breach or of any obligation,
agreement or covenant, nor shall any forbearance by Landlord to seek a remedy
for any breach by Tenant be a waiver by Landlord of any rights and remedies with
respect to such breach or any subsequent breach.  No re-entry or taking of
possession of the Leased Premises or making of repairs, alterations or
improvements thereto, or reletting thereof shall be construed as a election ont
he part of landlord to terminate this Lease unless written notice of such
intention is given under the terms hereof to Tenant.  The receipt by Landlord of
any sum payable under this Lease, with knowledge of the breach of any covenant
or agreement (other than the prior failure to pay such sum) shall not constitute
a waiver or cure of such breach or prevent Landlord from exercising any of its
rights or remedies hereunder on account of Tenant's breach.  Landlord shall be
entitled, to the extent permitted by law, to injunctive 


                                     -29-
<PAGE>


relief in case of the violation, or attempted or threatened violation, of any
covenant, agreement, condition or provision of this Lease, or to a decree
compelling performance of any covenant, agreement, condition or provision of
this Lease, or to any other remedy allowed by law or in equity.

     Section 24.02.   DEFAULT BY LANDLORD.  In the event that Landlord shall
fail to perform any of its obligations under this Lease and shall fail to cure
such default within 10 days after Tenant shall have given written notice of such
default, and within ten (10) days of Tenant giving further notice of its intent
to exercise the remedies provided in this Section 24.02, to Landlord and to any
mortgagees of Landlord (provided that Landlord shall have informed Tenant of
such mortgagee's name and address) or, with respect to a default that cannot
reasonably be cured within 10 days, if Landlord or any such mortgagee fails to
commence to cure such default within such period and to diligently pursue such
cure to completion, then a Landlord default ("Landlord Default") shall be deemed
to have occurred, and Tenant shall have the following rights.  Tenant shall have
the right to cure the default and after effecting such cure the reasonable cost
thereof shall be reimbursed to Tenant by Landlord within 15 days after receiving
Tenant's invoices, failing which Tenant, in addition to all remedies available
at law or in equity to collect such costs, may withhold the amount thereof from
Additional Rent (but not Annual Rent).  In addition to the foregoing, Tenant
shall be entitled to all remedies available at law and in equity for a Landlord
Default.  For purposes of this Section 24.02, any cure by a mortgagee of
Landlord shall be deemed to be a cure by Landlord.  Any improper exercise of
Tenant's right hereunder to withhold all or any portion of the Additional Rent
shall constitute a default of Tenant as of the date of the improper withholding.

                                 ARTICLE TWENTY-FIVE

                                       HOLDOVER

     If Tenant, or any person claiming by or under Tenant, remains in possession
of the Leased Premises after the expiration of the Lease Term, then in addition
to all other rights and remedies provided in this Lease or by law or in equity,
Landlord shall be entitled to receive from Tenant (a) as agreed damages for such
unlawful retention, an amount, calculated on a per diem basis for each day of
unlawful retention, equal to twice the Annual Rent for such period, or the
established market rental of the Leased Premises, whichever is greater, plus (b)
Additional Rent and all other damages, costs and expenses sustained or incurred
by Landlord by reason of such unlawful retention.  Without in any way limiting
Landlord's rights or remedies or creating any additional rights or privileges
for Tenant during any period when Tenant is wrongfully holding over, all powers
granted to Landlord by this Lease may be exercised and all obligations imposed
upon Tenant by this Lease shall be performed by Tenant both during the Lease
Term hereof and during any period of holdover or extension of the Lease Term,
whether or not such holdover or extension constitutes and Event of Default under
this Lease.

                                     -30-
<PAGE>


                                  ARTICLE TWENTY-SIX

                                       NOTICES

     Any notice, request or demand under this Lease shall be in writing, and
shall be considered properly delivered when addressed as hereinafter provided,
and (a) served personally, (b) registered or certified (return receipt
requested) and deposited in a United States general or branch post office, or
(c) sent by a private express mail carrier or nationally recognized next day
delivery service.  Any notice, request or demand by Tenant to Landlord shall be
addressed to Landlord at Hamlin/Shidler Investment Corporation, One Logan
Square, Suite 1105, Philadelphia, Pennsylvania 19103, Attention:  Clay W.
Hamlin, III, President (telephone, 215-567-1800 and telecopy, 215-567-1907)until
otherwise directed in writing by Landlord and, if requested in writing by
Landlord, simultaneously served on or sent to Landlord's first mortgagee at the
address specified in such request.  Any notice, request or demand by Landlord to
Tenant shall be addressed to Tenant at IBM - Real Estate Services, Old Orchard
Road, Armonk, New York 10504, Attention:  Legal Counsel with copies addressed
simultaneously to Tenant at IBM - Real Estate Services, 150 Kettletown Road,
Southbury, Connecticut 06488 and Tenant's Administration Manager at the Leased
Premises, until otherwise directed in writing by Tenant.  Rejection or other
refusal to accept a notice, request or demand, or the inability to deliver the
same because of a changed address of which no notice was given, shall be deemed
to be receipt of the notice, request or demand sent.

                                 ARTICLE TWENTY-SEVEN

                              ASSIGNMENT AND SUBLETTING

     Section 27.01.   ASSIGNMENT OR SUBLEASE.  Other than an assignment or
subletting to a party referred to in (a) or (b) below, Tenant shall not assign
or sublet any part of the Leased Premises without Landlord's prior written
consent, which shall not be unreasonably withheld.  Notwithstanding anything
contained in this Lease to the contrary, Tenant shall not sublease more than
30,000 square feet of office space (excluding warehouse space which may be
sublet without use restriction and with no limitation in rental rate) in the
aggregate of the Leased Premises, and the rent for any such sublease shall not
be for an amount less than $8.50 per square foot net before the earlier of (i)
36 months from the Commencement Date or (ii) the date 100,000 rentable square
feet of space in Landlord's building known generally as Building 2 on Lot No. 1
shown on the Subdivision Plan (as defined in EXHIBIT H) has been leased. 
Provided that the use by the assignee or sublessee complies with the
requirements of Article 8 of this Lease, Tenant may, without Landlord's consent,
assign this Lease or sublease all or any part of the Leased Premises at any time
during the Term to (a) an Affiliated Person of Tenant or (b) a successor entity
created by merger, reorganization, recapitalization, or acquisition.  For
purposes of this Section, the words "Affiliated Person of Tenant" mean a Person,
directly or indirectly, through one or more intermediaries, controlled by Tenant
or under common control with Tenant.  Tenant shall pay to Landlord one-half of
the amount of assignment or sublet proceeds (net of 


                                     -31-

<PAGE>

commissions, tenant improvements and other expenses) in excess of $8.50 per
square foot in connection with any assignment or sublease to parties other than
those referred to in (a) and (b) above.

     Section 27.02.   LIABILITY OF IBM.  If Tenant assigns or sublets hereunder,
Tenant shall notify Landlord thereof and Tenant shall remain responsible for the
faithful performance and observance of all of its covenants and obligations set
forth in this Lease.  Landlord agrees that if Tenant assigns this Lease and the
assignee defaults and fails to cure such default within the applicable grace
period provided in Article Twenty-Four, Tenant shall have the right to recover
possession of the Leased Premises by curing the assignee's default within such
grace period.

                                 ARTICLE TWENTY-EIGHT

                             EQUAL EMPLOYMENT OPPORTUNITY

     There are incorporated in this Lease the provisions of Executive Order
11246 (as amended) of the President of the United States on Equal Employment
Opportunities and the rules and regulations issued pursuant thereto with which
Landlord represents that it will comply unless exempted.

                                 ARTICLE TWENTY-NINE

                                   QUIET ENJOYMENT

     Provided Tenant performs the covenants and obligations in this Lease on
Tenant's part to be performed, Landlord covenants and agrees to take all
necessary steps to secure and to maintain for the benefit of Tenant the quiet
and peaceful possession of the Leased Premises, the Common Buildings Facilities
and Buildings Parking Area for the Term, without hindrance, claim or molestation
by Landlord or any other Person claiming by, through or under Landlord.

                                    ARTICLE THIRTY

                                        WAIVER

     Failure by either party to complain of any action, inaction or default of
the other party shall not constitute a waiver of the aggrieved party's rights
hereunder.  Waiver by either party of any right to claim a default of the other
party shall not constitute a waiver of any right to claim a subsequent default
of the same obligation or to claim any other default, past, present or future. 
Landlord and Tenant hereby waive trial by jury in any action, proceeding or
counterclaim brought by either against the other concerning any matters
whatsoever arising out of or in any way connected with this Lease or the
relationship of the parties hereunder.


                                     -32-
<PAGE>


                                  ARTICLE THIRTY-ONE

                                  PARTIAL INVALIDITY

     If any covenant, condition or provision of this Lease, or the application
thereof to any Person or circumstance, shall be held to be invalid or
unenforceable, then in each such event the remainder of this Lease or the
application of such covenant, condition or provision to any other Person or any
other circumstance (other than those as to which it shall be invalid or
unenforceable) shall not be thereby affected, and each covenant, condition and
provision hereof shall remain valid and enforceable to the fullest extent
permitted by the Laws.

                                  ARTICLE THIRTY-TWO

                                RULES AND REGULATIONS

     Section 32.01.   TENANT'S OBLIGATION.  Tenant shall abide by and observe
the rules and regulations marked EXHIBIT F and such other rules and regulations
which are necessary for the safety, security, care and appearance of the Project
or the preservation of good order therein, or for the operation and maintenance
of the Project or equipment therein (the "Rules and Regulations"); provided the
same are in conformity with common practice and usage in similar buildings, are
not inconsistent with the provisions of this Lease and apply to all tenants and
occupants of the Buildings, and provided further that a copy thereof is received
by Tenant.

     Section 32.02.   STANDARDS APPLICABLE TO LANDLORD.  Landlord shall (a) not
discriminate against Tenant in enforcing the Rules and Regulations; (b) not
unreasonably withhold or delay its consent to any approval required by Tenant
under the Rules and Regulations, and (c) exercise its judgment in good faith in
any instance when the exercise of Landlord's judgment under the Rules and
Regulations is required.

     Section 32.03.   LANDLORD'S ENFORCEMENT.  Landlord shall use reasonable
efforts to obtain compliance of the Rules and Regulations by all tenants and
other occupants within the Project limits, but Landlord may permit reasonable
waivers so long as such waivers do not unreasonably interfere with or materially
and adversely affect Tenant in the conduct of its business in the Leased
Premises or violate any rights granted to Tenant under this Lease.

     Section 32.04.   CONFLICT.  If there is a conflict between or ambiguity
created by the provisions of this Lease and Rules and Regulations published
pursuant to this Article, the provisions of this Lease shall control and be
binding on the parties hereto.

                                 ARTICLE THIRTY-THREE

                                ESTOPPEL CERTIFICATES


                                         -33-
<PAGE>


     Section 33.01.   TENANT'S ESTOPPEL CERTIFICATE.  Tenant agrees, at any time
and from time to time, upon not less than ten (10) days prior notice from
Landlord, to execute, acknowledge and deliver to Landlord or any Person
designated by Landlord a statement in writing (1) certifying that this Lease is
unmodified and in full force and effect (or if there have been modifications,
that this Lease is in full force and effect as modified and stating the
modifications); (2) whether or not the Term has commenced and if it has
commenced, stating the dates to which the Annual Rent and Additional Rent have
been paid by Tenant, and (3) stating, to the best of Tenant's knowledge, whether
or not Landlord is in default in the performance of any covenant, agreement or
condition contained in this Lease, and if Tenant has knowledge of such a
default, specifying each such default.

     Section 33.02.   LANDLORD'S ESTOPPEL CERTIFICATE.  Prior to commencement of
and during the Term Landlord shall, within ten (10) days after Tenant's request,
deliver an estoppel certificate to Tenant or any Person designated by Tenant
relative to the status of this Lease and/or any ground lease, underlying lease
and/or mortgage encumbering the Project.

                                 ARTICLE THIRTY-FOUR

                                  EXECUTION OF LEASE

     THIS DOCUMENT SHALL NOT BE A VALID AGREEMENT WHICH IS BINDING ON EITHER
PARTY HERETO UNTIL AT LEAST ONE (1) COUNTERPART, EXECUTED BY DULY AUTHORIZED
REPRESENTATIVES OF LANDLORD AND TENANT, HAS BEEN DELIVERED BY EACH PARTY TO THE
OTHER.

                                 ARTICLE THIRTY-FIVE

                                     COUNTERPARTS

     When several counterparts of this Lease have been executed, each shall be
considered an original for all purposes; provided, however, that all
counterparts shall, together, constitute one and the same instrument.

                                  ARTICLE THIRTY-SIX

                                       ANTENNA

     Tenant, at its cost, may install and, once installed, modify and maintain a
microwave, satellite or other antenna communications system on the roof of the
Buildings for use in connection with Tenant's business.  Tenant shall furnish
detailed plans and specifications for the system (or modification) to Landlord
for approval, which approval shall not be unreasonably withheld or delayed. 
Upon approval, the system shall be installed, at Tenant's expense, by a
contractor selected in the manner agreed to in Section 13.02.  Tenant is hereby
granted such easements and licenses for (a) use of any Buildings shafts and
other Common 

                                       -34-
<PAGE>

Buildings Facilities required to install the electrical or communication wiring,
(b) access to the roof at all reasonable times and in emergencies and (c) use of
a mutually agreed upon area of the roof to install and operate the system. 
Tenant shall be responsible for maintenance of the Common Buildings Facilities,
Buildings and roof associated with the antenna and for procuring whatever
licenses or permits may be required for the use or operation of the system, and
Landlord makes no warranties or representations as to the permissibility of the
system under applicable Laws.  The system shall not constitute a nuisance or
unreasonably interfere with the operations of Landlord or other tenants
occupying the Project.  Landlord agrees that after the date Tenant installs its
system, Landlord will not permit the installation of a similar system on the
roof of the Buildings by any Person without Tenant's prior written approval,
which approval shall not be unreasonably withheld or delayed; provided that
Tenant may withhold approval where the installation and/or operation of the
other system would interfere with the operation of Tenant s system. 
Notwithstanding any other provision of this Lease to the contrary, Tenant shall
remove Tenant's rooftop communications system in accordance with Article 16 of
this Lease.

                                 ARTICLE THIRTY-SEVEN

                                        BROKER

     Each party warrants that it has had no dealings with any broker or agent in
connection with the negotiation or execution of this Lease except as may be
specified in Section 1 hereof and each party agrees to indemnify the other
against all costs, expenses, attorneys fees or other liability for commission or
other compensation or charges claimed by any other broker or agent claiming the
same by, through or under said party.

                                 ARTICLE THIRTY-EIGHT

                                     ARBITRATION

     Section 38.01.   APPLICABILITY.

     (a)  If arbitration is agreed upon hereunder as a dispute resolution
procedure, the arbitration shall be conducted as provided in this Article.  All
proceedings shall be conducted according to the Commercial Arbitration Rules of
the American Arbitration Association, except as hereinafter provided.  No action
at law or in equity in connection with any such dispute shall be brought until
arbitration hereunder shall have been waived, either expressly or pursuant to
this Article.  The judgement upon the award rendered in any arbitration
hereunder shall be final and binding on both parties hereto and may be entered
in any court having jurisdiction thereof.

     (b)  During an arbitration proceeding pursuant to this Article, the parties
shall continue to perform and discharge all of their respective obligations
under this Lease, except as otherwise provided in this Lease.

                                     -35-
<PAGE>


     Section 38.02.   NOTICE AND DEMAND.  All disputes that may be arbitrated in
accordance with this Article shall be raised by notice to the other party, which
notice shall state with particularity the nature of the dispute and the demand
for relief, making specific reference by article number and title of the
provisions of this Lease alleged to have given rise to the dispute.  The notice
shall also refer to this Article and shall state whether or not the party giving
the notice demands arbitration under this Article.  If no such demand is
contained in the notice, the other party against whom relief is sought shall
have the right to demand arbitration under this Article within five (5) business
days after such notice is received.  Unless one of the parties demands
arbitration, the provisions of this Article shall be deemed to have been waived
with respect to the dispute in question.

     Section 38.03.   SELECTION OF ARBITRATOR.  Tenant and Landlord shall
mutually and, promptly select one person who has demonstrated at least ten (10)
years experience in commercial real estate matters and, in particular, the
subject matter of the dispute, to act as arbitrator hereunder.  If a selection
is not made within thirty (30) days after a demand for arbitration is made, upon
the request of either party the arbitrator shall be appointed by The American
Arbitration Association. The arbitration proceedings shall take place at a
mutually acceptable location in Philadelphia, Pennsylvania.

     Section 38.04.   SCOPE.

     (a)  When resolving any dispute, the arbitrator shall apply the pertinent
provisions of this Lease without departure therefrom in any respect.  The
arbitrator shall not have the power to change any of the provisions of this
Lease, but this Section shall not prevent in any appropriate case the
interpretation, construction and determination by the arbitrator of the
applicable provisions of this Lease to the extent necessary in applying the same
to the matters to be determined by arbitration.  The arbitrator shall limit his
or her deliberations to the following issues only and no others:

          (1)  under Article Six, Nine or Twenty-Four of this Lease (a) whether
a party has committed an event of default, (b) whether a party either has failed
to cure the default within the grace period allowed by the provisions of this
Lease for curing the default or, having eventually cured the default,
nevertheless has failed to proceed with due diligence, or (c) whether the length
of time specified by Tenant in a notice of default given under Article Six, Nine
or Twenty-Four was reasonable, taking into consideration the nature of the
default and surrounding circumstances (such as availability of parts, required
municipal approvals, and effect of the default on occupants and invitees of the
Project) existing at the time notice was given.

          (2)  whether an item included in Landlord's Statement as Operating
Expenses or Real Estate Taxes is properly includable pursuant to Article Three.

     (b)  The right of Landlord and Tenant to submit a dispute to arbitration is
limited to 

                                        -36-
<PAGE>

issues agreed in this Lease to be submitted to arbitration.

                                 ARTICLE THIRTY-NINE

                                   EXCUSABLE DELAY

     Whenever a party hereto is required by the provisions of this Lease to
perform an obligation and such party is prevented beyond its reasonable control
from doing so by reason of an Excusable Delay, such party shall be temporarily
relieved of its obligation to perform, provided it promptly notifies the other
party of the specific delay and exercises due diligence to remove or overcome
it.  The words "Excusable Delay" shall mean any delay due to strikes, lockouts
or other labor or industrial disturbance; civil disturbance; future order of any
government, court or regulatory body claiming jurisdiction; act of the public
enemy; war, riot, sabotage, blockade or embargo; failure or inability to secure
materials, supplies or labor through ordinary sources by reason of shortages or
priority or similar regulation or order of any government or regulatory body;
lightning, earthquake, fire, storm, hurricane, tornado, flood, washout or
explosion, or act or omission of one party hereto which prevents the party
claiming delay from complying, or which materially and adversely interferes with
the claiming party's ability to comply with an obligation under this Lease on
its part to be performed.

                                    ARTICLE FORTY

                                    MISCELLANEOUS

     Section 40.01.   RULES OF INTERPRETATION.  This Lease shall be strictly
construed neither against Landlord or Tenant; each provision hereof shall be
deemed both a covenant and a condition running with the Land; except as
otherwise expressly provided in this Lease and its Exhibits and other
attachments, the singular includes the plural and the plural includes the
singular; "or" is not exclusive; a reference to an agreement or other contract
includes supplements and amendments thereto to the extent permitted by this
Lease; a reference to the Laws includes any amendment or supplement to such
Laws; a reference to a Person includes its permitted successors and assigns;
accounting provisions have the meanings assigned to them by generally accepted
accounting principles and practices applied on a consistent basis; the words
"such as," "include," "includes" and "including" are not limiting; except as
specifically agreed upon in this Lease, any right may be exercised at any time
and from time to time and all obligations are continuing obligations throughout
the Term, and in calculating any time period, the first day shall be excluded
and the last day shall be included and all days are calendar days unless
otherwise specified.

     Section 40.02.   NO EXCLUSIVE REMEDIES.  No remedy or election given by any
provision in this Lease shall be deemed exclusive unless so indicated, but each
shall, wherever possible, be cumulative in addition to all other remedies at law
or in equity which either party may have arising out of an event of default of
the other party.

                                       -37-
<PAGE>


     Section 40.03.   PROJECT CONTRACTORS AND SUPPLIERS.  Except as otherwise
specifically set forth in this Lease, Landlord hereby covenants and represents
that Tenant may deal with any Person for services (including food and vending
services), supplies, materials, labor, equipment, transportation, tools,
machinery and any other similar or dissimilar services or items in connection
with the use and occupation of the Leased Premises and any work performed
therein.

     Section 40.04.   GOVERNING LAWS.  This Lease shall be governed in all
respects by the Laws of the State in which the Project is located.

     Section 40.05.   NON-DISCLOSURE OF LEASE.

     (a)  Prior to the Commencement Date, Landlord and its agents, employees and
contractors shall not disclose the existence of this Lease without Tenant's
written consent.

     (b)  Landlord, its agents, employees and contractors shall keep the
provisions of this Lease in confidence and shall not publish or disclose the
same at any time during the Term except as permitted by Article Forty-One.

     (c)  This Section shall not apply to disclosures that must be made by
Landlord or Tenant to obtain financing for, or in connection with any sale or
leasing of any portion of,  any portion of the Project.

                                  ARTICLE FORTY-ONE

                                 MEMORANDUM OF LEASE

     Neither this Lease nor any memorandum of this Lease shall be recorded by
either Landlord or Tenant.

                                  ARTICLE FORTY-TWO

                                  BINDING AGREEMENT

     This Lease shall bind and inure to the benefit of Landlord and its
executors, distributees and heirs, and to Tenant's and Landlord's respective
representatives, successors and permitted assigns.

                                 ARTICLE FORTY-THREE

                                ENVIRONMENTAL MATTERS

                                          -38-
<PAGE>


     (a)  Except as otherwise specifically provided in this Lease, (i) this
Lease is not intended to address the rights and liabilities of the parties with
respect to Environmental Conditions at the Property, compliance with
Environmental Laws, Compliance with ISRA and Compliance with the ACO, as such
terms are defined in the Environmental Indemnification Agreement by and between
Landlord, as purchaser by assignment from Hamlin/Shidler Investment Corporation,
and Tenant, as seller, dated August 11, 1994, as it may be amended, (the
"Environmental Agreement"), and (ii) the Environmental Agreement sets forth the
entire and exclusive rights and obligations of the parties with respect to
Environmental Conditions at the Property, compliance with Environmental Laws,
Compliance with ISRA and Compliance with the ACO, as such terms are defined in
the Environmental Agreement.

     (b)  Beginning on the Commencement Date and continuing during the term of
this Lease and thereafter until Seller has fully completed the groundwater
remediation at the Property, Tenant shall reimburse Landlord in an amount up to
Fifteen Thousand Dollars ($15,000.00) annually for Landlord's cost of engaging
environmental consultants to monitor the Tenant's groundwater remediation
activities at or in connection with the Property.  Such amounts shall be
reimbursed by Tenant by submission of copies of invoices from Landlord's
consultants.  Tenant's obligations under this Section 43(b) shall be applicable
notwithstanding anything to the contrary contained in this Agreement or the
Environmental Agreement.  This Section 43(b) shall survive expiration or sooner
termination of this Lease.

     (c)  Tenant's obligation to pay Annual Rent and Additional Rent shall
continue without deduction, offset or abatement, in the event that Tenant is
unable to use the Leased Premises in whole or in part, as a direct result of
investigation or remediation activities undertaken by Tenant, or on behalf of
Tenant with Tenant's approval, at the Property in connection with Tenant's
environmental remediation obligations under the Environmental Agreement,
including Tenant's Compliance with ISRA and Compliance with the ACO.

                                  ARTICLE FORTY-FOUR

                               [INTENTIONALLY OMITTED]

                                  ARTICLE FORTY-FIVE

                               [INTENTIONALLY OMITTED]

                                  ARTICLE FORTY-SIX

                                   ENTIRE AGREEMENT

     This Lease, including all Exhibits and other attachments referred to
herein, contains the entire agreement of Landlord and Tenant with respect to the
matters stated herein, and may not be modified except by an instrument in
writing which is signed by both parties and delivered 

                                       -39-
<PAGE>

by each to the other.  Exhibits and such other attachments are incorporated
herein as fully as if their contents were set out in full at each point of
reference to them.

                                 ARTICLE FORTY-SEVEN

                              TERMINATION OF FIRST LEASE

     This Lease is intended to replace and supersede the First Lease, from and
after the Commencement Date.  Accordingly, Landlord and Tenant agree that the
First Lease shall be terminated as of the Commencement Date with the same force
and effect as if such date were the date originally set forth in the First Lease
for the termination thereof.  The foregoing shall not be construed to relieve
either Landlord or Tenant from any liability or obligation arising or accruing
under the First Lease prior to the Commencement Date.

     IN WITNESS WHEREOF, this Lease has been executed by the duly authorized
representatives of Landlord and Tenant as of the date first above written.


                                        LANDLORD:

                                        SOUTH BRUNSWICK INVESTORS, 
                                        L.P., a Delaware limited partnership

                                        By:  SOUTH BRUNSWICK 
                                        INVESTMENT COMPANY, L.L.C.


                                        By:_____________________________
                                           Clay W. Hamlin, III,
                                           Authorized Member


                                        TENANT:

     
ATTEST:                                 INTERNATIONAL BUSINESS 
                                        MACHINES CORPORATION


________________________                By:_____________________________

                                        -40-
<PAGE>


                                   EXHIBIT A1 TO A4

                            FLOOR PLANS OF LEASED PREMISES

                                        
<PAGE>

                                      EXHIBIT B

                                SUPPLEMENTAL AGREEMENT

     By this Supplemental Agreement dated _______________, 1995, the parties to
Amended and Restated Lease dated _______________, 1995 made by and between SOUTH
BRUNSWICK INVESTORS, L.P., as Landlord and INTERNATIONAL BUSINESS MACHINES
CORPORATION, as Tenant, agree as follows with respect to the Leased Premises
located at 431 Ridge Road, Dayton, New Jersey.

     1.   The Work (Tenant's Improvements and Base Building), if any, required
to be constructed and finished by Landlord in accordance with the provisions of
the Lease has been Substantially Completed by Landlord and accepted by Tenant.

     2.   The Leased Premises have been delivered to and accepted by Tenant.

     3.   The Commencement Date of the Lease is ____________ __, 19__, and the
expiration date is March 31, 2002, subject, however, to the provisions of the
Lease.

     4.   The Leased Premises consists of 200,000 square feet of rentable area.

     5.   Commencing on the Rent Commencement Date (as defined in the Lease) the
Annual Rent shall be $1,700,000.00, payable in equal monthly installments of
$141,666.67, subject, however, to the provisions of the Lease.  The Annual Rent
has been calculated at the annual rate of $8.50 per square foot of rentable area
of the Leased Premises.

     IN WITNESS WHEREOF, this Supplemental Agreement has been executed by the
duly authorized representatives of Landlord and Tenant as of the date first
above written.

                                        Landlord:

                                        SOUTH BRUNSWICK INVESTORS, L.P., a 
                                        Delaware limited partnership

                                        By:  SOUTH BRUNSWICK INVESTMENT
                                               COMPANY, L.L.C.

                                        By:_________________________________
                                             Clay W. Hamlin, III
                                             Authorized Officer

                                        Tenant:

                                        INTERNATIONAL BUSINESS MACHINES 
                                        CORPORATION,  a New York corporation

                                        By:_________________________________
                                             Name:

<PAGE>


                                             Title:

<PAGE>

                                      EXHIBIT C

                HEAT, VENTILATION AND AIR CONDITIONING SPECIFICATIONS


Landlord shall provide heat, ventilation and air conditioning on a year-round
basis throughout the Leased Premises and Common Buildings Facilities.  The
equipment shall be capable of maintaining the following indoor design
conditions:

     Winter:   72 degrees FDB with 30% RH
     Summer:   78 degrees FDB with 55% RH

The equipment shall permit operation within the parameters defined by the
"Comfort Chart" shown in the latest edition of ASHRAE Standard 55, "Thermal
Environmental Conditions For Human Occupancy.

The minimum outdoor air supply rates shall not be less than 0.15 cfm/npsf or 20
cfm/person of outdoor air, whichever is greater.  Outdoor air for ventilation
shall meet the requirements of the latest edition of ASHRAE Standard 62,
"Ventilation For Acceptable Indoor Air Quality."

The central HVAC equipment shall be capable of cooling a process load (personal
computers) in every work station.  The planning load for each workstation is 250
watts.

Systems serving general office areas shall be equipped with 80% efficiency
filters, rateDEG. d in accordance with the atmospheric dust spot method per
ASHRAE Standard 52, "Method Of Testing Air Cleaning Devices Used In General
Ventilation For Removing Particulate Matter."

Tenant represents to Landlord that the Buildings equipment meets the above
criteria as of the Commencement Date.

<PAGE>

                                      EXHIBIT D

                                INTENTIONALLY OMITTED

<PAGE>

                                      EXHIBIT E

                                BUILDING PARKING AREA

<PAGE>

                                      EXHIBIT F

                                RULES AND REGULATIONS


     1.   No sign, lettering, picture, notice or advertisement shall be placed
on any outside window or in any position so as to be visible from outside the
Buildings.

     2.   Tenant, its customers, invitees, licensees, and guests shall not
obstruct sidewalks, entrances, passages, courts, corridors, vestibules, halls,
elevators and stairways in and about the Buildings.  Tenant shall not place
objects against glass partitions or doors or windows or adjacent to any open
common space which would be unsightly from the Buildings corridors or from the
exterior of the Buildings, and will promptly remove the same upon notice from
Landlord.

     3.   Without the prior written consent of Landlord, Tenant shall not make
noises, cause disturbances, create vibrations, odors or noxious fumes or use or
operate any electrical or electronic devices or other devices that emit sound
waves or are dangerous to other tenants and occupants of the Buildings or that
would interfere with the operation of any device or equipment or radio or
television broadcasting or reception form or within the Buildings or elsewhere
and shall not place or install any projections, antennae, aerials or similar
devices inside or outside of the premises.

     4.   Tenant shall not make any room-to-room canvass to solicit business
from other tenants in the Buildings, and shall not exhibit, sell or offer to
sell, use, rent or exchange any item or services in or from the Leased Premises
unless ordinarily embraced within the Tenant's use of the Leased Premises as
specified in its Lease.

     5.   Tenant shall not waste electricity or water and agrees to cooperate
fully with Landlord to assure the most effective operation of the Buildings
heating and air conditioning and shall refrain from attempting to adjust any
controls.  Tenant shall keep public corridor doors closed.

     6.   Bicycles shall not be permitted in the Buildings in other than
Landlord-designated locations.

     7.   Tenant assumes full responsibility for protecting its space from
theft, robbery and pilferage, which includes keeping doors locked and other
means of entry to the Leased Premises closed and secured.

     8.   Peddlers, solicitors and beggars shall be reported to the office of
the Building or as Landlord otherwise requests.

     9.   Tenant shall neither install nor operate machinery or any mechanical
devices of a nature not directly related to Tenant's ordinary use of the Leased
Premises without the 

<PAGE>

written permission of the Landlord.

     10.  No person or contractor not employed by Landlord shall be used to
perform window washing, cleaning in the Leased Premises.

     11.  Unless Landlord so consents, Tenant shall not, and Tenant shall not
permit or suffer anyone to:

          (i)  Cook in the Leased Premises;

     12.  Tenant shall not:

          (i)   Use the Leased Premises for lodging or for any immoral or 
                illegal purposes.

          (ii)  Use the Leased Premises to engage in the manufacture or sale of,
                or permit the use of, any spirituous, fermented, intoxicating or
                alcoholic beverages on the Leased Premises.

          (iii) Use the Leased Premises to engage in the manufacture or 
                sale of, or permit the use of, any illegal drugs on the 
                Leased Premises.

     13.  In no event shall any person bring into the Buildings inflammables
such as gasoline, kerosene, naptha and benzene, or explosives or firearms or any
other article of intrinsically dangerous nature.  If by reason of the failure of
Tenant to comply with the provisions of this paragraph, any insurance premium
payable by Landlord for all or any part of the Buildings shall at any time be
increased above normal insurance premiums for insurance not covering the items
aforesaid, Landlord shall have the option to either terminate the Lease or to
require Tenant to make immediate payment for the whole of the increased
insurance premium.

     14.  Tenant shall cooperate and participate in all security programs
affecting the Buildings.

     15.  Tenant shall cause all floors within the Premises to be carpeted;
provided that areas such as kitchens, utility closets, entrances, photo-copying
areas and other similar areas may contain another type of floor-covering if
Tenant first obtains written approval from Landlord.

     16.  Tenant shall not drill, or permit to be drilled, any holes in any
window frames (mullions) located within the Premises.

Landlord shall have the right from time to time to prescribe additional rules
and regulations 

                                        -2-
<PAGE>

which, in its judgement, may be desirable for the use, entry, operation and
management of the Premises and Buildings, each of which rules and regulations
and any amendments thereto shall become a part of this Lease without further
action of the parties.  Tenant shall comply with all such rules and regulations;
provided, however, that such rules and regulations shall not substantially
diminish any right or privilege herein expressly granted to Tenant.

                                         -3-
<PAGE>


                                      EXHIBIT G

                                INTENTIONALLY OMITTED


<PAGE>


                                      EXHIBIT H

     ALL THAT CERTAIN lot, tract, or parcel of land, together with buildings and
improvements thereon, situate, lying and being in the Township of South
Brunswick, County of Middlesex, State of New Jersey and known as Lot No. 2
(31.748 acres +/-) as more particularly bounded and described according to a 
plan prepared by Ezra Golub & Associates, Registered Professional Engineers 
and Registered Land Surveyors of Levittown, Pennsylvania dated April 7, 1995 
and numbered D26320303 (the "Subdivision Plan"), as follows to wit:

                      (Describe Lot No. 2 by metes and bounds.)


<PAGE>

                                      EXHIBIT I

                                   LIST OF HOLIDAYS 

<PAGE>

                                      EXHIBIT J

                                INTENTIONALLY OMITTED


<PAGE>


                                      EXHIBIT K

                SUBORDINATION, ATTORNMENT AND NONDISTURBANCE AGREEMENT


     THIS AGREEMENT, made this _____day of ___________, 19__, by and between
INTERNATIONAL BUSINESS MACHINES CORPORATION, a New York corporation, having its
principal office at Old Orchard Road, Armonk, New York ("IBM") and
_____________________________________ a _______________ banking corporation,
having its principal office at _______________________________ ("Mortgagee").


                                     WITNESSETH:

     WHEREAS, _____________________________ ("Landlord") and IBM have entered
into a lease (the "Lease") dated _______________ of certain commercial office
space described therein (the "Premises") located in ___________________________ 
and erected on the tract of land described in EXHIBIT H, attached hereto and
made a part hereof; and

     WHEREAS, Landlord had made, executed and delivered to Mortgagee a certain
promissory note secured by a first lien Deed of Trust (the "Mortgage") on the
land and a building thereon of which the Premises are a part; and

     WHEREAS, the Lease will be assigned by Landlord to Mortgagee as further
security for the promissory note.

     NOW, THEREFORE, in consideration of the foregoing and the mutual promises
hereinafter contained and other good and valuable consideration, the receipt and
sufficiency which are hereby acknowledged, IBM and Mortgagee, intending to be
legally bound hereby, covenant and agree as follows:

     1.   The Lease shall be subject and subordinate to the lien of the Mortgage
and to all of the terms, conditions and provisions thereof, to all advances made
or to be made thereunder, and to any renewals, extensions, modifications or
replacements thereof.

     2.   Provided IBM is not in default beyond the applicable grace period
provided for in the Lease:

          (a)  IBM shall not be joined as an adverse or party defendant in any
action or proceeding which may be instituted, or commenced by Mortgagee to
foreclose or enforce the Mortgage.

          (b)  IBM shall not be evicted from the Premises nor shall any of IBM's
rights under the Lease be affected or disturbed in any way by reason of this
subordination or any modifications of or default under the Mortgage.

<PAGE>


          (c)  IBM's leasehold estate under the Lease shall not be terminated or
disturbed during the term of the Lease, as it may be extended, by reason of any
default under the Mortgage.

          (d)  Mortgagee hereby agrees to make available to Landlord the
insurance proceeds otherwise payable to Landlord and/or Mortgagee, when and to
the extent necessary, subject to Mortgagee's right to control the disbursement
of such proceeds, for Landlord to comply with its obligations of repair and
restoration as required by the provisions of the Lease.

          (e)  If Mortgagee or any successor in interest to it shall succeed to
the rights of Landlord under the Lease, whether through possession; termination
or cancellation of the Lease, surrender, assignment, judicial action,
sublettings, foreclosure action or delivery of a deed or otherwise, IBM will
attorn to and recognize such successor-landlord as IBM's landlord and the
successor-landlord will accept such attornment and recognize IBM's rights of
possession and use of the Premises in accordance with the provisions of the
Lease and, without further evidence of such attornment and acceptance, the
parties shall be bound by and comply with all of the terms, provisions,
covenants, and obligations contained in the Lease on their respective parts to
be performed.

     3.   Mortgagee shall not be liable for any default by Landlord under the
Lease occurring prior to the date on which Mortgagee shall have succeeded to the
rights of Landlord under the Lease;  Mortgagee shall not be liable for any
default by Landlord under the lease occurring prior to the date on which
Mortgagee shall have succeeded to the rights provided, however, that nothing
contained in this Section 3 shall be deemed to release Mortgagee from any
liability arising out of defaults occurring prior or subsequent to the date on
which Mortgagee shall have succeeded to the rights of Landlord under the Lease
if IBM shall have given Mortgagee a notice of such defaults as and when they
occur and shall be given Mortgagee the time required by Paragraph 4 below to
remedy them.

     4.   IBM will not terminate or cancel the Lease or the term thereof by
reason of a default thereunder by Landlord unless and until IBM has given
Mortgagee written notice of the default at the same time Landlord is notified
thereof, at Mortgagee's address stated on page one hereof or such other address
designated in writing to IBM, and has afforded Mortgagee such time granted to
Landlord under the Lease to remedy the particular default, plus ten (10) days.

     5.   (a)  IBM will not pay an installment of rent or any part thereof more
than one month in advance.

          (b)  After notice from Mortgagee to IBM, IBM will pay to Mortgagee, or
to such person or firm designated by Mortgagee, all rentals and other moneys due
and owing to 

                                            -2-
<PAGE>

Landlord under the Lease.

          (c)  After the date hereof, no amendment entered into between IBM and
Landlord, which materially and adversely affects the security lien of Mortgagee,
shall be valid against Mortgagee unless Mortgagee has approved such amendment
writing.

     6.   This Agreement shall continue in effect until payment in full of all
sums secured by the Mortgage are paid, and the Mortgage is satisfied.

     7.   This Agreement shall inure to the benefit of and be binding upon the
parties hereto and their respective legal representatives, successors and
assigns and may not be modified orally or by any course of conduct other than by
a written instrument signed by both parties hereto.

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their duly authorized representatives as of the day and year first
above written.


WITNESS:                                     INTERNATIONAL BUSINESS
                                             MACHINES CORPORATION


_________________________                    By:_____________________________


WITNESS:                                     (Mortgagee)


_________________________                    By:_____________________________

                                     -3-
<PAGE>

                                      EXHIBIT L

                                INTENTIONALLY OMITTED

<PAGE>


                                      EXHIBIT M

                            LIST OF TENANT OWNED PROPERTY

     1.   All furniture located in the Leased Premises.

     2.   All computer equipment located with Leased Premises.

     3.   All equipment and fixtures located in the Leased Premises not
mechanically fastened to the structure or building service systems (including
shelving racks in the warehouse area).

<PAGE>


                       AMENDMENT TO AMENDED AND RESTATED LEASE


          THIS AMENDMENT TO AGREEMENT OF LEASE MENDED AND RESTATED LEASE 
dated as of the 1st day of June, 1996, by and between SOUTH BRUNSWICK 
INVESTORS, L.P., a Delaware limited partnership having a mailing address at 
c/o THE SHIDLER GROUP, Suite 1105, One Logan Square, Philadelphia, 
Pennsylvania 19103, hereinafter called "Landlord," and INTERNATIONAL BUSINESS 
MACHINES CORPORATION, a New York corporation, having its principal office at 
Old Orchard Road, Armonk, New York 10504, hereinafter called "Tenant."

                                      Background

          A.   Pursuant to an Amended and Restated Lease dated August 11, 
1995 (the "Lease"), Tenant leased from Landlord premises located in South 
Brunswick Township, Middlesex County, New Jersey.  Capitalized terms used 
herein and not otherwise defined shall have the meanings given to them in the 
Lease.

          B.   Landlord and Tenant now wish to modify certain terms of the 
Lease, as set forth herein. 

          NOW, THEREFORE, in consideration of the mutual covenants contained 
in this Amendment and intending to be legally bound hereby, Landlord and 
Tenant agree as follows:

          1.   Section 2.03 of the Lease is hereby deleted in its entirety 
and the following is substituted in lieu thereof:

          Section 2.03.  EXTENDED TERM.  Tenant shall have the option to extend
     the term of this Lease for Building 1 (but not for Building 3) for One (1)
     consecutive Five (5) year term (the "Extended Term").  Such option shall be
     exercised by written notice to Landlord given at least nine (9) months
     prior to the expiration of the Initial Term.  The Extended Term shall be
     upon the same covenants, agreements, provisions and conditions that are
     contained herein for the Initial Term, except that Tenant shall not have
     any further option to extend the term of this Lease.  The Annual Rent
     specified in Section 3.02 shall be payable during the Extended Term. 

          2.   In Section 2.04 of the Lease, the phrase "as to entire leased 
premises or only as to the entirety of Building 1 or the entirety of Building 
3, as Tenant shall elect in Tenant's notice of termination" is hereby 
deleted, and the following is substituted in lieu thereof:  "of Building 1".

          3.   Except as expressly set forth herein, all terms and conditions 
of the Lease shall remain in full force and effect and are incorporated 
herein by reference.  The parties ratify and confirm the Lease as amended by 
this Amendment.  This Amendment shall 

<PAGE>

be binding upon and inure to the benefit of the parties hereto and their
successors and assigns.

          4.   This Amendment may be executed in counterpart with the same 
effect as if the signatures thereto and hereto were taken upon the same 
instrument, but all of such counterparts taken together shall be deemed to 
constitute one and the same instrument.  

          IN WITNESS WHEREOF, the parties hereto have caused this Amendment 
to be executed as of the day and year first above written.

                                   LANDLORD:

                                   SOUTH BRUNSWICK INVESTORS, L.P., a Delaware
                                   limited partnership

                                        By:  South Brunswick Investment Company,
                                        L.L.C.


                                        By:__________________________
                                        Name:________________________
                                        Title:_______________________


                                   TENANT:

                                   INTERNATIONAL BUSINESS 
                                   MACHINES CORPORATION


                                   By:_______________________________
                                   Name: ____________________________
                                   Title: ___________________________
                              

                                         -2-



<PAGE>

                                                                  Exhibit 10.10


                              AGREEMENT OF LEASE

                                    BETWEEN

                   SOUTH BRUNSWICK INVESTORS, L.P. (LANDLORD)

                                      AND

                  TELEPORT COMMUNICATIONS GROUP INC. (TENANT)



                            DATED February 20, 1996






<PAGE>



                               AGREEMENT OF LEASE
                                    BETWEEN
                    SOUTH BRUNSWICK INVESTORS, L.P. (LANDLORD)
                                      AND
                   TELEPORT COMMUNICATIONS GROUP INC. (TENANT)

                           DATED February 20, 1996


                              TABLE OF CONTENTS
                              -----------------

SECTION  TITLE                                                  PAGE NO.
- -------  -----                                                  --------
     1.   DEMISED PREMISES.........................................  1

     2.   LEASE TERM...............................................  1

     3.   FIXED RENT...............................................  1

     4.   ADDITIONAL RENT..........................................  2

     5.   USE OF DEMISED PREMISES..................................  3

     6.   COMPLETION OF DEMISED PREMISES...........................  4

     7.   ALTERATIONS OR IMPROVEMENTS BY TENANT....................  4

     8.   COVENANTS OF LANDLORD....................................  7

     9.   COVENANTS OF TENANT......................................  9

     10.  ASSIGNMENT AND SUBLETTING................................ 13

     11.  EMINENT DOMAIN........................................... 14

     12.  CASUALTY DAMAGE.......................................... 15


                                      (i)


<PAGE>

     13.  INSURANCE; INDEMNIFICATION OF LANDLORD; WAIVER OF
            SUBROGATION............................................ 17

     14.  INSPECTION; ACCESS; CHANGES IN BUILDING FACILITIES....... 18

     15.  DEFAULT.................................................. 19

     16.  LANDLORD'S REMEDIES...................................... 20

     17.  LANDLORD'S RIGHT TO CURE TENANT'S DEFAULT................ 22

     18.  TENANT'S REMEDIES........................................ 22

     19.  ESTOPPEL CERTIFICATE..................................... 22

     20.  HOLDING OVER............................................. 22

     21.  SURRENDER OF DEMISED PREMISES............................ 22

     22.  SUBORDINATION, ATTORNMENT AND NONDISTURBANCE............. 23

     23.  BROKERS.................................................. 24

     24.  NOTICES.................................................. 24 

     25.  [INTENTIONALLY OMITTED].................................. 25

     26.  TERMINATION OPTION....................................... 26

     27.  FIRST OPTION SPACE....................................... 26

     28.  SECOND OPTION SPACE...................................... 29

     29.  RENEWAL TERMS............................................ 31


                                     (ii)

<PAGE>


     30.  SIGNS.................................................... 32

     31.  PARKING.................................................. 32

     32.  ARBITRATION.............................................. 33

     33.  ADDITIONAL RIGHTS OF TENANT.............................. 34

     34.  BUILDING 2 SECURITY...................................... 36

     35.  RESTRICTIONS ON OTHER TENANTS IN THE BUILDINGS........... 37

     36.  MISCELLANEOUS............................................ 37


                               List of Exhibits
                               ----------------

     Exhibit "A":   Plan of Demised Premises and Option Areas
     Exhibit "B":   Rent Schedule
     Exhibit "C":   Taxes, Operating Expense and Other Additional Rent
     Exhibit "D":   Schedule of Landlord's Work
     Exhibit "E":   Janitorial Specifications
     Exhibit "F":   Rules and Regulations
     Exhibit "G":   Tenant Estoppel Certificate and Statement
     Exhibit "H":   Property Environmental Status
     Exhibit "I":   HVAC Specifications
     Exhibit "J":   Holidays
     Exhibit "K":   Plan of Project and Parking Areas
     Exhibit "L":   Tenant Work
     Exhibit "M":   Form of Subordination, Non-disturbance and Attornment
                    Agreement




                                     (iii)


<PAGE>

                              AGREEMENT OF LEASE

     THIS AGREEMENT OF LEASE ("Lease") is made this 20th day of February, 1996,
by and between SOUTH BRUNSWICK INVESTORS, L.P., a Delaware limited 
partnership ("Landlord") and TELEPORT COMMUNICATIONS GROUP INC., a Delaware 
corporation ("Tenant"). 

     Intending to be legally bound, Landlord and Tenant agree as set forth 
below.

1.   DEMISED PREMISES.  Landlord, for the term and subject to the provisions 
and conditions hereof, leases to Tenant, and Tenant rents from Landlord, the 
space (the "Demised Premises") containing 87,550 rentable square feet shown 
on Exhibit "A" attached hereto and made a part hereof, in the buildings (the 
"Buildings") erected on Lot #1 (the "Land") as shown on Exhibit "K", which 
Land is depicted on that certain subdivision plan entitled "Plan of Minor 
Subdivision" prepared by Ezra Golub Associates and recorded in the Clerk's 
Office of Middlesex County in Book 4300, page 868 (the "Plan"), and which 
comprises a portion of the South Brunswick Corporate Center, 431 Ridge Road, 
Dayton, New Jersey (the "Project"), together with rights of ingress and 
egress thereto, and with the right in common with others to use, to the 
extent applicable, the elevators and common lobbies, loading docks, 
passageways, stairways and vestibules, and to pass over and park on those 
areas designated by Landlord for tenant parking.  The Buildings contain 
142,385 rentable square feet and are depicted as Building 2 ("Building 2") 
and Building 4 (the "UPS Building") on the Plan.

2.   LEASE TERM.  The Lease Term (the "Lease Term") shall commence on July 1, 
1996 (the "Commencement Date") and shall continue until December 31, 2006, 
unless extended or sooner terminated as provided herein.

     The first lease year of the Lease Term shall commence on the 
Commencement Date and shall end (i) on the day immediately preceding the 
first anniversary of the Commencement Date, if the Commencement Date is the 
first day of the month, or (ii) on the last day of the month in which the 
first anniversary of the Commencement Date occurs, if the Commencement Date 
is any day other than the first day of a calendar month.  Each subsequent 
lease year shall be a period of twelve months, commencing on the day 
immediately following the expiration of the prior lease year and expiring on 
the day immediately preceding the anniversary of the commencement of such 
lease year.  

3.   FIXED RENT.  Fixed rent (the "Fixed Rent") is payable by Tenant 
beginning on the Commencement Date in monthly installments equal to 
one-twelfth (1/12th) of the total annual Fixed Rent (the "Annual Fixed Rent") 
payable for the applicable Lease Year as set forth in Exhibit "B" attached 
hereto, without prior notice or demand, and without any setoff or deduction 
whatsoever, in advance, on the first day of each month at such place as 
Landlord may direct, except that the Fixed Rent for the first full month of 
the Lease Term will be paid on the date of execution of this Lease.  The 
Annual Fixed Rent set forth herein is an


<PAGE>


annualized amount.  In addition, if the Lease Term commences on a day other 
than the first day of a calendar month, Tenant shall pay to Landlord, on or 
before the Commencement Date of the Lease Term, a pro rata portion of the 
monthly installment of rent (including Fixed Rent and any Additional Rent, as 
hereinafter defined), such pro rata portion to be based on the actual number 
of calendar days remaining in such partial month after the Commencement Date 
of the Lease Term.  If the Lease Term shall expire on other than the last day 
of a calendar month, such monthly installment of Fixed Rent and Additional 
Rent shall be prorated for each calendar day of such partial month.  Upon the 
second occurrence and those thereafter within any six-month period during the 
Lease Term, if any portion of Fixed Rent, Additional Rent or any other sum 
payable to Landlord hereunder shall be due and unpaid for more than ten (10) 
days, Tenant shall pay to Landlord, without notice or demand, a late charge 
equal to 5% of such overdue amount to partially compensate Landlord for its 
administrative costs.  Tenant acknowledges that such late fee is a reasonable 
approximation of such costs and does not constitute a penalty.  In addition, 
all amounts overdue and unpaid in excess of ten (10) days after notice by 
Landlord that such amounts are overdue  and unpaid shall bear interest at a 
rate equal to two percent (2%) per annum greater than the prime rate of 
interest as published in the Wall Street Journal, eastern edition, from time 
to time (the "Default Rate"), as the same may change from time to time, from 
the due date until the date of payment thereof by Tenant, provided, however, 
that nothing contained herein or elsewhere in this Lease shall be construed 
or implemented in such a manner as to allow Landlord to charge or receive 
interest in excess of the maximum legal rate then allowed by law.  Landlord 
and Tenant understand and agree that memos written on rental checks or any 
other payment forms delivered to Landlord do not and shall not, throughout 
the Lease Term hereunder, constitute satisfaction of any current or 
outstanding debt of Tenant pursuant to this Lease, and, provided further that 
any such memo shall not preclude Landlord from recovering any balance of any 
sum or sums due under this Lease.  In addition, a letter or similar type 
statement accompanying any rental check or payment form delivered to Landlord 
pursuant to this Lease also shall have no force or effect under this Lease as 
such may relate to the satisfaction of any debt of Tenant hereunder.

4.   ADDITIONAL RENT.  Tenant shall pay, without any setoff or deduction 
whatsoever, the Tax Adjustment and the Operating Expense Adjustment, as such 
terms are defined in Exhibit "C" hereto, in the amounts and in the manner set 
forth in Exhibit "C."  The Tax Adjustment, the Operating Expense Adjustment 
and all other sums due hereunder (other than Fixed Rent) are sometimes 
hereinafter referred to together as the Additional Rent.


                                       2

<PAGE>


5.   USE OF DEMISED PREMISES.

     5.1. Subject to all other restrictions set forth in this Lease, the 
Tenant may use the Demised Premises only for the installation, operation and 
maintenance (including repair and replacement) of equipment and facilities in 
connection with Tenant's telecommunications business, executive and general 
office uses and any other legally permitted uses related thereto, and for no 
other purpose.  For purposes of this Lease, the term "general office use" 
shall not include use as a school, college, university or educational 
institution of any type other than the training of Tenant's customers, agents 
and employees, use as a governmental agency, use for any purpose which is not 
consistent with the operation of the Buildings as first-class office 
buildings, use as an employment, recruitment or temporary help service or 
agency, or any use involving regular traffic by the general public.

     5.2. Tenant shall not use or permit any use of the Demised Premises 
which creates any safety or environmental hazard, or which would:  (i) be 
dangerous to the Demised Premises, the Buildings, or other tenants in the 
Buildings, (ii) be disturbing to other tenants of the Buildings, or (iii) 
cause any increase in the premium cost for any insurance which Landlord may 
then have in effect with respect to the Buildings generally, unless Tenant 
refuses to pay such additional costs.

     5.3. This Lease includes the right of Tenant to use the Common Building 
Facilities in common with other tenants of the Buildings.  The words "Common 
Building Facilities" shall mean all of the facilities in or around the 
Buildings designed and intended for use by the tenants of the Buildings in 
common with Landlord and each other, including corridors; elevators; fire 
stairs; telephone and electric closets; telephone trunk lines and electric 
risers; aisles; walkways; truck docks; plazas; the roof and Building Parking 
Area to the extent not reserved for exclusive use by Landlord or others; 
courts; restrooms; service areas; lobbies; landscaped areas, and all other 
common and service areas of the Buildings intended for such use on the date 
hereof; excluding, however, (1) that part of the roof of the Buildings 
licensed for the exclusive use of Tenant in accordance with Section 33.7 
and/or 33.8 and (2) the restrooms, lobbies, corridors and telephone and 
electric closets on floors leased entirely by Tenant which shall be for the 
exclusive use of Tenant and shall not be used in common with other tenants or 
occupants of the Buildings.

     5.4. (a)  During the Term, Tenant shall comply with all statutes, rules, 
ordinances, orders, codes and regulations, other governmental requirements 
and legal requirements and standards issued thereunder (collectively referred 
to in this Lease as the "Laws") which are applicable to Tenant's use and 
occupancy of the Demised Premises.  Nothing herein shall be deemed to impose 
any obligation upon Tenant for any elements of the Structure or Building 
Service Systems for which Tenant is not otherwise responsible pursuant to the 
provisions of this Lease or for any restorations, alterations, replacements 
or repairs to the Buildings required to be made by Landlord pursuant to the 
provisions of this Lease.                                           


                                      3 


<PAGE>

          (b)  (i)  Except as otherwise set forth herein, Landlord shall 
comply with all Laws which (1) affect the Buildings and Land or (2) relate to 
the performance by Landlord of any duties or obligations to be performed by 
Landlord under this Lease.  Landlord represents that, except as otherwise set 
forth in Exhibit "H" and with regard to matters covered by the Americans with 
Disabilities Act, the Buildings and Land are in compliance with all 
applicable Laws as of the date of this Lease.  Except as otherwise set forth 
in Exhibit "H",  Landlord shall be responsible for ensuring that the 
Buildings and Land shall at all times from the date hereof to the date of 
expiration of this Lease comply with all design, construction, energy 
conservation, environmental, fire, health, and safety Laws, provided, 
however, that Tenant shall be responsible for ensuring, at its sole cost, 
that the Tenant Work (as defined in Exhibit "L") and any other alterations, 
additions or improvements to the Buildings or on the Land constructed by 
Tenant (collectively with the Tenant Work, "Tenant Improvements") comply, at 
all times from the date hereof to the date of expiration of this Lease, with 
all design, construction, energy conservation, environmental, fire, health, 
and safety Laws and the requirements of Landlord's insurance underwriters.

               (ii) All boilers and other pressure vessel equipment shall be 
constructed and maintained by Landlord in accordance with ASME Standards and 
Codes.

              (iii) Landlord shall regularly inspect and maintain the HVAC 
system and treat the cooling tower with U.S. Environmental Protection Agency 
registered chemicals to prevent the buildup of slime, algae, and bacteria, 
and shall follow the current practices of the American Society of Heating, 
Refrigeration and Air Conditioning Engineers.

6.   COMPLETION OF DEMISED PREMISES.  Tenant agrees to accept possession of 
the Demised Premises in an "AS IS" condition, subject to the right of any 
existing tenant to remove its personal property or improvements, except for 
the work to be performed by Landlord pursuant to Exhibit "D."  Landlord will 
promptly correct any latent defects in the Buildings, other than those 
relating to Tenant Improvements, provided that such defects are reported to 
Landlord within six months after the Commencement Date.

7.   ALTERATIONS OR IMPROVEMENTS BY TENANT.  

     7.1. (a)  Except as otherwise provided in Exhibit "L", Tenant shall not 
during the Lease Term make any alterations, additions or improvements to the 
Demised Premises (including, without limitation, the Demised Premises Service 
Systems) in excess of $25,000 without the prior written approval of Landlord, 
and then only in accordance with plans and specifications previously approved 
in writing by Landlord, which approval shall not be unreasonably withheld or 
delayed, provided, however, that such approval may be subject to reasonable 
conditions including, without limitation, that Tenant be required to pay for 
any out-of-pocket cost to Landlord occasioned thereby.  Notwithstanding the 
foregoing, Landlord 


                                      4


<PAGE>

agrees that Tenant shall be permitted, if necessary, to reinforce a portion 
of the floor(s) within the Demised Premises to support battery stacks and 
other equipment.  

          (b)  The words "Demised Premises Service Systems" shall mean the 
electrical, HVAC, mechanical, plumbing, safety and health and 
telecommunication (voice/data/signal) systems that directly service only the 
Demised Premises from a localized point of distribution.  Such systems are 
dedicated to the Demised Premises at their available capacities and do not 
service any space other than the Demised Premises.

          (c)  In the event of a dispute arising concerning the provisions of 
this Section 7.1, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 32 hereof.

     7.2. (a)  Except as otherwise provided in Exhibit "L", Tenant shall not 
alter, improve, replace or change the Building Service Systems or the 
Structure except in accordance with this Section 7.2.  Tenant may make 
alterations, improvements, replacements and other changes to the Building 
Service Systems and to the Structure, provided that Landlord consents 
thereto, which consent may be withheld at Landlord's reasonable discretion.

          (b)  If Tenant desires to make alterations, improvements, 
replacements or other changes to the Structure or Building Service Systems, 
Tenant shall make a request for Landlord's approval by submitting to Landlord 
a list of proposed contractors and detailed plans and specifications for the 
work to be performed. Landlord shall respond within ten (10) business days 
from receipt of the same, approving those contractors and those portions of 
the work that are acceptable and disapproving those contractors and portions 
of the work that are, in Landlord's reasonable judgment, unacceptable, and 
specifying in detail the nature of Landlord's objection.

          (c)  The words "Building Service Systems" shall mean the 
electrical, HVAC, mechanical, plumbing, safety and health and 
telecommunication (voice/data/signal) systems that service the Buildings up 
to the point of localized distribution.  Such systems provide the main source 
of supply and distribution throughout the Buildings.

          (d)  The word "Structure" shall mean bearing walls, roof, exterior 
walls, support beams, foundation, window frames, floor slabs and support 
columns of the Buildings.

          (e)  In the event of a dispute arising concerning the provisions of 
this Section 7.2, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 32 hereof.

     7.3. Regardless of whether or not Tenant is required under this Lease to 
obtain Landlord's consent to the construction of a particular Tenant 
Improvement, Tenant shall, in all 


                                      5


<PAGE>

cases, prior to construction of the Tenant Improvement, provide Landlord, 
with (i) notice of its intent to construct such Tenant Improvement, and (ii) 
copies of all permits required to construct the Tenant Improvement.  All 
Tenant Improvements shall be constructed in accordance with the requirements 
of all applicable laws, ordinances, regulations, codes and other requirements 
of governmental authorities and with the regulations of Landlord's insurance 
underwriter.  In addition, all Tenant Improvements shall be constructed in a 
thorough, first-class and workmanlike manner and shall be in good and usable 
condition at the date of completion.  At any time and from time to time 
during the construction of the Tenant Improvements, Landlord, Landlord's 
architect and Landlord's general contractor may enter upon the Demised 
Premises and inspect the Tenant Improvements for the protection of the 
Buildings and/or any premises adjacent to the Demised Premises.  Such 
inspection shall, however, be for Landlord's benefit only and may not be 
relied upon by Tenant or any other party. When constructing any Tenant 
Improvements, Tenant shall comply with the requirements of Sections 7, 8, 9, 
10, 11 and 12 of Exhibit "L" attached hereto.

          (a)  In the event of a dispute arising concerning the provisions of 
this Section 7.3, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 32 hereof.  

     7.4. Tenant Improvements shall be deemed part of the Buildings and shall 
not be removed by Tenant.  Notwithstanding the foregoing, by notice to Tenant 
given at the time of approval, Landlord may require that Tenant either: (i) 
remove any such alterations, additions or improvements, repair any damage to 
the Buildings or the Demised Premises occasioned by their installation or 
removal, and restore the Demised Premises to substantially the same condition 
as existed prior to the time when any such alterations, additions or 
improvements were made, or (ii) reimburse Landlord for the cost of such 
removal, repair and restoration.  With regard to any alterations, additions 
or improvements which Tenant is entitled to construct without Landlord 
consent, Tenant may, prior to constructing such alterations, additions or 
improvements, request that Landlord inform Tenant whether it will require 
that such alterations, additions or improvements be removed and Landlord 
shall, with reasonable promptness, so inform Tenant.

          (a)  In the event of a dispute arising concerning the provisions of 
this Section 7.4, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 32 hereof.

     7.5. As used in this Lease, the term "Tenant Improvements" shall not 
include Tenant's moveable personal property, trade fixtures and equipment 
(collectively, "Tenant's Owned Property").  Tenant's Owned Property shall be 
owned by and remain the property of Tenant and, subject to the provisions of 
Section 15, Tenant may remove all or any of Tenant's Owned Property at any 
time during the Term.  If Tenant removes such things or any of them, Tenant 
shall not be required to remove pipes, wires and the like from the walls, 
ceilings or 


                                      6

<PAGE>


floors, provided Tenant properly cuts, disconnects and caps such pipes and 
wires and seals them off as required by Laws and Landlord's insurance 
underwriters.

          (a)  In the event of a dispute arising concerning the provisions of 
this Section 7.5, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 32 hereof.

8.   COVENANTS OF LANDLORD.

     8.1. Tenant shall be granted access to the Demised Premises, including 
facilities for loading, unloading, delivery and pickup in the ordinary course 
of business, twenty-four (24) hours per day, seven (7) days a week.  Landlord 
shall provide passenger elevator service twenty-four (24) hours a day, seven 
(7) days a week, and freight elevator service as reasonably required by 
Tenant, subject to reasonable outages for repairs or maintenance.

     8.2. Landlord will supply, for normal office use, heat or air 
conditioning Monday through Friday from 7:00 a.m. to 6:00 p.m., and Saturday 
from 8:00 a.m. to 1:00 p.m. local time excluding Holidays (as defined in 
Exhibit "J"), elevator service (where applicable), janitorial and cleaning 
services as set forth in Exhibit "E" hereto, electricity, and hot and cold 
potable water, all in amounts consistent with services provided in similar 
first-class buildings in the community, provided that:  (i) Landlord shall 
not be liable for failure to supply or interruption of any such service by 
reason of any cause beyond Landlord's reasonable control and Landlord shall 
not be liable for consequential damages in any event; (ii) Landlord shall 
install meters to measure the electricity consumed on the Demised Premises 
and Tenant shall pay directly for the cost of Tenant's electrical consumption 
in the Demised Premises (which shall, for purposes of this Section, exclude 
base building heating and cooling, and common area electricity, the cost of 
which is included in Operating Expenses); (iii) if Tenant requires janitorial 
and cleaning services beyond those provided by Landlord, Tenant shall arrange 
for such additional services through Landlord, and Tenant shall pay Landlord 
for such additional services upon receipt of billing therefor; and (iv) if 
Tenant requires installation of a separate or supplementary heating, cooling, 
ventilating and/or air conditioning system Tenant shall pay all costs in 
connection with the furnishing, installation and operation thereof.

     8.3. In the event that Tenant requires heat or air conditioning beyond 
the hours set forth in Section 8.2 above, Tenant shall so notify Landlord (i) 
before noon on the business day when such service is required for the evening 
or (ii) by noon of the preceding business day when such service is required 
on a Saturday, Sunday or Holiday, and Tenant shall pay Landlord for 
Landlord's actual costs incurred thereby, within thirty (30) days of being 
billed therefor.  Any such bill shall include a tabulation of the days and 
hours upon which such services were provided.


                                      7 

<PAGE>

     8.4. Landlord shall make all necessary repairs to the exterior windows, 
walls and other structural parts of the Demised Premises and the Buildings, 
the base building plumbing, heating, ventilating, air conditioning and 
electrical systems, the roofs of the Buildings, the common areas of the 
Buildings, and the parking areas, sidewalks and other common areas of the 
Land, and shall keep all such common areas reasonably free of debris, ice and 
snow.  Notwithstanding the foregoing, Landlord shall not be obligated to make 
any such repair until the expiration of a reasonable period of time after 
Landlord becomes aware that such repair is needed.  Furthermore, in no event 
shall Landlord be obligated to repair any damage caused by any act, omission 
or negligence of Tenant or any of its employees, agents, invitees, licensees, 
subtenants or contractors, or any defect or damage attributable to failure by 
Tenant or any of its employees, agents, invitees, licensees, subtenants or 
contractors to construct any Tenant Improvements in compliance with the terms 
of this Lease.  Tenant shall reimburse Landlord for all costs and expenses of 
repairing and replacing all damage or injury to the Buildings caused by 
Tenant or any of its employees, agents, invitees, licensees, subtenants or 
contractors, or by all or any of them moving in or out of the Buildings, or 
by installation or removal of furniture, fixtures or other property by all or 
any of them, or by the failure of all or any of them to construct any Tenant 
Improvements in compliance with the terms of this Lease. Such costs and 
expenses shall be payable as Additional Rent hereunder and shall be paid by 
Tenant within thirty (30) days after Tenant is billed therefor.

     8.5. Tenant, upon paying the Annual Fixed Rent and all Additional Rent 
when due, and upon observing, keeping and performing when required all of the 
covenants, agreements and conditions of this Lease on Tenant's part to be 
observed, kept and performed, shall quietly have and enjoy the Demised 
Premises throughout the Lease Term without hindrance or molestation by 
Landlord or by anyone claiming in, through or under Landlord, subject, 
however, to the terms of this Lease.

     8.6. (a)  If, after notice by Tenant, Landlord fails or refuses to make 
any repairs, restoration, or replacements which it is required to make under 
Section 8 or elsewhere in this Lease (other than repairs following a 
casualty, which are covered in Section 12) within thirty (30) days, or if 
such repairs, restorations or replacements cannot reasonably be made within 
thirty (30) days, if Landlord shall not commence such repairs within thirty 
(30) days and thereafter diligently pursue the same to completion, Tenant may 
declare an event of default and cure such default.  Landlord shall reimburse 
Tenant for the cost of such cure within thirty (30) days after Landlord 
receives Tenant's invoice.

          (b)  In the event of a dispute arising concerning the provisions of 
this Section 8.6, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 32 hereof.

     8.7. If, by reason of an emergency, repairs, restoration, or 
replacements become necessary and by the provisions hereof are the 
responsibility of Landlord, Tenant may make 


                                      8 

<PAGE>

such repairs, restoration or replacements which, in the opinion of Tenant, 
are necessary for the preservation of the Demised Premises, or of the safety 
or health of the occupants in the Project, or of Tenant's Owned Property, or 
are required by the Laws; provided, however, that Tenant shall first make a 
reasonable effort to inform Landlord before making them.

9.   COVENANTS OF TENANT.

     9.1. Tenant will, at Tenant's sole cost and expense, keep the Demised 
Premises and the fixtures and appurtenances therein in good order and repair 
at all times, reasonable wear and tear excepted.  Such obligation shall 
include, without limitation, all plumbing, heating, ventilating, air 
conditioning and electrical systems exclusively serving the Demised Premises 
from the point that such systems connect to the base building systems on each 
floor. Notwithstanding the foregoing, Landlord may, upon thirty (30) days' 
written notice (except in case of emergency), but shall not be required to, 
perform all or any portion of Tenant's repair obligations as set forth above 
on Tenant's behalf.  In such event, following the performance of such repairs 
by Landlord, Landlord shall charge Tenant the amount of the expense therefor. 
 If Tenant fails to pay such amount within thirty (30) days following 
delivery of Landlord's invoice therefor, such amount shall thereafter bear 
interest at the Default Rate until the date of payment by Tenant.  In the 
event Landlord does not elect to perform all or any portion of Tenant's 
repair obligations as set forth above and Tenant fails to make such repairs 
within thirty (30) days of the date such work becomes necessary, Landlord 
may, but shall not be required to, perform such work and charge the amount of 
the expense therefor, with interest accruing and payable thereon, all in 
accordance with Section 19 below;

     9.2. Tenant will comply with any covenants, easements and restrictions 
governing the Land or Buildings (including, but not limited to (i) that 
certain Declaration of Cross-Easements, Covenants and Restrictions of South 
Brunswick Corporate Center made by Landlord, dated October 9, 1995 and to be 
recorded in the Clerk's Office of Middlesex County and (ii) that certain 
Declaration of Certain Easements and Covenants of South Brunswick Corporate 
Center made by Landlord, dated October 9, 1995 and to be recorded in the 
Clerk's Office of Middlesex County) and shall indemnify, defend and hold 
Landlord harmless from all consequences from Tenant's failure to do so;

     9.3. Tenant will promptly notify Landlord of any damage to or defects in 
the Demised Premises of which it becomes aware, any notices of violation 
received by Tenant and any injuries to person or property which occur therein 
or claims relating thereto;

     9.4. Tenant will not place within the Demised Premises or bring into the 
Buildings any machinery or other personalty having a weight in excess of the 
design capacity of the Buildings, such capacity on above-grade floors being 
60 pounds per square foot, without the prior written consent of Landlord and 
without full compliance with all applicable building security measures;       


                                      9 

<PAGE>

     9.5. Tenant will comply with the rules and regulations set forth in 
Exhibit "F" hereto and with all reasonable changes and additions thereto upon 
notice by Landlord to Tenant (such rules and regulations, together with all 
changes and additions thereto, being part of this Lease);

     9.6. Tenant will comply with all reasonable recommendations of 
Landlord's or Tenant's insurance carriers relating to layout, use, storage of 
materials and maintenance of the Demised Premises; and

     9.7. Tenant further agrees to the following:

          (a)  As used in this Lease, the following terms shall have the
following meanings:

               (i)  "Environmental Laws" shall mean all federal, state or 
local laws, regulations, rules, ordinances or administrative or judicial 
rulings relating to (A) releases or threatened releases of Hazardous 
Materials or materials containing Hazardous Materials, including, without 
limitation, the Comprehensive Environmental Response, Compensation and 
Liability Act or the New Jersey Spill Compensation and Control Act; (B) the 
manufacture, handling, transport, use, treatment, storage or disposal of 
Hazardous Materials or materials containing Hazardous Materials (C) the 
transfer of industrial facilities, including, without limitation, ISRA; (D) 
storage tanks; or (E) otherwise relating to the environment or to the 
protection of human health.

               (ii) "Hazardous Materials" shall mean all chemical, 
biological, organic, inorganic, infectious, toxic or hazardous pollutants, 
contaminants, chemicals, substances, materials or wastes of whatever kind or 
nature, whether liquid, solid or gaseous, including, without limitation, 
pollutants, contaminants, chemicals, substances, materials and wastes 
regulated under, defined, listed or included in any Environmental Laws.  
Hazardous Materials shall include, without limitation, asbestos, 
polychlorinated biphenyls, and petroleum products.

              (iii) "Hazardous Materials Inventory" shall mean a 
comprehensive inventory of all Hazardous Materials used, generated, stored, 
treated or disposed of by Tenant at the Demised Premises.

               (iv) "ISRA" shall mean the New Jersey Industrial Site Recovery 
Act, N.J.S.A. 13:1K-6 et seq. and the regulations promulgated thereunder, as 
amended from time to time.                                           


                                      10 

<PAGE>

               (v)  "Losses" shall mean all liabilities, obligations, losses, 
damages, penalties, actions, judgment, lawsuits, costs, expenses, 
disbursements, orders or decrees, including, without limitation, attorneys' 
and consultants' fees and expenses.

               (vi) "NJDEP" shall mean the New Jersey Department of 
Environmental Protection.

          (b)  Tenant shall not use the Demised Premises, the Buildings or 
the Land for the generation, use, manufacture, recycling, transportation, 
treatment, storage, handling, discharge or disposal of any Hazardous 
Materials; provided, however, that the foregoing shall not be deemed or 
construed to prohibit Tenant's possession or use of products containing 
Hazardous Materials so long as such products are commonly found in an office 
environment or non-manufacturing telecommunications business and are handled, 
stored, used and disposed of in compliance with all Environmental Laws.  
Furthermore, Tenant will not engage in any activity at the Demised Premises, 
the Buildings or the Land which poses a risk of damage to the environment or 
which would subject Tenant, Landlord, the Demised Premises, the Buildings or 
the Land to responsibility or liability under any Environmental Law.

          (c)  Tenant shall (i) comply with all Environmental Laws in 
connection with Tenant's use or occupancy of the Demised Premises, Buildings 
and Land; (ii) obtain, maintain in full force and effect, and comply with, 
all permits required under Environmental Laws; (iii) comply with all record 
keeping and reporting requirements imposed by Environmental Laws concerning 
the use, handling, treatment, storage, disposal or release of Hazardous 
Materials on the Demised Premises, Buildings and Land; (iv) report to 
Landlord any release or discharge of Hazardous Materials within two business 
days of such discharge or release; (v) provide to Landlord copies of all 
written reports concerning such discharge of Hazardous Materials that are 
required to be filed with Governmental Entities under Environmental Laws; 
(vi) maintain and annually update a Hazardous Materials Inventory with 
respect to Hazardous Materials used, generated, treated, stored or disposed 
of at the Demised Premises, Buildings and Land; and (vii) make available to 
Landlord for inspection and copying (at Landlord's expense), upon reasonable 
notice and at reasonable times, such Hazardous Materials Inventory and any 
other reports, inventories or other records required to be kept under 
Environmental Laws concerning the use, generation, treatment, storage, 
disposal or release of Hazardous Materials.

          (d)  In the event that Tenant's operations at the Demised Premises, 
Buildings or Land cause any part of the Demised Premises, Buildings or Land, 
to be deemed an industrial establishment (as such term is defined by ISRA) 
and such Tenant takes any action that triggers the applicability of ISRA, 
Tenant shall: (i) take all steps necessary to achieve compliance with ISRA 
with respect to such transaction or event; (ii) pay all costs and fees 
associated with achieving compliance with ISRA in connection with such 
matter; and (iii) provide Landlord with copies of:  (a) all correspondence 
with the NJDEP; (b) all field and


                                      11

<PAGE>

laboratory data generated by or on behalf of Tenant; and (c) all reports, 
summaries proposals and recommendations submitted to the NJDEP in connection 
with such matter.

          (e)  Tenant does hereby agree to indemnify, defend and save 
harmless Landlord from any and all Losses resulting from any claim, demand, 
liability, obligation, right or cause of action, including but not limited to 
governmental action or other third party action, (collectively, "Claims"), 
that is asserted against or incurred by Landlord, the Demised Premises, the 
Buildings or the Land as a result of Tenant's breach of any representation, 
warranty, or covenant hereof; or arising out of the operations or activities 
or presence of Tenant or any assignee, sublessee, agent, or representative of 
Tenant at the Demised Premises, the Buildings or the Land; or arising from 
environmental conditions or violations at the Demised Premises including 
without limitation the presence of Hazardous Materials at, on, or under the 
Demised Premises or the discharge or release of Hazardous Materials from the 
Demised Premises, provided, however, that Tenant shall not be obligated to 
indemnify Landlord under this paragraph if (i) the Claim arises due to events 
or conditions which occurred prior to the date of this Lease or (ii) Tenant 
is not responsible for such Claim under Environmental Laws, except as 
consequence of any negligence or willful misconduct of Landlord.

          (f)  Landlord does hereby agree to indemnify and save harmless 
Tenant from all Losses resulting from any Claims that are asserted against 
Tenant or the Demised Premises as a result of the presence of Hazardous 
Materials at the Demised Premises (i) deposited at the Demised Premises prior 
to the date of this Lease or (ii) for which Tenant is not responsible under 
Environmental Laws.  To the best of Landlord's knowledge, the Buildings and 
Demised Premises are in compliance with Environmental Laws as of the date 
hereof.

          (g)  The indemnities contained herein and the environmental 
representations, warranties and covenants of Landlord and Tenant shall 
survive termination of this Lease.

          (h)  Exhibit "H" contains a summary of certain environmental 
conditions on the Property concerning which International Business Machines 
Corporation ("IBM") has certain remediation obligations pursuant to an 
agreement with Landlord and various agreements with NJDEP.                    


                                      12 

<PAGE>

10.  ASSIGNMENT AND SUBLETTING.

     10.1.     Tenant shall not assign, pledge, mortgage or otherwise 
transfer or encumber this Lease, nor sublet all or any part of the Demised 
Premises or permit the same to be occupied or used by anyone other than 
Tenant or its employees, without Landlord's prior written consent, which 
consent shall not be unreasonably withheld or delayed.  It will not be 
unreasonable for Landlord to withhold its consent if the financial 
responsibility or business of a proposed assignee or subtenant is 
unsatisfactory to Landlord, or if Landlord deems such business not to be 
consonant with that of other tenants in the Buildings.

     10.2.     Tenant's request for consent to any sublet or assignment shall 
be in writing and shall contain the name, address, and description of the 
business of the proposed assignee or subtenant, its most recent financial 
statement and other evidence of financial responsibility, its intended use of 
the Demised Premises, and the terms and conditions of the proposed assignment 
or subletting. Within twenty (20) days from receipt of such request, Landlord 
shall either: (1) grant or refuse consent; or (2) if the request is for 
consent to a proposed assignment of this Lease, to terminate this Lease and 
the Lease Term effective as of the last day of the third month following the 
month in which the request was received.

     10.3.     Each assignee hereunder shall assume and be deemed to have 
assumed this Lease and shall be and remain liable jointly and severally with 
Tenant for all payments and for the due performance of all terms, covenants, 
conditions and provisions herein contained on Tenant's part to be observed 
and performed.  No assignment shall be binding upon Landlord unless the 
assignee shall deliver to Landlord an instrument in form and substance 
satisfactory to Landlord containing a covenant of assumption by the assignee, 
but the failure or refusal of assignee to execute and deliver the same shall 
not release assignee from its liability as set forth herein.  Any sublease or 
assignment document shall comply with the requirements of Section 5 of this 
Lease.  Fifty percent (50%) of any profit or additional consideration or rent 
in excess of the Fixed Rent or Additional Rent payable by Tenant hereunder 
which is payable to Tenant as a result of any assignment or subletting 
(excluding any assignment or subletting to Related Parties (as defined 
hereafter)) after subtraction of Tenant's subleasing expenses, shall be paid 
to Landlord as Additional Rent when received by Tenant; provided that, in no 
event shall any rental paid for use of Tenant's Owned Property be payable to 
Landlord.  Any such purported lease, sublease, license, concession or other 
agreement shall be absolutely void and ineffective as a conveyance of any 
right or interest in the possession, use or occupancy of any part of the 
Demised Premises.  Notwithstanding the foregoing, Tenant shall have the right 
to place the telecommunication equipment of other tenants and/or other of its 
customers on the Demised Premises and such placement shall not be deemed an 
assignment or sublease, provided, however, that except for a right of use, 
neither such placement nor any agreement between Tenant and any other tenant 
or customer with regard to such placement shall grant to any such tenant or 
customer any rights whatsoever in or to the Demised Premises.                 


                                      13 

<PAGE>

     10.4.     Any consent by Landlord hereunder shall not constitute a 
waiver of strict future compliance by Tenant with the provisions of this 
Section or a release of Tenant from the full performance by Tenant of any of 
the terms, covenants, provisions, or conditions in this Lease contained.

     10.5.     Notwithstanding any of the foregoing, Tenant may assign or 
sublet this Agreement, or any portion thereof, without Landlord's consent, to 
any entity (i) which controls, is controlled by or is under common control 
with Tenant, (ii) resulting from the merger or consolidation with Tenant, or 
to any entity which acquires all of the assets of Tenant as a going concern 
or the assets of the business that is being conducted on the Demised 
Premises, (iii) in which Tenant, or any entity affiliated with Tenant has at 
least a ten percent (10%) ownership interest, or (iv) which has entered into 
a management contract with Tenant or any entity in which Tenant, or any 
entity having at least a ten percent (10%) ownership interest in Tenant, has 
at least a ten percent (10%) ownership interest (collectively, "Related 
Parties").  Any such assignment or sublease shall not, in any way, affect or 
limit the liability of Tenant under the terms of this Agreement.

11.  EMINENT DOMAIN.  

     11.1.     If the whole or more than fifty percent (50%) of the Demised 
Premises, Buildings or Land (or use or occupancy of the Demised Premises) 
shall be taken or condemned by any governmental or quasi-governmental 
authority for any public or quasi-public use or purpose (including sale under 
threat of such a taking), or if the owner elects to convey title to the 
condemnor by a deed in lieu of condemnation, then this Lease shall cease and 
terminate on the earlier of (i) the date when title vests in such 
governmental or quasi-governmental authority or (ii) the date upon which such 
governmental or quasi-governmental authority takes possession.  The Fixed 
Rent and Additional Rent shall be abated from and after such date.

     11.2.     If fifty percent (50%) or less of the Demised Premises, 
Buildings or Land shall be taken or condemned by any governmental or 
quasi-governmental authority for any public or quasi-public use or purpose 
(including sale under threat of such a taking), or if the owner elects to 
convey title to the condemnor by a deed in lieu of condemnation, and as a 
result thereof, in Tenant's reasonable judgment, the Demised Premises cannot 
be used for Tenant's permitted use as set forth herein, then this Lease shall 
cease and terminate on the earlier of (i) the date when title vests in such 
governmental or quasi-governmental authority or (ii) the date upon which such 
governmental or quasi-governmental authority takes possession.  The Fixed 
Rent and Additional Rent shall be abated from and after such date.  

     11.3.     If fifty percent (50%) or less of the Demised Premises, 
Buildings or Land shall be taken or condemned by any governmental or 
quasi-governmental authority for any public or quasi-public use or purpose 
(including sale under threat of such a taking), or if the owner               


                                      14 

<PAGE>

elects to convey title to the condemnor by a deed in lieu of condemnation, 
and this Lease is not terminated as set forth in Section 11.2 above, the 
Fixed Rent and Tenant's Proportionate Share (as defined in Exhibit "C") shall 
be equitably adjusted from and after the earlier of (i) the date when title 
vests in such governmental or quasi-governmental authority or (ii) the date 
upon which such governmental or quasi-governmental authority takes 
possession.  The Lease shall otherwise continue in full force and effect.  

     11.4.     Tenant shall have no claim against Landlord for any portion of 
the amount that may be awarded as damages as a result of any governmental or 
quasi-governmental taking or condemnation (or sale under threat of such 
taking or condemnation) and all rights of Tenant or damages therefore are 
hereby assigned by Tenant to Landlord.  The foregoing shall not, however, 
deprive Tenant of any separate award for moving expenses, dislocation damages 
or for any other award which would not reduce the award payable to Landlord.

12.  CASUALTY DAMAGE.

     12.1.     In the event of damage to or destruction of the Demised 
Premises caused by fire or other casualty, or any such damage or destruction 
to the Buildings or the facilities necessary to provide services and normal 
access to the Demised Premises in accordance herewith, Landlord shall 
undertake to make repairs and restorations with reasonable diligence within 
two hundred forty (240) days of the casualty as hereinafter provided, unless 
this Lease has been terminated by Landlord or Tenant as hereinafter provided 
or unless any mortgagee which is entitled to receive casualty insurance 
proceeds fails to make available to Landlord a sufficient amount of such 
proceeds to cover the cost of such repairs and restoration.  If (i) the 
damage is of such nature or extent that, in Landlord's reasonable judgment, 
more than two hundred forty (240) days would be required (with normal work 
crews and hours) to repair and restore the part of the Demised Premises or 
Buildings which has been damaged, or (ii) the Demised Premises or the 
Buildings is so damaged that, in Landlord's reasonable judgment, it is 
uneconomical to restore or repair the Demised Premises or the Buildings, as 
the case may be, or (iii) less than two (2) years then remain on the current 
Lease Term, Landlord shall so advise Tenant promptly, and either party, in 
the case described in clause (i) above, or Landlord, in the cases described 
in clauses (ii) or (iii) above, within thirty (30) days after any such damage 
or destruction, shall have the right to terminate this Lease by written 
notice to the other, as of the date specified in such notice, which 
termination date shall be no later than ten (10) days after the date of such 
notice.  In the event that less than two (2) years remain on the current 
Lease Term and the damage is of such a nature or extent that, in Landlord's 
reasonable judgment, more than ninety (90) days would be required (with 
normal work crews) to repair and restore the part of the Demised Premises or 
Buildings which has been damaged, Tenant shall have the right to terminate 
this Lease by written notice to Landlord, as of the date specified in such 
notice, which termination date shall be no later than ten (10) days after the 
date of such notice.  

                                      15 

<PAGE>

     12.2.     In the event of fire or other casualty damage, provided this 
Lease is not terminated pursuant to the terms of this Section and is 
otherwise in full force and effect, and sufficient casualty insurance 
proceeds are available for application to such restoration or repair, 
Landlord shall proceed diligently to restore the Demised Premises to 
substantially its condition prior to the occurrence of the damage.  Landlord 
shall not be obligated, however, to repair or restore any improvements, 
alterations or additions in excess of the Building Standard Tenant 
Improvements (whether or not Tenant has the right or the obligation to remove 
the same or is required to leave the same on the Demised Premises as of the 
expiration or earlier termination of this Lease) unless Tenant, in a manner 
reasonably satisfactory to Landlord, assures or agrees to assure payment in 
full of all costs as may be incurred by Landlord in connection therewith.  
(For purposes of this Lease, the Tenant Work shall be deemed representative 
of "Building Standard Tenant Improvements" for the Buildings.)  If there are 
any such improvements, alterations or additions and Tenant does not assure or 
agree to assure payment of the cost of restoration or repair as aforesaid, 
Landlord shall have the right to restore the Demised Premises to 
substantially the same condition as existed prior to the damage, excepting 
such improvements, alterations or additions.  Tenant shall be responsible for 
the repair or restoration of all of Tenant's Owned Property located in or on 
the Demised Premises, subject to Section 7 and such other conditions as 
Landlord may require.

     12.3.     Landlord shall not be required to insure any improvements, 
alterations or additions to the Demised Premises in excess of Building 
Standard Tenant Improvements, or to insure any of Tenant's Owned Property.  
Tenant shall, at its sole expense, insure the value of its leasehold 
improvements, alterations and additions in excess of Building Standard Tenant 
Improvements, for the purpose of providing funds to Landlord and Tenant to 
repair and restore the Demised Premises to substantially its condition prior 
to occurrence of the casualty.

     12.4.     The validity and effect of this Lease shall not be impaired in 
any way by the failure of Landlord to complete repairs and restoration of the 
Demised Premises or of the Buildings within two hundred forty (240) days 
after commencement of the work, even if Landlord had in good faith notified 
Tenant that the repair and restoration could be completed within such period, 
provided that Landlord proceeds diligently with such repair and restoration 
and completes such repair and restoration within two hundred seventy (270) 
days after commencement of the work.  In the event the work is not completed 
within such two hundred seventy (270) day period, Tenant shall have the 
right, by notice given within fifteen (15) days after the expiration of such 
two hundred seventy (270) day period, to terminate the Lease.  In the case of 
damage to the Demised Premises which is of a nature or extent that Tenant's 
continued occupancy is in the judgment of Landlord substantially impaired, 
then the Annual Fixed Rent payable by Tenant hereunder and Tenant's 
Proportionate Share shall be equitably abated or adjusted for the duration of 
such impairment.                                            


                                      16

<PAGE>

     13.  INSURANCE; INDEMNIFICATION OF LANDLORD; WAIVER OF SUBROGATION.

     13.1.     Tenant covenants and agrees to exonerate, indemnify, defend, 
protect and save Landlord, its representatives and Landlord's managing agent, 
if any, harmless from and against any and all claims, demands, expenses, 
losses, suits and damages as may be occasioned by reason of (i) any accident 
or matter occurring on or about the Demised Premises, causing injury to 
persons or damage to property (including, without limitation, the Demised 
Premises), unless such accident or other matter resulted from the negligence 
or otherwise tortious act of Landlord or Landlord's agents or employees, (ii) 
the failure of Tenant fully and faithfully to perform the obligations and 
observe the conditions of this Lease, and (iii) the negligence or otherwise 
tortious act of Tenant or anyone in or about the Project on behalf of or at 
the invitation or right of Tenant. Tenant shall maintain in full force and 
effect, at its own expense, comprehensive general liability insurance 
(including a contractual liability and fire legal liability insurance 
endorsement) naming as an additional insured Landlord and Landlord's managing 
agent, if any, against claims for bodily injury, death or property damage in 
amounts not less than $2,000,000.00 (or such higher limits as may be 
determined by Landlord from time to time) and business interruption insurance 
in an amount sufficient to reimburse Tenant for loss of earnings attributable 
to prevention of access to the Buildings or the Demised Premises for a period 
of at least twelve (12) months.  All policies shall be issued by companies 
having a Best's financial rating of A or better and a size class rating of 
XII (12) or larger or otherwise acceptable to Landlord.  At or prior to the 
Commencement Date, Tenant shall deposit certificates of such insurance with 
Landlord and shall deposit with Landlord renewals thereof at least fifteen 
(15) days prior to the expiration thereof.  Such policy or policies of 
insurance or certificates thereof shall have attached thereto an endorsement 
that such policy shall not be canceled without at least thirty (30) days 
prior written notice to Landlord and Landlord's managing agent, if any, that 
no act or omission of Tenant shall invalidate the interest of Landlord under 
such insurance and expressly waiving all rights of subrogation as set forth 
below. At Landlord's request, Tenant shall provide Landlord with a letter 
from an authorized representative of its insurance carrier stating that 
Tenant's current and effective insurance coverage complies with the 
requirements contained herein.  Any insurance required of Tenant hereunder 
may be furnished by Tenant under a blanket policy carried by it, provided 
that such blanket policy shall contain an endorsement that names Landlord as 
an additional insured, specifically references the Demised Premises, and 
guarantees a minimum limit available for the Demised Premises

                                          17
<PAGE>
 
equal to or greater than the insurance amounts required under this Section. 
Each policy evidencing the insurance to be carried by Tenant hereunder shall 
contain a clause that such policy and the coverage evidenced thereby shall be 
primary with respect to any policies carried by Landlord, and that any 
coverage carried by Landlord shall be excess insurance.

     13.2.     Landlord and Tenant hereby release the other from any and all 
liability or responsibility to the other or anyone claiming through or under 
them by way of subrogation or otherwise for any loss or damage to property 
covered by insurance then in force, even if any such fire or other casualty 
occurrence shall have been caused by the fault or negligence of the other 
party, or anyone for whom such party may be responsible.  This release shall 
be applicable and in full force and effect, however, only to the extent of 
and with respect to any loss or damage occurring during such time as the 
policy or policies of insurance covering such loss shall contain a clause or 
endorsement to the effect that this release shall not adversely affect or 
impair such insurance or prejudice the right of the insured to recover 
thereunder.  To the extent available, Landlord and Tenant further agree to 
provide such endorsements for such insurance policies agreeing to the waiver 
of subrogation as required herein.

14.  INSPECTION; ACCESS; CHANGES IN BUILDING FACILITIES.

     14.1.     Upon reasonable notice and at reasonable times, accompanied by 
Tenant's employee or agent, Landlord and its agents or other representatives 
shall be permitted to enter the Demised Premises (i) to examine, inspect and 
protect the Demised Premises and the Buildings, (ii) during the last nine (9) 
months of the Lease Term, or prior thereto if Tenant vacates the Demised 
Premises, to show the Demised Premises to prospective tenants and to affix to 
any suitable part of the Buildings a notice for letting the Demised Premises, 
or (iii) to show the Demised Premises to prospective purchasers, lenders and 
other interested parties and to affix to any suitable part of the Buildings a 
notice for sale of the Buildings.  Notwithstanding the foregoing, notice of 
entry shall not be required in the event of an emergency.

     14.2.     Upon reasonable notice and at reasonable times, accompanied by 
Tenant's employee or agent, Landlord shall have access to and use of all 
areas in the Demised Premises (including exterior Buildings walls, core 
corridor walls and doors and any core corridor entrances), any roofs adjacent 
to the Demised Premises, and any space in or adjacent to the Demised Premises 
used for shafts, stacks, pipes, conduits, fan rooms, ducts, electric or other 
utilities, sinks or other Buildings facilities, as well as access to and 
through the Demised Premises for the purpose of operation, maintenance, 
decoration and repair, provided, however, that except in emergencies such 
access shall not be exercised so as to interfere unreasonably with Tenant's 
use of the Demised Premises. Tenant shall permit Landlord to install, use and 
maintain pipes, ducts and conduits in and through the Demised Premises, 
provided that the installation work is performed at such times and by such 
methods as will not materially interfere with Tenant's use of the Demised 
Premises, materially reduce the floor 

                                          18

<PAGE>

area thereof or materially and adversely affect Tenant's layout.  Landlord 
and Tenant shall cooperate with each other in the location of Landlord's and 
Tenant's facilities requiring such access.

     14.3.     Landlord reserves the right at any time upon ten (10) days' 
prior notice, without incurring any liability to Tenant therefor, to make 
such changes in or to the interior and exterior of the Buildings and the 
fixtures and equipment thereof, as well as in or to the entrances, halls, 
foyers, passages, doors, doorways, corridors, elevators, if any, stairways, 
bathrooms and other public parts thereof, and to the Land and any other 
improvements thereon, as Landlord may deem necessary or desirable; provided 
that there shall be no change that materially detracts from the character or 
quality of the Buildings or, in Tenant's reasonable judgment, materially and 
adversely affects Tenant's use and enjoyment of the Demised Premises and 
other rights granted pursuant to this Lease.

     14.4.     In the event of a dispute arising concerning the provisions of 
this Section 14, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 32 hereof.

15.  DEFAULT.  Any other provisions in this Lease notwithstanding, it shall 
be an event of default ("Event of Default") under this Lease if: (i) Tenant 
fails to pay any installment of Fixed Rent, Additional Rent or other sum 
payable by Tenant hereunder when due and such failure continues for a period 
of ten (10) days after written notice from Landlord of such failure, or (ii) 
Tenant fails to observe or perform any other covenant or agreement of Tenant 
herein contained and such failure continues after written notice given by or 
on behalf of Landlord to Tenant for more than 30 days, or (iii) Tenant uses 
or occupies the Demised Premises other than as permitted hereunder, or (iv) 
Tenant assigns or sublets, or purports to assign or sublet, the Demised 
Premises or any part thereof other than in the manner and upon the conditions 
set forth herein, or (v) Tenant abandons or vacates the Demised Premises 
without paying rent, (vi) Tenant files a petition commencing a voluntary 
case, or has filed against it a petition commencing an involuntary case, 
under the Federal Bankruptcy Code (Title 11 of the United States Code), as 
now or hereafter in effect, or under any similar law, or files or has filed 
against it a petition or answer in bankruptcy or for reorganization or for an 
arrangement pursuant to any state bankruptcy law or any similar state law, 
and, in the case of any such involuntary action, such action shall not be 
dismissed, discharged or denied within sixty (60) days after the filing 
thereof, or Tenant consents or acquiesces in the filing thereof, or (viii) if 
Tenant is a banking organization, Tenant files an application for protection, 
voluntary liquidation or dissolution applicable to banking organizations, or 
(ix) a custodian, receiver, trustee or liquidator of Tenant or of all or 
substantially all of Tenant's property or of the Demised Premises shall be 
appointed in any proceedings brought by or against Tenant and, in the latter 
case, such entity shall not be discharged within sixty (60) days after such 
appointment or Tenant consents to or acquiesces in such appointment, or (x) 
Tenant shall generally not pay Tenant's debts as such debts become due, or 
shall make an assignment for 

                                          19

<PAGE>

the benefit of creditors, or shall admit in writing its inability to pay its 
debts generally as they become due, or (xi) any of the foregoing occurs as to 
any guarantor or surety of Tenant's performance under this Lease, or such 
guarantor or surety defaults on any provision under its guaranty or 
suretyship agreement.  The notice and grace period provisions in clauses (i) 
and (ii) above shall have no application to the Events of Default referred to 
in clauses (iii) through (x) above or, to the extent applicable, (xi).

16.  LANDLORD'S REMEDIES.

     16.1.     Upon the occurrence of any Event of Default, Landlord at any 
time thereafter may at its option exercise any one or more of the following 
remedies: 

          (a)  Landlord may terminate this Lease, by written notice to 
Tenant, without any right by Tenant to reinstate its rights by payment of 
rent due or other performance of the terms and conditions hereof.  Upon such 
termination Tenant shall immediately surrender possession of the Demised 
Premises to Landlord, and Landlord shall immediately become entitled to 
receive from Tenant an amount equal to the aggregate of all Fixed Rent and 
Additional Rent (which Additional Rent shall be fixed at the level of the 
last complete Operating Year prior to such termination) reserved under this 
Lease for the balance of the Lease Term, determined as of the date of such 
termination.

          (b)  Landlord may, at Landlord's option, with or without 
terminating this Lease, enter upon the Demised Premises and remove any and 
all persons therefrom and take and retain possession thereof by any means 
available to Landlord, including summary dispossess proceedings.  

          (c)  If Landlord elects to terminate Tenant's right to possession 
only, without terminating the Lease, Landlord may, at the Landlord's option, 
enter into the Demised Premises, remove Tenant's signs and other evidences of 
tenancy, and take and hold possession thereof as hereinabove provided, 
without such entry and possession terminating the Lease or releasing Tenant, 
in whole or in part, from Tenant's obligations to pay the rent hereunder for 
the full term or for any other of its obligations under this Lease.  Landlord 
may, but will not be under obligation to, relet all or any part of the 
Demised Premises in any manner, for any term, for such rent and upon terms 
satisfactory to Landlord and may decorate or make any repairs, changes, 
alterations or additions in or to the Demised Premises that may be necessary 
or convenient.  If Landlord does not relet the Demised Premises, Tenant will 
pay the Landlord on demand all amounts due from Tenant to Landlord under this 
Lease for the remainder of the Lease Term.  If the Demised Premises are 
relet, Tenant shall pay any excess of the rent over the actual proceeds of 
such reletting, net of all expenses, including repairs or construction costs 
and leasing commissions.  If the Demised Premises are at the time of any 
Event of Default sublet or leased by Tenant to others, Landlord may collect 
rents due from any

                                          20

<PAGE>

subtenant or other tenant and apply such rents to the rent and other amounts 
due hereunder without in any way affecting Tenant's obligation to Landlord 
hereunder.

          (d)  Landlord may declare Fixed Rent and all items of Additional 
Rent (the amount thereof to be based on historical amounts and Landlord's 
estimates for future amounts) for the entire balance of the then current 
Lease Term immediately due and payable, together with all other charges, 
payments, costs, and expenses payable by Tenant as though such amounts were 
payable in advance on the date the Event of Default occurred.  

          (e)  Landlord may remove all persons and property from the Demised 
Premises, and store such property in a public warehouse or elsewhere at the 
cost of and for the account of Tenant, upon service of notice or resort to 
legal process and without being deemed guilty of trespass or becoming liable 
for any loss or damage which may be occasioned thereby. 

     16.2.     No expiration or termination of this Lease Term by operation 
of law or otherwise (except as expressly provided herein), and no 
repossession of the Demised Premises or any part thereof shall relieve Tenant 
of its liabilities and obligations hereunder, all of which shall survive such 
expiration, termination or repossession, and Landlord may, at its option, sue 
for and collect all rent and other charges due hereunder at any time as and 
when such charges accrue.  

     16.3.     In the event of breach or threatened breach by Tenant of any 
provision of this Lease, Landlord shall have the right of injunction and the 
right to invoke any remedy allowed at law or in equity in addition to other 
remedies provided for herein.

     16.4.     Tenant hereby expressly waives any and all rights of 
redemption granted by or under any present or future law in the event this 
Lease is terminated, or in the event of Landlord obtaining possession of the 
Demised Premises, or in the event Tenant is evicted or dispossessed for any 
cause, by reason of violation by Tenant of any of the provisions of this 
Lease.  

     16.5.     No right or remedy herein conferred upon or reserved to 
Landlord is intended to be exclusive of any other right or remedy herein or 
by law provided, but each shall be cumulative and in addition to every other 
right or remedy given herein or now or hereafter existing at law or in equity 
or by statute.

     16.6.     In the event that Landlord commences suit for the repossession 
of the Demised Premises, for the recovery of rent or any other amount due 
under the provisions of this Lease, or because of the breach of any other 
covenant herein contained on the part of Tenant to be kept or performed, 
Tenant shall, if Landlord shall prevail in such suit, pay to Landlord all 
reasonable expenses incurred in connection therewith, including reasonable 
attorneys' fees.

                                          21

<PAGE>

17.  LANDLORD'S RIGHT TO CURE TENANT'S DEFAULT.  If Tenant defaults in the 
making of any payment or in the doing of any act herein required to be made 
or done by Tenant (including expiration of any applicable cure periods), then 
Landlord may, but shall not be required to, make such payment or do such act, 
and charge the amount of Landlord's expense, with interest accruing and 
payable thereon at the Default Rate as of the date of the expenditure by 
Landlord or as of the date of payment thereof by Tenant, whichever is higher, 
from the date paid or incurred by Landlord to the date of payment thereof by 
Tenant.  Such payment and interest shall constitute Additional Rent hereunder 
due and payable with the next monthly installment of Fixed Rent, but the 
making of such payment or the taking of such action by Landlord shall not 
operate to cure such default by Tenant or to estop Landlord from the pursuit 
of any remedy to which Landlord would otherwise be entitled.

18.  TENANT'S REMEDIES.  In the event of breach or threatened breach by 
Landlord of any provision of this Lease, Tenant shall have the right of 
injunction and the right to invoke any remedy allowed at law or in equity in 
addition to other remedies provided for herein.

19.  ESTOPPEL CERTIFICATE.  Tenant shall, at any time and from time to time, 
at the request of Landlord, upon ten (10) business days notice, execute and 
deliver to Landlord a certificate in the form of Exhibit "G" attached hereto 
or some other reasonable form supplied by Landlord, it being intended that 
any such certificate delivered pursuant hereto may be relied upon by others 
with whom Landlord may be dealing.

20.  HOLDING OVER.  If Tenant retains possession of the Demised Premises or 
any part thereof after the termination of this Lease by expiration of the 
Lease Term or otherwise, in the absence of any written agreement between 
Landlord and Tenant concerning any such continuance of the Lease Term, Tenant 
shall pay Landlord (i) an amount, calculated on a per diem basis for each day 
of such unlawful retention, equal to the greater of (a) 150% the Annual Fixed 
Rent in effect immediately prior to the expiration or earlier termination of 
the Lease Term, or (b) the market rental for the Demised Premises, as 
determined by Landlord, for the time Tenant thus remains in possession, plus, 
in each case, all Additional Rent and other sums payable hereunder.  Without 
limiting any rights and remedies of Landlord resulting by reason of the 
wrongful holding over by Tenant, or creating any right in Tenant to continue 
in possession of the Demised Premises, all Tenant's obligations with respect 
to the use, occupancy and maintenance of the Demised Premises shall continue 
during such period of unlawful retention.

21.  SURRENDER OF DEMISED PREMISES.  Tenant shall, at the expiration or 
earlier termination of this Lease, promptly surrender the Demised Premises in 
good order and condition and in conformity with the applicable provisions of 
this Lease, excepting only reasonable wear and tear and casualty.  Any of 
Tenant's Owned Property which shall remain in the Demised Premises after the 
expiration or earlier termination of this Lease shall be deemed to have been 
abandoned and either may be retained by Landlord as Landlord's 


                                          22
<PAGE>

property or may be disposed of in such manner as Landlord may see fit, 
provided that, notwithstanding the foregoing, Tenant shall, upon request of 
Landlord made prior to or within a reasonable period after the expiration or 
earlier termination of this Lease, promptly remove from the Buildings any 
such Tenant's Owned Property at Tenant's sole cost and expense.  Should 
Tenant fail to do so, Landlord may do so, and the cost and expense thereof, 
together with interest at the Default Rate from the date such costs and 
expenses are incurred by Landlord, shall be paid by Tenant to Landlord as 
"Additional Rent" within fifteen (15) days after Tenant is billed therefor.  
If such Tenant's Owned Property or any part thereof shall be sold by 
Landlord, Landlord may receive and retain the proceeds of such sale as 
Landlord's property.

22.  SUBORDINATION, ATTORNMENT AND NONDISTURBANCE.

     22.1.     This Lease and the estate, interest and rights hereby created 
are subordinate to any mortgage now or hereafter placed upon the Buildings or 
the Land or any estate or interest therein, including, without limitation, 
any mortgage on any leasehold estate, and to all renewals, modifications, 
consolidations, replacements and extensions of same as well as any 
substitutions therefor.  Tenant agrees that in the event any person, firm, 
corporation or other entity acquires the right to possession of the Buildings 
or the Land, including any mortgagee or holder of any estate or interest 
having priority over this Lease, Tenant shall, if requested by such person, 
firm, corporation or other entity, attorn to and become the tenant of such 
person, firm, corporation or other entity, upon the same terms and conditions 
as are set forth herein for the balance of the Lease Term.  Notwithstanding 
the foregoing, any mortgagee may, at any time, subordinate its mortgage to 
this Lease, without Tenant's consent, by notice in writing to Tenant, and 
thereupon this Lease shall be deemed prior to such mortgage without regard to 
their respective dates of execution and delivery, and in that event, such 
mortgagee shall have the same rights with respect to this Lease as though it 
had been executed prior to the execution and delivery of the mortgage.  
Tenant, if requested by Landlord, shall execute such instruments in 
recordable form as may reasonably be required by Landlord in order to confirm 
or effect the subordination or priority of this Lease, as the case may be, 
and the attornment of Tenant to future landlords in accordance with the terms 
of this Section.

     22.2.     With respect to any existing lease, estate, interest and/or 
mortgage, no later than the date sixty (60) days after Tenant executes and 
delivers this Lease, and with respect to any future lease, estate and/or 
mortgage, on or before the effective date thereof, Landlord shall obtain from 
its lessor and/or mortgagee, as the case may be, a written agreement with 
Tenant in a form substantially in conformity with the form attached hereto as 
Exhibit "M", which agreement shall be binding on their respective legal 
representatives, successors and assigns and shall provide, among other 
provisions, that so long as this Lease shall be in full force and effect (a) 
Tenant shall not be joined as a defendant in any proceeding which may be 
instituted to terminate or enforce the lease or to foreclose or enforce the 
mortgage, and (b) Tenant's possession and use of the Demised Premises in 
accordance with the provisions of this 

                                          23
<PAGE>

Lease shall not be affected or disturbed by reason of the subordination to or 
any modification of or default under the ground or underlying lease or 
mortgage. If such lessor and/or mortgagee or any successor -in-interest shall 
succeed to the rights of Landlord under this Lease, whether through 
possession, surrender, assignment, subletting, judicial or foreclosure 
action, or delivery of a deed or otherwise, Tenant will attorn to and 
recognize such successor-landlord as Tenant's landlord and the 
successor-landlord will accept such attornment and recognize Tenant's rights 
of possession and use of the Demised Premises in accordance with the 
provisions of this Lease.  This clause shall be self-operative and no further 
instrument of attornment or recognition shall be required.

23.  BROKERS.  The parties agree that Buschman/Jackson-Cross, Inc. (the 
"Broker") and Cushman and Wakefield, Inc. (the "Cooperating Broker") are the 
real estate broker and cooperating broker, respectively, who have brought the 
parties together in connection with the transactions contemplated hereby and 
that Landlord shall be responsible for all brokerage commissions to be paid 
to Broker and Cooperating Broker on the terms and conditions set forth in a 
separate agreement between Landlord and Broker. Each party represents and 
warrants to the other that he, she or they have not made any agreement or 
taken any action which may cause anyone (other than Broker or Cooperating 
Broker) to become entitled to a commission as a result of the transactions 
contemplated by this Lease, and each will indemnify and defend the other from 
any and all claims, actual or threatened, for compensation by any such third 
person (other than Broker or Cooperating Broker) by reason of such party's 
breach of his, her or their representation or warranty contained in this 
Section.

24.  NOTICES.  All notices or other communications hereunder shall be in 
writing and shall be sent to the address of the party for whom such notice is 
intended as set forth below (or to such other address as a party may 
hereafter designate for itself by notice to the other party as required 
hereby).  Any such notice or communication shall be sufficient if sent by 
registered or certified mail, return receipt requested, postage prepaid, by 
prepaid overnight delivery service, or by hand delivery.  Any such notice or 
communication shall be deemed to have been given: if hand delivered, then 
when delivered or when such delivery is refused; if sent by an overnight 
delivery service, then on the day following the day deposited with such 
service; or if sent by registered or certified mail, then on the third 
business day following the date deposited in the United States mails.  All 
notices and communications to Tenant may also be given by leaving same at the 
Demised Premises during the hours set forth in Section 8 hereof.

                                          24

<PAGE>

     24.1. If to Landlord:

                          South Brunswick Investors, L.P.
                          c/o South Brunswick Investment Company, L.L.C.
                          Suite 1105, One Logan Square
                          Philadelphia, PA  19103
                          Attention:  Clay W. Hamlin, III
                    
                          With a required copy to:
                    
                          Saul, Ewing, Remick & Saul
                          3800 Centre Square West
                          Philadelphia, PA  19102
                          Attention:  F. Michael Wysocki, Esquire

     Notice to mortgagees:    All notices by Tenant to Landlord relating to
                          any default by Landlord under this Lease must also 
                          be given by Tenant to the holders of any mortgage
                          on the Land and/or Buildings of which Tenant has
                          notice.

     24.2.   If to Tenant:

                          Teleport Communications Group Inc.
                          One Teleport Drive
                          Staten Island, NY  10311
                          Attention:  General Counsel
                  
                          With a required copy to:
                  
                          Teleport Communications Group Inc.
                          One Teleport Drive
                          Staten Island, NY  10311
                          Attention: S.V.P. Engineering
                  
                          Teleport Communications Group Inc.
                          One Teleport Drive
                          Staten Island, NY  10311
                          Attention: Controller

25.  [INTENTIONALLY OMITTED]

                                          25
\
<PAGE>

26.  TERMINATION OPTION.

     26.1.     Tenant, by notice to Landlord (the "Early Termination Notice") 
given no later than one (1) year prior to the Termination Date (as 
hereinafter defined), shall have the one-time right to terminate this Lease 
(the "Termination Option") effective on the date which is three (3) years 
prior to the then-current expiration date of the Lease (the "Termination 
Date").

     26.2.     If Tenant shall exercise the Termination Option, then:

               (i)  Tenant shall pay to Landlord an amount (the "Termination
                    Fee") equal to the sum of  (a) 15 months Fixed Rent for the
                    Demised Premises (calculated based upon the rent scheduled
                    to be paid during the fifteen (15) month period commencing
                    on the Termination Date) and (b) the unamortized portions of
                    any Tenant allowances granted by Landlord pursuant to
                    Sections 27 and 28 and Exhibit "L" hereof and any prepaid
                    broker's commissions (with amortization and such unamortized
                    portions being calculated based upon a ten (10) year level
                    payment amortization schedule at an interest rate of 10%),
                    which Termination Fee shall be due and payable fifty percent
                    (50%) with the delivery of the Early Termination Notice and
                    the balance upon the Termination Date; and

               (ii) the Term shall expire on the Termination Date as if the
                    Termination Date were the Expiration Date, but such
                    expiration shall not release Tenant from its obligations
                    with respect to periods prior thereto.

     26.3.     The Termination Option may only be exercised during the 
initial Term of the Lease (as the same may have been extended pursuant to 
Section 27 and/or 28 hereof) and not during either of the Renewal Terms 
provided for in Section 29.  Moreover, the Termination Option may not be 
exercised by Tenant if Tenant is in default under the terms of this Lease on 
the date which is twelve (12) months prior to the Termination Date.

27.  FIRST OPTION SPACE.

     27.1.     Tenant is hereby granted the option (the "First Option"), to 
be exercised by Tenant, one or more times, to lease certain space containing 
up to 26,425 rentable square feet in the location identified on Exhibit "A" 
on the second floor of Building 2 (the "First Option Space") in one or more 
increments of at least 5,000 rentable square feet each (or the balance of the 
second floor of Building 2, if less).

     27.2.     Tenant shall exercise the First Option, if at all, by giving 
one or more notices (each, a "First Option Notice") to Landlord on or before 
April 1, 1997.  

                                          26

<PAGE>

     27.3.     If Tenant elects to exercise the First Option for all or part 
of the First Option Space (the "Exercised First Option Space"):

               (i)  The Exercised First Option Space shall become part of the
                    Demised Premises and all of the terms and conditions of this
                    Lease shall apply to the Exercised First Option Space,
                    except as otherwise provided herein.

               (ii) The commencement date of the Term as to such Exercised First
                    Option Space (the "Exercised First Option Space Commencement
                    Date") shall be the date upon which Landlord delivers the
                    Exercised First Option Space to Tenant (1) free of other
                    tenants and occupants and (2) with all of Landlord's First
                    Option Improvements (as defined in Exhibit "D") completed. 
                    The Exercised First Option Space Commencement Date shall
                    take place not more than ninety (90) days after Landlord's
                    receipt of the First Option Notice or, if the Exercised
                    First Option Space comprises less than the entire second
                    floor of Building 2, not more than ninety (90) days after
                    Landlord and Tenant agree on the location of such Exercised
                    First Option Space pursuant to Section 27.4 below; provided,
                    however, that such ninety (90) day period shall be extended
                    by the duration of any delays due to governmental
                    regulation, unusual scarcity of or inability to obtain labor
                    or materials, labor difficulties, casualty or any other
                    causes not within Landlord's reasonable control.  In the
                    event that the Exercised First Option Space Commencement
                    Date shall not occur within such ninety (90) day period (as
                    extended), Tenant shall (i) receive a credit against Rent
                    and Additional Rent due for such Exercised First Option
                    Space in an amount equal to 200% of the daily Rent due for
                    such Exercised First Option Space multiplied by the number
                    of days by which the Exercised First Option Space
                    Commencement Date is delayed beyond the expiration of such
                    ninety (90) day period (as extended), and (ii) with prior
                    written notice to Landlord be entitled to complete the
                    Landlord's First Option Improvements and charge Landlord for
                    all costs incurred by Tenant thereby.

              (iii) The Annual Fixed Rent for the Exercised First Option
                    Space shall be that set forth in Exhibit "B".  Tenant
                    shall commence paying Annual Fixed Rent and Additional
                    Rent for any Exercised First Option Space ninety (90)
                    days after the Exercised First Option Space
                    Commencement Date for such space (such date, for such
                    space, the "Exercised First Option Space Rent
                    Commencement Date").  

               (iv) Tenant's Proportionate Share from and after the Exercised
                    First Option Space Rent Commencement Date for such space
                    shall be increased based 

                                          27

<PAGE>

                    upon the number of additional rentable square feet included
                    in such Exercised First Option Space.  The Operating Expense
                    Allowance and Tax Allowance for all Exercised First Option
                    Space shall be those set forth in Exhibit "C".

               (v)  Tenant shall, within twenty (20) business days after
                    exercising the First Option, submit to Landlord proposed
                    plans and specifications for improvements to be constructed
                    by Tenant in the Exercised First Option Space ("Tenant's
                    First Option Improvements"), which plans and specifications
                    shall be subject to Landlord's approval, not to be
                    unreasonably withheld or delayed.  

                    Landlord shall grant Tenant a Tenant allowance of up to
                    Forty Dollars ($40) per square foot of Exercised First
                    Option Space leased by Tenant pursuant to this Section for
                    construction of the Tenant's First Option Improvements,
                    subject to compliance by Tenant with the provisions in
                    Exhibit "L" in constructing the First Option Space
                    Improvements.  Such allowance shall be payable no earlier
                    than the Exercised First Option Space Rent Commencement Date
                    for such space.

     27.4.     Tenant may exercise the First Option for all or part of the 
second floor of Building 2, provided that, if Tenant exercises the First 
Option for less than all of the second floor of Building 2, then Landlord and 
Tenant shall mutually agree upon the location of the First Option Space and, 
further provided, that the remaining portions of the second floor of Building 
2 must be, in Landlord's reasonable judgment, independently marketable.

     27.5.     If Tenant exercises the First Option for the entire second 
floor of Building 2, the Term of the Lease with respect to the entire Demised 
Premises (including the Exercised First Option Space) shall automatically be 
extended to the date which is ten (10) years from the end of the month in 
which falls the latest Exercised First Option Space Rent Commencement Date.

     27.6.     The First Option may not be exercised by Tenant if Tenant is 
in default under the terms of this Lease on the date of exercise of the First 
Option.

                                          28

<PAGE>

28.  SECOND OPTION SPACE.

     28.1.     Provided that Tenant has exercised the First Option for the 
entire second floor of Building 2, Tenant is hereby granted the option (the 
"Second Option"), to be exercised by Tenant one or more times, to lease 
certain space containing up to 28,410 rentable square feet in the location 
identified on Exhibit "A" on the third floor of Building 2 (the "Second 
Option Space"), in one or more increments of at least 5,000 rentable square 
feet each (or the balance of the third floor of Building 2, if less).  

     28.2.     Tenant shall exercise the Second Option, if at all, by giving 
one or more notices (each, a "Second Option Notice") to Landlord on or before 
April 1, 1998.  

     28.3.     If Tenant elects to exercise the Second Option for all or part 
of the Second Option Space (the "Exercised Second Option Space"):

               (i)  The Exercised Second Option Space shall become part of the
                    Demised Premises and all of the terms and conditions of this
                    Lease shall apply to the Exercised Second Option Space,
                    except as otherwise provided herein.

               (ii) The commencement date of the Term as to such Exercised
                    Second Option Space (the "Exercised Second Option Space
                    Commencement Date") shall be the date upon which Landlord
                    delivers the Exercised Second Option Space to Tenant (1)
                    free of other tenants and occupants and (2) with all of
                    Landlord's Second Option Improvements (as defined in Exhibit
                    "D") completed.  The Exercised Second Option Space
                    Commencement Date shall take place not more than ninety (90)
                    days after Landlord's receipt of the Second Option Notice
                    or, if the Exercised Second Option Space comprises less than
                    the entire third floor of Building 2, not more than ninety
                    (90) days after Landlord and Tenant agree on the location of
                    such Exercised Second Option Space pursuant to Section 28.4
                    below; provided, however, that such ninety (90) day period
                    shall be extended by the duration of any delays due to
                    governmental regulation, unusual scarcity of or inability to
                    obtain labor or materials, labor difficulties, casualty or
                    any other causes not within Landlord's reasonable control. 
                    In the event that the Exercised Second Option Space
                    Commencement Date shall not occur within such ninety (90)
                    day period (as extended), Tenant shall (i) receive a credit
                    against Rent and Additional Rent due for such Exercised
                    Second Option Space in an amount equal to 200% of the daily
                    Rent due for such Exercised Second Option Space multiplied
                    by the number of days by which the Exercised Second Option
                    Space Commencement Date is delayed beyond the 

                                          29

<PAGE>


                    expiration of such ninety (90) day period (as extended), and
                    (ii) with prior written notice to Landlord be entitled to
                    complete the Landlord's Second Option Improvements and
                    charge Landlord for all costs incurred by Tenant thereby.

              (iii) The Annual Fixed Rent for the Exercised Second Option
                    Space shall be that set forth in Exhibit "B".  Tenant
                    shall commence paying Annual Fixed Rent and Additional
                    Rent for any Exercised Second Option Space ninety (90)
                    days after the Exercised Second Option Space
                    Commencement Date for such space (such date, for such
                    space, the "Exercised Second Option Rent Commencement
                    Date").

               (iv) Tenant's Proportionate Share from and after the Exercised
                    Second Option Space Rent Commencement for such space shall
                    be increased based upon the number of additional rentable
                    square feet included in such Exercised Second Option Space. 
                    The Operating Expense Allowance and Tax Allowance for all
                    Exercised Second Option Space shall be those set forth in
                    Exhibit "C".

               (v)  Tenant shall, within twenty (20) business days after 
                    exercising the Second Option, submit to Landlord proposed 
                    plans and specifications for improvements to be 
                    constructed by Tenant in the Exercised Second Option 
                    Space ("Tenant's Second Option Improvements"), which 
                    plans and specifications shall be subject to Landlord's 
                    approval, not to be unreasonably withheld or delayed.  

                    Landlord shall grant Tenant a Tenant allowance of up to
                    Forty Dollars ($40) per square foot of Exercised Second
                    Option Space leased by Tenant pursuant to this Section for
                    construction of the Tenant's Second Option Improvements,
                    subject to compliance by Tenant with the provisions in
                    Exhibit "L" in constructing the Second Option Space
                    Improvements.  Such allowance shall be payable no earlier
                    than the Exercised Second Option Space Rent Commencement
                    Date for such space.

     28.4.     Tenant may exercise the Second Option for all or part of the 
third floor of Building 2, provided that, if Tenant exercises the Second 
Option for less than all of the third floor of Building 2, then Landlord and 
Tenant shall mutually agree upon the location of the Second Option Space and, 
further provided, that the remaining portions of the third floor of Building 
2 must be, in Landlord's reasonable judgment, independently marketable.

                                          30

<PAGE>

     28.5.     If Tenant exercises the Second Option for the entire third floor
of Building 2, the Term of the Lease with respect to the entire Demised Premises
(including the Exercised Second Option Space) shall automatically be extended to
the date which is ten (10) years from the end of the month in which falls the
latest Exercised Second Option Space Rent Commencement Date.

     28.6.     The Second Option may not be exercised by Tenant if Tenant is 
in default under the terms of this Lease on the date of exercise of the 
Second Option.

     28.7.     In the event the Tenant does not exercise any portion of the 
First Option, the Second Option shall apply to the second floor of Building 2 
rather than the third floor (and all references in Sections 28.1 through 28.6 
shall be deemed to refer to the second floor), and Tenant shall have no 
option to lease any space on the third floor.

     28.8.       Tenant will, from the Commencement Date hereof until the 
earlier of (i) the Second Option Space Commencement Date or (ii) July 1, 
1998, pay Landlord each month in advance as Additional Rent the sum of 
$7,102.50 (the "Option Payments") as consideration for the Second Option.  If 
Tenant exercises the First Option for the entire second floor of Building 2 
in accordance with provisions of Section 27 and the Second Option for the 
entire third floor of Building 2 in accordance with the provisions of this 
Section, Landlord will credit all Option Payment monies paid to Landlord 
against Fixed Rent and Additional Rent due under this Lease, until all such 
Option Payments have been fully recovered by Tenant.  If Tenant exercises the 
Second Option for space on the second floor of Building 2 pursuant to the 
provisions of Section 28.6 or for less than all of the third floor of 
Building 2 pursuant to the provisions of Section 28.7, Tenant shall not be 
entitled to any credit for Option Payment monies paid to Landlord. 

29.  RENEWAL TERMS.  Tenant shall have the option to extend the term of this 
Lease for the entire Demised Premises for two consecutive five-year terms 
(each a "Renewal Term"), on the same terms and conditions as set forth herein 
except that (i) Tenant shall be entitled to a Tenant Allowance at the 
commencement of each Renewal Term equal to Ten Dollars ($10) per square foot 
included in the Demised Premises, and (ii) Tenant shall not be entitled to 
any further Renewal Terms after the second Renewal Term.  The Annual Fixed 
Rent during each Renewal Term is set forth in Exhibit "B" hereto.  Each 
option to extend shall be exercised by written notice to Landlord given at 
least 270 days prior to the then-current expiration  date for the Term.  
Notwithstanding anything herein to the contrary, the term shall not be 
extended if Tenant is in default under the terms of this Lease on the date 
which is 270 days prior to the commencement of a Renewal Term.  As used in 
this Lease, the word "Term" and the words "term of this Lease" shall mean the 
initial Lease Term, any extensions pursuant to Sections 27 and/or 28 and any 
Renewal Terms which may become effective.

                                          31

<PAGE>

30.  SIGNS.

     30.1.     Tenant may, subject to approval of Landlord not to be 
unreasonably withheld, place its signs on the entrance doors to the Demised 
Premises and in hallways or elevator lobbies on floors wholly leased by 
Tenant. On floors partially leased by Tenant, Tenant may place its signs on 
entrance doors to the Demised Premises and, at Tenant's expense, Landlord 
shall place signs in the hallways leading to the Demised Premises which give 
direction to the Demised Premises.

     30.2.     Landlord, at its expense, shall place a directory board in the 
lobby of Building 2 and, at Tenant's option and expense, shall affix thereto 
Tenant's name and the name of each division, subsidiary, affiliate, partner 
or subtenant of Tenant that is located in the Buildings or within the Project 
limits.  

     30.3.     (a)  So long as Tenant shall lease sixty percent (60%) or more 
of the rentable area in the Buildings, it shall have the right, upon 
Landlord's approval, to (1) name Building 2, and (2) design and designate the 
location of signs naming Building 2.

               (b)  If Tenant shall lease less than sixty percent (60%) of 
the rentable area in the Buildings and if at any time after the execution of 
this Lease Landlord changes the names of the Buildings or installs new or 
substitute signs which are not the names of the Buildings, Landlord shall 
notify Tenant at least sixty (60) days prior to the date of the proposed 
change.

     30.4.     Neither Tenant nor Landlord shall install or permit 
installation of any signs, sculptures and/or graphics which adversely reflect 
on the dignity or character of the Project as a first-class office Project.

     30.5.     In the event of a dispute arising concerning the provisions of 
this Section 30, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 32 hereof.

31.  PARKING.

     31.1.     (a)  Landlord shall, at its expense, provide Tenant with 438 
self-parking spaces (which number is based on a minimum of five parking 
spaces per 1,000 rentable square feet in the Demised Premises) within the 
Building Parking Area and Visitors Parking Area (collectively, the "Parking 
Areas") for Tenant's use.  The Parking Areas are shown on Exhibit "K".  The 
Parking Areas shall be available for use twenty-four (24) hours a day, every 
day of the year during the term of this Lease and shall be illuminated when 
necessary to maintain a safe environment.  Further, Landlord shall, at its 
expense, keep and maintain the Parking Areas in a clean, safe and first-class 
condition.

                                          32
<PAGE>


               (b)  If Tenant, its employees, licensees or guests are not 
able to use the Parking Areas and access ways thereto because of unauthorized 
use thereof by others, Landlord shall take whatever steps are necessary to 
end and prevent further unauthorized use including, if appropriate, posting 
signs, distributing parking stickers and towing away unauthorized vehicles.

     31.2.     Whenever Tenant shall lease additional space in the Buildings, 
the minimum number of parking spaces in the Building Parking Area allocated 
to Tenant may, at Tenant's option, be increased at no additional cost to 
Tenant by five parking spaces per 1,000 rentable square feet of additional 
space leased by Tenant.

     31.3.     During the terms of this Lease, Landlord shall reserve (as a 
component of the spaces allocated to Tenant pursuant to Section 31.1) at 
least fifty percent (50%) of the parking spaces in the Visitors Parking Area, 
for use by invitees of Tenant and the other tenants in the Buildings.  These 
parking spaces shall be designated for transient use, and Landlord shall take 
reasonable steps to see that these parking spaces are available for such use 
at all times.

     31.4.     Arbitration.  In the event of a dispute arising concerning the 
provisions of this Section 31, either party shall be permitted to submit such 
dispute to arbitration under the provisions of Section 32 hereof.

32.  ARBITRATION.

     32.1.     If arbitration is agreed upon hereunder as a dispute 
resolution procedure, the arbitration shall be conducted as provided in this 
Section.  All proceedings shall be conducted according to the Commercial 
Arbitration Rules of the American Arbitration Association, except as 
hereinafter provided.  No action at law or in equity in connection with any 
such dispute shall be brought until arbitration hereunder shall have been 
waived, either expressly or pursuant to this Section.  The judgment upon the 
award rendered in any arbitration hereunder shall be final and binding on 
both parties hereto and may be entered in any court having jurisdiction 
thereof.

     32.2.     During an arbitration proceeding pursuant to this Section, the 
parties shall continue to perform and discharge all of their respective 
obligations under this Lease, except as otherwise provided in this Lease.

     32.3.     All disputes that may be arbitrated in accordance with this 
Lease shall be raised by notice to the other party, which notice shall state 
with particularity the nature of the dispute and the demand for relief, 
making specific reference by section number and title of the provisions of 
this Lease alleged to have given rise to the dispute.  The notice shall also 
refer to this Section and shall state whether or not the party giving the 
notice demands arbitration under this Section.  If no such demand is 
contained in the notice, the other party against whom

                                          33
<PAGE>

relief is sought shall have the right to demand arbitration under this 
Section within five (5) business days after such notice is received.  Unless 
one of the parties demands arbitration, the provisions of this Section shall 
be deemed to have been waived with respect to the dispute in question.

     32.4.     Tenant and Landlord shall mutually and promptly select one 
person who has demonstrated at least ten year's experience in commercial real 
estate matters and, in particular, the subject matter of the dispute, to act 
as arbitrator hereunder.  If a selection is not made within thirty (30) days 
after a demand for arbitration is made, upon the request of either party the 
arbitrator shall be appointed by  The American Arbitration Association.  The 
arbitration proceedings shall take place at a mutually acceptable location in 
New Jersey.

     32.5.     When resolving any dispute, the arbitrator shall apply the 
pertinent provisions of this Lease without departure therefrom in any 
respect. The arbitrator shall not have the power to change any of the 
provisions of this Lease, but this Section shall not prevent in any 
appropriate case the interpretation, construction and determination by the 
arbitrator of the applicable provisions of this Lease to the extent necessary 
in applying the same to the matters to be determined by arbitration.  The 
arbitrator shall limit his deliberations to the following issues only and no 
others:

               (i)  resolution of those disputes expressly agreed in this Lease
                    to be subject to submission to arbitration, and

               (ii) whether an item included in Landlord Statement as Operating
                    Expenses or Real Estate Taxes is properly includable
                    pursuant to Exhibit "C".

33.  ADDITIONAL RIGHTS OF TENANT.

     33.1.     Tenant shall be permitted to install and maintain a generator 
on the existing pad on Lot 2 of the Project, in the location depicted on 
Exhibit "K".  Tenant shall repair any damage to the pad site occasioned 
thereby.  Tenant shall also have exclusive use of an existing fuel tank, 
located in the location on Lot 2 depicted on Exhibit "K".  Landlord shall on 
the Commencement Date deliver possession of  the fuel tank to Tenant empty 
and in a condition in compliance with all applicable Laws.  Tenant shall, 
from and after the Commencement Date, maintain the fuel tank and keep it in 
good repair and condition.

     33.2.     Tenant will have the exclusive right to use of all equipment 
located in the UPS Building, and shall maintain and repair the same.  At the 
termination of this Lease, the equipment shall be surrendered to Landlord in 
as good repair and condition as at the commencement of this Lease, reasonable 
wear and tear and casualty excepted.

                                          34

<PAGE>

     33.3.     Tenant may install a generator plug on the outside wall of the 
Building at a location adjacent to the loading dock area to accommodate a 
mobile generator.

     33.4.     Tenant shall be permitted to install four (4) 6" conduits from 
the street to the Buildings.

     33.5.     Tenant shall have the right to contact other tenants within 
the Project regarding sales of Tenant's telecommunication services.

     33.6.     Landlord grants to Tenant the license and right during the 
term of this Lease (i) to utilize space and conduits which exist on the 
Property and in the Buildings during the term of this Lease for the purpose 
of using existing risers and conduit and/or installing conduit (in the event 
existing conduit space is insufficient), (ii) to install cable in, across and 
through such risers and conduit, and (iii) to make connections to all 
electrical and mechanical closets as necessary for the use of such cable for 
the purposes of connection of Tenant's equipment and facilities within the 
Building to Tenant's telecommunication system network outside the Building 
and connection of Tenant's equipment and facilities in the Leased Premises to 
other tenant premises.  The location of such risers and conduit shall be 
designated by Landlord in its reasonable discretion and shall not interfere 
with the use of the Buildings by other tenants.  The method of installation 
of conduit or cable shall be subject to the prior approval of Landlord, which 
approval shall not be unreasonably withheld or delayed.  Tenant shall be 
responsible for maintaining any conduit and cable which is used solely by 
Tenant at its cost.

     33.7.     Tenant shall have the right to install satellite antennae (the 
"Antennae") on the roof of Building 2 in a location approved by Landlord. 
Tenant shall not affix or install said Antennae or its wiring, supports and 
appurtenances so as to cause any penetration of the roof or cause any damage 
thereto which would invalidate the warranty on the roof.  Tenant will be 
solely responsible for all necessary permits and licenses to install and 
operate the Antennae.  Tenant will remove the Antennae at the termination of 
this Lease and repair any damage to the Building caused by its installation 
or removal.  

     33.8.     Tenant shall have the right to install a communication tower 
(such as a microwave facility) (the "Tower"), for its own use and use by its 
customers only, on the Project at a location approved by Landlord not to be 
unreasonably withheld or delayed.  Tenant will be solely responsible for all 
necessary permits and licenses to construct and operate the Tower.  Tenant 
will remove the Tower at the termination of this Lease. 

     33.9.     Prior to exercising any rights under Sections 33.1 through 
33.8, Tenant shall provide Landlord with plans and specifications detailing 
Tenant's plans, which plans and specifications shall be subject to Landlord's 
approval, which approval shall not be unreasonably withheld or delayed, 
provided, however, that such approval may be subject to reasonable conditions 
including, without limitation, that Tenant be required to pay for any out-

                                          35
<PAGE>

of-pocket cost to Landlord occasioned thereby.  Tenant shall bear all costs 
incurred in the exercise of its rights set forth above shall exercise these 
rights in full compliance with all applicable governmental laws, regulations 
and rules (including without limitation the obtaining of all required 
permits) or any other requirements reasonably imposed by Landlord.  Tenant 
shall not, in the exercise of its rights under this Section, interfere with 
Landlord, other tenants at the Project and the operations of the Building or 
Project.  Tenant shall take all precautionary steps to protect its facilities 
and the facilities of other affected by performance of work and shall police 
same properly.  Tenant will replace or restore any disturbance or damage it 
caused to the Building or other improvements at the Project.  Any alteration, 
additions or improvements constructed by Tenant in the course of exercising 
its rights under Sections 33.1 through 33.8 shall be deemed to be Tenant 
Improvements.

34.  BUILDING 2 SECURITY.  Tenant agrees that it shall, as part of the Tenant 
Work, install a security system in Building 2 providing for card key access.  
At such time as any tenant other than Tenant shall lease any portion of 
Building 2, Tenant shall, at its sole cost and expense, modify the security 
system (if necessary) so as to provide separately controlled access into the 
Building for such other tenant.

                                           36
<PAGE>

35.  RESTRICTIONS ON OTHER TENANTS IN THE BUILDINGS.

     35.1.     In order to protect Tenant's trade secrets and confidential 
information and enhance security in the Demised Premises,  Landlord shall not 
(i) lease any space in the Buildings to, or (ii) consent to any lease, 
sublease or assignment of lease or sublease of any space in the Buildings to, 
or (iii) assign this Lease to, any person or entity which, as a major part of 
its business, (1) leases or sells or otherwise trades in telecommunications 
products or services of the kind sold by Tenant, or (2) provides consulting 
services or advice in the use or application of such products or services.

     35.2.     Landlord shall include the foregoing prohibition in all leases 
which are executed after the date hereof and cover space in the Buildings, 
and shall, in such leases, require the tenant thereunder to include the same 
in all subleases and assignments executed after the date hereof.

     35.3.     Landlord shall consult with Tenant before (i) leasing space in 
the Buildings to any tenant, (ii) approving any subtenant or assignee of any 
tenant in the Buildings, or (iii) making any other commitment which may 
violate this Section.

36.  MISCELLANEOUS.

     36.1.     The obligations of this Lease shall be binding upon and inure 
to the benefit of the parties hereto and their respective successors and 
assigns; provided that Landlord and each successive owner of the Buildings 
and/or the Land shall be liable only for obligations accruing during the 
period of its ownership or interest in the Buildings, and from and after the 
transfer by Landlord or such successive owner of its ownership or other 
interest in the Buildings, Tenant shall look solely to the successors in 
title for the performance of Landlord's obligations hereunder arising 
thereafter.

     36.2.     No delay or forbearance by Landlord in exercising any right or 
remedy hereunder or in undertaking or performing any act or matter which is 
not expressly required to be undertaken by Landlord shall be construed, 
respectively, to be a waiver of Landlord's rights or to represent any 
agreement by Landlord to undertake or perform such act or matter thereafter.

     36.3.     TENANT HEREBY CONSENTS TO THE EXCLUSIVE JURISDICTION OF THE 
COURTS OF THE STATE WHERE THE DEMISED PREMISES ARE LOCATED AND IN ANY AND ALL 
ACTIONS OR PROCEEDINGS ARISING HEREUNDER OR PURSUANT HERETO.  LANDLORD AND 
TENANT AGREE TO WAIVE TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM 
BROUGHT BY EITHER OF THE PARTIES HERETO AGAINST THE OTHER ON ANY MATTER 
WHATSOEVER ARISING OUT OF OR IN ANY WAY CONNECTED WITH THIS LEASE, THE


                                          37

<PAGE>

RELATIONSHIP OF LANDLORD AND TENANT AND/OR TENANT'S USE OF OR OCCUPANCY OF 
THE DEMISED PREMISES.  IT IS FURTHER MUTUALLY AGREED THAT IN THE EVENT 
LANDLORD COMMENCES ANY SUMMARY PROCEEDING FOR NON-PAYMENT OF RENT, TENANT 
WILL NOT INTERPOSE ANY COUNTERCLAIM OF WHATEVER NATURE OR DESCRIPTION IN ANY 
SUCH PROCEEDING, UNLESS TENANT CANNOT BRING SEPARATE ACTION.

     36.4.     Tenant shall look solely to the Buildings and rents derived 
therefrom for enforcement of any obligation hereunder or by law assumed or 
enforceable against Landlord, and no other property or other assets of 
Landlord shall be subjected to levy, execution or other enforcement 
proceeding for the satisfaction of Tenant's remedies or with respect to this 
Lease, the relationship of landlord and tenant hereunder or Tenant's use and 
occupancy of the Demised Premises.

     36.5.     All times, wherever specified herein for the performance by 
Landlord or Tenant of their respective obligations hereunder, are of the 
essence of this Lease.

     36.6.     Each covenant and agreement in this Lease shall for all 
purposes be construed to be a separate and independent covenant or agreement. 
 If any provision in this Lease or the application thereof shall to any 
extent be invalid, illegal or otherwise unenforceable, the remainder of this 
Lease, and the application of such provision other than as invalid, illegal 
or unenforceable, shall not be affected thereby; and such provisions in this 
Lease shall be valid and enforceable to the fullest extent permitted by law.

     36.7.     This Lease, including all Exhibits hereto, each of which is 
incorporated in this Lease, contains the entire agreement between the parties 
hereto, and shall not be amended, modified or supplemented unless by 
agreement in writing signed by both Landlord and Tenant, except as 
specifically provided for herein.

     36.8.     The title and headings and table of contents of this Lease are 
for convenience of reference only and shall not in any way be utilized to 
construe or interpret the agreement of the parties as otherwise set forth 
herein.  The term "Landlord" and term "Tenant" as used herein shall mean, 
where appropriate, all persons acting by or on behalf of the respective 
parties, except as to any required approvals, consents or amendments, 
modifications or supplements hereunder when such terms shall only mean the 
parties originally named on the first page of this Lease as Landlord and 
Tenant, respectively, and their agents so authorized in writing.

     36.9.     If Tenant is a corporation or a limited liability company, 
each person signing this Lease on behalf of Tenant represents and warrants 
that he/she has full authority to do so and that this Lease is fully and 
completely binding on the corporation or limited liability company.  If at 
any time during the Lease Term hereunder, or any extension or renewal


                                          38

<PAGE>

thereof, Tenant shall change its corporate or company name, by operation of 
law or otherwise, Tenant shall deliver to Landlord a copy of a certificate of 
name change filed with the state of Tenant's jurisdiction evidencing such 
name change, or such other evidence of Tenant's name change and authority as 
is reasonably acceptable to Landlord.  Such evidence shall be delivered to 
Landlord within sixty (60) days after Tenant's official name change.  If 
Tenant is a general partnership, limited partnership or limited liability 
partnership, each person or entity signing this Lease for Tenant represents 
that he/she or it has full authority to sign for the partnership and that 
this Lease is completely and fully binding on the partnership and all general 
partners of the partnership. Tenant shall give written notice to Landlord of 
any general partner's withdrawal or addition and, in the event of a name 
change of the partnership, the same conditions regarding a name change of a 
corporate or limited liability company Tenant, as stated above, shall apply.

     36.10.    This Lease shall be governed by and construed in accordance 
with the laws of the State of New Jersey.

     36.11.    Within ten (10) days after receipt, Landlord and Tenant shall 
advise the other party in writing, and provide the other with copies of (as 
applicable), any notices alleging violation of the Americans with 
Disabilities Act of 1990 ("ADA") relating to any portion of the Demised 
Premises; any claims made or threatened in writing regarding noncompliance 
with the ADA and relating to any portion of the Demised Premises; or any 
governmental or regulatory actions or investigations instituted or threatened 
regarding noncompliance with the ADA and relating to any portion of the 
Demised Premises.

     36.12.    If Tenant is comprised of more than one signatory, each 
signatory shall be jointly and severally liable with each other signatory for 
payment and performance according to this Lease.

     36.13.    Any covenants set forth in this Lease which, by their nature, 
would reasonably be expected to be performed after the expiration or earlier 
termination of this Lease, shall survive the expiration or earlier 
termination of this Lease.

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement of 
Lease to be executed on the day and year first above written.

                                   LANDLORD:

                                   SOUTH BRUNSWICK INVESTORS, 
                                   L.P., a Delaware limited partnership

                                             By:  South Brunswick Investment
                                             Company, L.L.C.


                                          39

<PAGE>

                                        
By:________________________________________________
                                               Name:
_______________________________________
                                               Title:
_______________________________________


                                   TENANT:

                                   TELEPORT COMMUNICATIONS GROUP INC.



   By:__________________________________________________
                                          Name:
________________________________________________
                                          Title:
________________________________________________


                                          40

<PAGE>
 

                                     EXHIBIT "A"

                      PLAN OF DEMISED PREMISES AND OPTION AREAS



<PAGE>
 

                                     EXHIBIT "B"

                                    RENT SCHEDULE



<PAGE>

                                     EXHIBIT "C"

                 TAXES, OPERATING EXPENSE AND OTHER ADDITIONAL RENT

     1.   TAXES.

          A.   DEFINITIONS

               I.   "ADJUSTED TAXES" shall mean the Taxes for any Tax Year, plus
                    the expenses of any contests (administrative or otherwise)
                    of tax assessments or proceedings for refunds incurred
                    during such Tax Year.  If Landlord is successful in
                    obtaining a refund for any Tax Year(s), the Adjusted Taxes
                    for the Tax Year(s) to which such refund is applicable shall
                    be recalculated to reflect the amount of the refund received
                    by Landlord, and Tenant shall receive a credit, if
                    appropriate, equal to the amount of the difference between
                    the Tax Adjustment which was actually paid by Tenant and the
                    Tax Adjustment which actually is due, taking into account
                    the amount of the refund.

               II.  "TAX ADJUSTMENT" shall have the meaning set forth in
                    Subsection 1B below.  

               III. "TAX ALLOWANCE" shall mean the actual Taxes for Tax Year
                    1996.

               IV.  "TAX ESTIMATE" shall have the meaning set forth in
                    Subsection 1B below.

               V.   "TAX STATEMENT" shall mean a statement in writing signed by
                    Landlord, setting forth (a) the Adjusted Taxes for the
                    applicable Tax Year, (b) the Tax Allowance, (c) the Tax
                    Adjustment payable for such Tax Year, or portion thereof,
                    and (d) such other information as Landlord deems
                    appropriate.

               VI.  "TAX YEAR" shall mean each calendar year, or such other
                    period of twelve (12) months as hereafter may be duly
                    adopted by the applicable governmental or quasi-governmental
                    body or authority or special service district as its fiscal
                    year for purposes of Taxes, occurring during the Lease Term.

               VII. "TAXES" shall mean all taxes, charges, impositions, levies,
                    assessments and burdens of every kind and nature, whether
                    general or special, ordinary or extraordinary, foreseen or
                    unforeseen, assessed or imposed 


                                         C-1

<PAGE>

                    by any governmental or quasi-governmental body or authority
                    or special service district on and/or with respect to the
                    Land or the Buildings or their operation or the rents
                    therefrom (including taxes based on gross receipts), whether
                    or not directly paid by Landlord, subject to the following:

                    (1)  there shall be excluded from Taxes all income taxes,
                         excess profit taxes, excise taxes, franchise taxes,
                         estate, succession, inheritance and transfer taxes;
                         provided, however, that if, due to a future change in
                         the method of taxation or assessment, any such tax,
                         however designated, shall be imposed in substitution,
                         in whole or in part, for (or in lieu of all or any part
                         of any contemplated increase in) any tax, charge,
                         imposition, levy, assessment or burden which would
                         otherwise be included within the definition of Taxes,
                         such other tax shall be deemed to be included within
                         the definition of Taxes as defined herein to the extent
                         of such substitution or imposition in lieu; and 

                    (2)  there shall be excluded from Taxes any use and
                         occupancy tax, which shall be paid by Tenant to the
                         appropriate governmental authority; provided, however,
                         that Tenant shall pay such use and occupancy tax to
                         Landlord as Additional Rent upon demand if Landlord is
                         required by law to collect such tax for any
                         governmental authority, in which case Landlord shall
                         remit any amounts paid to Landlord to the appropriate
                         governmental authority.

             VIII.  "TENANT'S PROPORTIONATE SHARE" shall mean a fraction, 
                    the numerator of which shall be the rentable square feet
                    of the Demised Premises, and the denominator of which shall
                    be the aggregate rentable square feet in the Buildings, and,
                    expressed as a percentage, shall be 61.49% (87,550/142,385).
                    If the rentable square feet of the Demised Premises 
                    increases or decreases during any Operating Year or Tax
                    Year, the rentable square feet of the Demised Premises for
                    purposes of determining the numerator of the fraction shall
                    be the weighted average of the rentable square feet in the
                    Demised Premises for such Operating Year or Tax Year.

          B.        PAYMENT OF TAX ADJUSTMENT.  If the Adjusted Taxes for any
                    Tax Year shall be in excess of the Tax Allowance, Tenant
                    shall pay to Landlord as Additional Rent an amount equal to
                    Tenant's Proportionate Share of such excess.  (The amount of
                    Tenant's Proportionate Share of such excess is hereinafter
                    referred to 


                                         C-2

<PAGE>

                    as the "Tax Adjustment".)  If the Commencement Date is any
                    date other than the first day of a Tax Year or if the
                    expiration date of the Lease Term is any date other than the
                    last day of a Tax Year, the Tax Adjustment shall be
                    allocated proportionately to the amount of time in such Tax
                    Year that the Lease Term is in effect.

                    Tenant shall pay to Landlord, on account of the Tax
                    Adjustment for each Tax Year, monthly installments in
                    advance equal to one-twelfth (1/12) of the estimated Tax
                    Adjustment for such Tax Year  (the "Tax Estimate").  Such
                    installments shall be payable at such place as Landlord may
                    direct.  From time to time during any Tax Year, Landlord may
                    furnish to Tenant the Tax Estimate for such Tax Year and, on
                    the first day of the first month following the receipt of
                    such Tax Estimate, in addition to the monthly installment of
                    such new Tax Estimate, Tenant shall pay to Landlord (or
                    Landlord shall credit to Tenant) any deficiency (or excess)
                    between (i) the total of the installments paid on account of
                    the Tax Adjustment for such Tax Year, and (ii) the product
                    of one-twelfth (1/12) of such Tax Estimate for such Tax Year
                    and the number of months which have elapsed during such Tax
                    Year prior to the due date of such payment.  Until the Tax
                    Estimate for any Tax Year is furnished by Landlord, Tenant
                    shall continue to pay monthly installments on account of
                    such Tax Year's Tax Adjustment based upon the last Tax
                    Estimate provided by Landlord to Tenant.  Following the end
                    of each Tax Year, Landlord shall furnish to Tenant a Tax
                    Statement.  On the first day of the first month following
                    the receipt of such Tax Statement, Tenant shall pay to
                    Landlord (or Landlord shall credit or refund to Tenant) any
                    deficiency (or excess) between the installments paid on
                    account of the preceding Tax Year's Tax Adjustment and the
                    actual Tax Adjustment for such Tax Year.

                    Notwithstanding the foregoing, Landlord from time to time
                    during the Term may elect to waive the requirement for
                    payment of monthly installments on account of the Tax
                    Adjustment and, in such case, Tenant shall pay the full
                    amount of any unpaid Tax Adjustment within fifteen (15) days
                    after Tenant receives any Tax Statement.  Furthermore,
                    notwithstanding the foregoing, more than one (1) Tax
                    Statement may be sent to Tenant during any Tax Year.  Such
                    election by Landlord shall not preclude Landlord from
                    thereafter requiring Tenant to commence paying monthly
                    installments on account of the Tax Adjustment as set forth
                    above.

               C.   TAX CONTEST.

                    In consideration of Tenant's undertaking to reimburse 
                    Landlord for Tenant's Share of an increase in Real Estate
                    Taxes, Tenant shall have the right, by 


                                       C-3

<PAGE>

                    appropriate proceedings, to protest any assessment or 
                    reassessment or any special assessment, or any change in 
                    the tax rate, or the validity of any of the above.  
                    During the pendency of any protest, Landlord shall be 
                    permitted to continue to pay any disputed taxes and 
                    Tenant shall continue to reimburse Landlord in 
                    accordance with the provisions of Section 1(B) above.

                    Landlord shall notify Tenant in writing of all 
                    assessments and the tax rates and any proposed changes to
                    them.  Tenant shall notify Landlord in writing within 
                    fifteen (15) business days after receipt of Landlord's 
                    notice if Tenant wants to file a protest.  If Landlord 
                    receives written notice of a change in assessment and 
                    fails to give notice to Tenant of such change and, as a 
                    result, Tenant is unable to review the change, and if it 
                    so desires, to files a protest, Tenant shall not be 
                    obligated to reimburse Landlord for any increase in Real 
                    Estate Taxes resulting therefrom.

                    In the tax proceedings, Tenant may act in its own name 
                    and/or the name of Landlord and Landlord will, at 
                    Tenant's request and provided Landlord is not put to any 
                    expense thereby, cooperate with Tenant in any way Tenant 
                    may reasonably require in connection with such protest.  
                    Any protest conducted by Tenant hereunder shall be at 
                    Tenant's expense and if interest or late charges become 
                    payable with respect to the Real Estate Taxes as a 
                    result, Tenant shall reimburse Landlord for the same.  
                    However, Landlord shall be solely responsible for any 
                    penalties, interest or late charges imposed on Landlord 
                    through no fault of Tenant.  

                    Tenant shall be responsible for posting any security 
                    and/or paying any fees required in connection with any 
                    protest initiated by Tenant.

                    Landlord agrees to keep Tenant apprised of all tax 
                    protest filings and proceedings undertaken by Landlord or 
                    others to obtain a tax reduction or refund.  Landlord may 
                    deduct from the total refund any reasonable attorneys' 
                    fees and other reasonable expenses incurred by Landlord 
                    therefor.  However, if the refund or reduction resulted 
                    from Tenant's efforts, Landlord shall also reimburse 
                    Tenant for reasonable attorneys' fees and any other 
                    reasonably expenses incurred by Tenant in connection with 
                    the protest, such reimbursement not to exceed Tenant's 
                    Proportionate Share of the refund or reduction.

 
                                         C-4
                                           
<PAGE>

2.   OPERATING EXPENSE.

     A.   DEFINITIONS. 

               I.   "ESSENTIAL CAPITAL IMPROVEMENT" shall mean (a) a labor
                    saving device, energy saving device or other installation,
                    improvement or replacement which is intended to reduce
                    Operating Expense, whether or not voluntary or required by
                    governmental mandate, or (b) an installation or improvement
                    required by reason of any law, ordinance or regulation which
                    was not applicable to the Buildings on the date of the
                    execution of this Lease, or (c) an installation or
                    improvement intended to improve the health or safety of
                    tenants in the Buildings generally, whether or not voluntary
                    or required by governmental mandate.

               II.  "OPERATING EXPENSE" shall mean all costs and expenses of
                    whatever kind or nature paid or incurred by Landlord from
                    time to time in connection with the ownership, management,
                    maintenance, operation, replacement, restoration and repair
                    of the Buildings and the Land, all computed on the accrual
                    basis, including, without limitation, the following items:

                    (a)  gas, oil, electricity, steam, fuel, water, sewer and
                         other utility charges (including surcharges) of
                         whatever nature (excepting electricity charges for
                         usage by tenants for which any such tenant is billed
                         separately), including, without limitation, the
                         proportion of costs (including but not limited to oil,
                         gas and electricity, repairs and personnel) of the
                         central heating and air conditioning plant located on
                         Lot 2 allocable to the provision of services to the
                         Buildings;

                    (b)  insurance premiums and the amounts of any deductibles
                         paid by Landlord;

                    (c)  on-site building personnel costs, including, but not
                         limited to, salaries, wages, fringe benefits, taxes,
                         insurance and other direct and indirect costs;

                    (d)  costs of service and maintenance contracts including,
                         but not limited to, standard trash removal, cleaning
                         and security services;
                                           

                                         C-5

<PAGE>

                    (e)  Landlord's share, as owner of Lot 1, of costs relating
                         to maintenance and operation of the Project which are
                         shared and allocated among owners of lots comprising
                         the Project;

                    (f)  all other maintenance, preventive maintenance,
                         painting, repair, restoration and replacement expenses
                         (including, but not limited to, all of Landlord's
                         repairs in Section 8), and the cost of materials,
                         supplies and uniforms;

                    (g)  the cost of an on-site office and segregated storage
                         area for Landlord's parts, tools, supplies;

                    (h)  all professional fees incurred in connection with the
                         operation of the Buildings;

                    (i)  management fees payable to the managing agent, provided
                         that such management fees shall not exceed 2% of annual
                         fixed and additional rent payable by all tenants of the
                         Buildings;

                    (j)  sales and use taxes and any taxes imposed on personal
                         property owned by Landlord and used in connection with
                         the Buildings and taxes on any of the expenses which
                         are included in Operating Expense; 

                    (k)  decorations for the lobby and other public portions of
                         the Buildings;

                    (l)  all costs and expenses of maintaining (including snow
                         removal), repairing and replacing paving, curbs,
                         walkways, driveways, roadways and landscaping; and

                    (m)  the annual amortization of any Essential Capital
                         Improvement made by Landlord, computed based on the
                         useful life of the improvement with interest at the
                         prime rate referenced in Section 3 of the Lease
                         determined as of the date of completion of such
                         Essential Capital Improvement.  If Landlord shall lease
                         such Essential Capital Improvement, then the rentals or
                         other operating costs paid pursuant to such lease shall
                         be included in Operating Expense for each Operating
                         Year in which they are incurred.


                                         C-6

<PAGE>

                    Notwithstanding the foregoing, Operating Expense shall not
                    include the following:  

                    (i)    costs to prepare space for occupancy by a new tenant;

                    (ii)   costs of capital improvements (except for costs of 
                           any Essential Capital Improvement); 

                    (iii)  advertising expenses and leasing commissions; 

                    (iv)   any cost or expenditure for which Landlord is
                           reimbursed, whether by insurance proceeds or 
                           otherwise, but not including costs and expenditures
                           for which Landlord is reimbursed by tenants of the 
                           Buildings pursuant to operating expense reimbursement
                           provisions; 

                    (v)    legal expenses of negotiating and enforcing leases;

                    (vi)   special cleaning or other services not offered to all
                           tenants of the Buildings; 

                    (vii)  any charge for depreciation, interest or rental
                           (except as set forth above with respect to any
                           Essential Capital Improvement); 

                    (viii) the cost of removal of asbestos-containing material 
                           not related to the repair, maintenance or restoration
                           of equipment, as referred to in Section 8; 

                    (ix)   salaries of Landlord's officers and partners and its
                           headquarters staff; 

                    (x)    the cost of any repair made in accordance with 
                           Sections 11 or 12 of this Lease, except to the extent
                           such cost is not reimbursed by insurance; 

                    (xi)   any costs representing an amount paid to an 
                           affiliated person of Landlord which is in excess of
                           the amount which would have been paid in the absence
                           of such relationship; and

                    (xii)  any expenses of repairs or maintenance which are
                           covered by warranties, guarantees or service
                           contracts (excluding any mandatory deductibles).


                                         C-7

<PAGE>

                           In determining Operating Expense for any Operating 
                           Year, if the Buildings were less than fully 
                           occupied during such entire year, or were not in 
                           operation during such entire year, then Operating 
                           Expense shall be adjusted by Landlord to reflect 
                           the amount that such expenses would normally be 
                           expected to have been, in the reasonable opinion 
                           of Landlord, had the Buildings been fully occupied 
                           and operational throughout such year, except that 
                           in no event shall such adjustment result in the 
                           recovery by Landlord of an amount in excess of the 
                           actual Operating Expense.  In addition, if 
                           Landlord is not furnishing any particular work or 
                           service (the cost of which, if performed by 
                           Landlord, would constitute an Operating Expense) 
                           to a tenant who has undertaken to perform such 
                           work or service in lieu of performance by 
                           Landlord, Operating Expense shall nevertheless be 
                           deemed to include the amount Landlord would 
                           reasonably have incurred if Landlord had in fact 
                           performed the work or service at its expense.

                      III. "OPERATING EXPENSE ADJUSTMENT" shall have the 
                           meaning set forth in Subsection 2B below.  

                       IV. "OPERATING EXPENSE ALLOWANCE" shall mean the 
                           actual Operating Expense for Operating Year 1996, 
                           adjusted as set forth above.

                        V. "OPERATING EXPENSE ESTIMATE" shall have the 
                           meaning set forth in Subsection 2B below.

                       VI. "OPERATING EXPENSE STATEMENT" shall mean a 
                           statement in writing signed by Landlord, setting 
                           forth in reasonable detail (a) the Operating 
                           Expense for the applicable Operating Year, (b) the 
                           Operating Expense Allowance, (c) the Operating 
                           Expense Adjustment for such Operating Year, or 
                           portion thereof, and (d) such other information as 
                           Landlord deems appropriate.
 
                      VII. "OPERATING YEAR" shall mean each calendar year, or 
                           such other period of twelve (12) months as 
                           hereafter may be adopted by Landlord as its fiscal 
                           year for purposes of Operating Expense, occurring 
                           during the Lease Term.

          B.        PAYMENT OF OPERATING EXPENSE ADJUSTMENT.  If the Operating
                    Expense for any Operating Year shall be in excess of the
                    Operating Expense Allowance, Tenant shall pay to Landlord as
                    Additional Rent an amount equal to Tenant's Proportionate
                    Share (as defined in Subsection 1A of this Exhibit) of such
                    excess. 


                                         C-8

<PAGE>

                    (The amount of Tenant's Proportionate Share of such excess
                    is hereinafter referred to as the "Operating Expense
                    Adjustment".)  If the Commencement Date is any date other
                    than the first day of an Operating Year or if the expiration
                    date of the Lease Term is any date other than the last day
                    of an Operating Year, the Operating Expense Adjustment shall
                    be allocated proportionately to the amount of time in such
                    Operating Year that the Lease Term is in effect.  

                    Tenant shall pay to Landlord, on account of the Operating
                    Expense Adjustment for each Operating Year, monthly
                    installments in advance equal to one-twelfth (1/12) of the
                    estimated Operating Expense Adjustment for such Operating
                    Year  (the "Operating Expense Estimate").  Such installments
                    shall be payable at such place as Landlord may direct.  From
                    time to time during any Operating Year, Landlord may furnish
                    to Tenant the Operating Expense Estimate for such Operating
                    Year and, on the first day of the first month following
                    receipt of such Operating Expense Estimate, in addition to
                    the monthly installment of such new Operating Expense
                    Estimate, Tenant shall pay to Landlord (or Landlord shall
                    credit to Tenant) any deficiency (or excess) between (i) the
                    total of the installments paid on account of the Operating
                    Expense Adjustment for such Operating Year, and (ii) the
                    product of one-twelfth (1/12) of such Operating Expense
                    Estimate for such Operating Year and the number of months
                    which have elapsed during such Operating Year prior to the
                    due date of such payment.  Until the Operating Expense
                    Estimate for any Operating Year is furnished by Landlord,
                    Tenant shall continue to pay monthly installments on account
                    of such Operating Year's Operating Expense Adjustment based
                    upon the last Operating Expense Estimate provided by
                    Landlord to Tenant.  Following the end of each Operating
                    Year, Landlord shall furnish to Tenant an Operating Expense
                    Statement.  On the first day of the first month following
                    the receipt of such Operating Expense Statement, Tenant
                    shall pay to Landlord (or Landlord shall credit or refund to
                    Tenant) any deficiency (or excess) between the installments
                    paid on account of the preceding Operating Year's Operating
                    Expense Adjustment and the actual Operating Expense
                    Adjustment for such Operating Year.

                    Tenant shall have the right, during regular business hours,
                    to inspect the books and records used by Landlord in
                    calculating the Operating Expense Adjustment for a
                    particular Operating Year, upon not less than thirty (30)
                    days prior notice given any time within two (2) years
                    following Tenant's receipt of the Operating Expense
                    Statement for such year; provided, however, that Tenant
                    shall make all payments required hereunder without delay. 
                    Unless Tenant shall take written exception to any Operating
                    Expense Statement within sixty (60) days after the end of
                    such two (2) year period (such date, the "Exception Date"),
                    such statement shall be final and binding upon Tenant. 
                    Tenant's inspection of 


                                         C-9

<PAGE>

                    Landlord's books and records shall be performed by an
                    employee or employees of Tenant or by a reputable public
                    accounting firm or real estate company.  Tenant agrees that
                    all information obtained by Tenant or by those performing
                    such inspection on behalf of Tenant shall at all times
                    remain confidential, and Tenant further agrees to take such
                    action as is necessary to insure the continued
                    confidentiality of all such information.

                    Landlord shall be permitted to adjust the Operating Expense
                    Adjustment for a particular Operating Year any time up to
                    the Exception Date relating to such Operating Year. 
                    Thereafter, such Operating Expense Statement shall be final
                    and binding upon Landlord. 

     3.   PERSONAL PROPERTY TAXES.  Tenant shall be responsible for all ad
          valorem taxes on its personal property and on the value of the
          leasehold improvements in the Demised Premises to the extent that the
          same exceed building standard allowances (and if the taxing
          authorities do not separately assess Tenant's leasehold improvements,
          Landlord may make a reasonable allocation of imposition to such
          improvements). 

     4.   SURVIVAL.  If, upon expiration or termination of this Lease for any
          cause, the amount of any Additional Rent due under this Lease has not
          yet been determined, an appropriate payment from Tenant to Landlord,
          or refund from Landlord to Tenant, shall be made promptly after such
          determination, and such obligation shall survive the expiration or
          termination of this Lease.


                                        C-10

<PAGE>
 



                                    EXHIBIT "D"

                                          
                            SCHEDULE OF LANDLORD'S WORK


At no cost to Tenant, Landlord will provide the following items:

     ORIGINAL LEASE:

          GENERAL:

                    1.   Provide access and other characteristics specified in
                         the Americans with Disabilities Act to main lobby,
                         restrooms, elevators and other applicable core areas.

          Exterior:

                    1.   Repair and repaint damaged paint areas on facade of
                         Buildings.
                    2.   Relandscape Building entry areas, computer room dock 
                         and Building Parking Area islands.
                    3.   Design and install Project identification sign at main 
                         park entrance from Ridge Road.
                    4.   Install concrete walkway over existing mechanical pit
                         at east lobby entrance.

          ELEVATORS:*

                    1.   Install new 3,500 lb. passenger elevator at 90 degrees
                         to existing elevator, a matching new cab in existing
                         elevator, and improved controls for the pair.  Cabs to
                         be manufacturer's standard with plastic laminate wall
                         panels and carpeted floor.
                    2.   Install new 4,500 lb. freight elevator adjacent to
                         south stair tower and main truck dock.

          LOBBY:

                    1.   Install new anodized aluminum entrance doors.
                    2.   Improve layout and finishes, including terrazzo floors,
                         vinyl wall covered walls, and lay-in acoustical tile
                         and drywall ceiling.
                    3.   Improve incandescent lighting and HVAC accordingly.

          Restrooms:

<PAGE>

               1.   Install a pair of new restrooms in core of Floors 1 and 2 to
                    meet standard office code requirements.  Finishes to be
                    ceramic tile floor and base, painted drywall walls, lay-in
                    acoustical ceiling, fluorescent lighting, and plastic
                    laminate vanity counters.

     OPTION 1

          None

     OPTION 2 (If on 3rd Floor)

               1.   Install a pair of new restrooms in core of 3rd Floor to meet
                    standard office code requirements.  Finishes to be ceramic
                    title floor and base, painted drywall walls, lay-in
                    acoustical ceiling, fluorescent lighting, and plastic
                    laminate vanity counters.

*  Tenant acknowledges that the two new elevators may not be completed by the 
Commencement Date and agrees to accept possession of the Demised Premises 
with elevator service initially to be provided by the existing elevator (with 
improved temporary finishes).  Landlord shall diligently pursue completion of 
the new elevators and shall complete the new elevators not later than August 
31, 1996, subject to delays attributable to any action or inaction of Tenant, 
or due to casualty or other causes not within Landlord's reasonable control. 


                                        D-2

<PAGE>

                                    EXHIBIT "E"

                             JANITORIAL SPECIFICATIONS

DAILY - Night time coverage Monday through Friday.

     1.   OFFICE AREAS

          a.   Empty all trash containers and waste baskets.
          b.   Replace all trash liners.
          c.   Empty all ashtrays and receptacles and wipe clean with damp
               cloth.
          d.   Dust all uncluttered desktops, file cabinets, counters, sills and
               ledges.
          e.   Vacuum all carpeted traffic lanes.
          f.   Dust mop and spot mop tile floors.
          g.   Vacuum all entrance mats and runners.
          h.   Remove smudges and finger prints from all doors, door frames,
               partitions and switch plates.
          i.   Arrange all furniture neatly.
          j.   Wash and squeegee all entrance door glass, both sides.
          k.   Clean all entrance frames and ledges.
          l.   Highlight all lobbies, elevators, conference room and executive
               areas to maintain superior level of appearance.
          m.   Remove all trash in specifically designated area and dispose of
               in prescribed manner.  (Only service provided to MMC, data center
               and computer room.)
          n.   Clean and polish all drinking fountains.
          o.   Remove finger prints and smudges and dust all sills and ledges.
          p.   Clean all coffee stations.
          q.   Clean chalkboards.
          r.   Provide shared use of day porter.

     2.   Restrooms

          a.   Clean and disinfect all restrooms.
          b.   Empty all waste containers.
          c.   Dry mop floor.
          d.   Fill all dispensers.
          e.   Spray disinfect all fixtures and urinals inside and outside.
          f.   Clean all toilet fixtures and urinals inside and outside.
          g.   Clean all sinks and counter tops.
          h.   Clean and polish all mirrors and brightwork.
          i.   Clean and polish outside of all waste containers.
          j.   Wash floor with disinfectant cleaner making sure all corners are
               cleaned.

<PAGE>

WEEKLY

          a.   Vacuum and spot clean all carpets.
          b.   Wipe desks and telephones.
          c.   Sweep stairwells.

MONTHLY

          a.   Clean all ceramic tile walls.
          b.   Clean all diffusers, registers and Venetian blinds.
          c.   Wash interior glass, both sides.
          d.   Wash stairwell treads and landings.

SEMI-ANNUALLY

          a.   Clean outside of windows.
          b.   Damp wipe diffusers and vents.

ANNUALLY

          a.   Clean inside of windows.
          b.   Shampoo carpeted traffic lanes.
          c.   Strip and refinish resilient floors.
          d.   Clean vertical surfaces.

                                        E-2
 
<PAGE>
 

                                  EXHIBIT "F"


                              RULES AND REGULATIONS

1.   Definitions.  Wherever in these Rules and Regulations the word "Tenant" is
used, it shall be taken to apply to and include Tenant and its agents,
employees, invitees, licensees, subtenants and contractors, and is to be deemed
of such number and gender as the circumstances require.  The word "room" shall
be taken to include the space covered by this Lease.  The word "Landlord" shall
be taken to include the employees and agents of Landlord.

2.   Construction.  The streets, sidewalks, entrances, halls, passages,
elevators, stairways and other common areas provided by Landlord shall not be
obstructed by Tenant, or used by it for any other purpose than for ingress and
egress.

3.   Washrooms.  Toilet rooms, water-closets and other water apparatus shall not
be used for any purposes other than those for which they are constructed.

4.   General Prohibitions.  In order to insure proper use and care of the
Buildings, without Landlord's prior written consent, to be withheld or granted
in Landlord's sole discretion, Tenant shall not:

          a.   Allow any sign, advertisement, notice or other marking to be
affixed to the interior or exterior of the Buildings, other than any signs which
are located within the Demised Premises and are not visible from outside of the
Demised Premises;

          b.   Make improper noises or disturbances of any kind;

          c.   Mark or defile elevators, water-closets, toilet rooms, walls,
windows, doors or any other part of the Buildings;

          d.   Place anything on the outside of the Buildings, including roof
setbacks, window ledges and other projections;

          e.   Use or place any curtains, blinds, drapes or coverings over any
windows or upon the window surfaces which are visible from the outside of the
Demised Premises; 

          f.   Other than in connection with normal office decoration, fasten
any article, drill holes, drive nails or screws into the walls, floors,
woodwork, window mullions, or partitions; nor shall the same be painted, papered
or otherwise covered or in any way marked or broken;

          g.   Interfere with the heating or cooling apparatus;

                                 F-1

<PAGE>

          h.   Allow anyone but Landlord's employees to clean rooms;

          i.   Leave the Demised Premises without locking doors, stopping all
office machines (other than those machines required to be operated at all
times), and extinguishing all lights;

          j.   Install any shades, blinds, or awnings;

          k.   Use any electrical heating device;

          l.   Install call boxes or any kind of wire in or on the Buildings;

          m.   Manufacture any commodity, or prepare to dispense any foods or
beverages, whether by vending or dispensing machines or otherwise (other than as
may be permitted in any kitchenette/vending area(s) located within the Demised
Premises for use by Tenant's employees), or alcoholic beverages, tobacco, drugs,
flowers, or other commodities or articles;

          n.   Secure duplicate keys for rooms, except from Landlord, or change
the locks of any doors to or in the Demised Premises;

          o.   Give its employees or other persons permission to go upon the
roofs of the Buildings; or

          p.   Place door mats in public corridors.

5.   Publicity.  Tenant shall not use the names of the Buildings or South
Brunswick Corporate Center in any way in connection with its business except as
the address thereof.  Landlord also shall have the right to prohibit any
advertising by Tenant which, in Landlord's opinion, tends to impair the
reputation of the Buildings or South Brunswick Corporate Center or their
desirability as buildings or locations for offices; and upon written notice from
Landlord, Tenant shall refrain from or discontinue such advertising.

6.   Business Machines.  Business machines and mechanical equipment which cause
vibration, noise, cold or heat that may be transmitted to the Buildings
structures or to any leased space outside the Demised Premises shall be placed
and maintained by Tenant, at its sole cost and expense, in settings of cork,
rubber or spring type vibration eliminators sufficient to absorb and prevent
such vibration, noise, cold or heat.

                                   F-2

<PAGE>

7.   Movement of Equipment.  Landlord reserves the right to designate the time
when and the method whereby freight, small or large office equipment, furniture,
safes and other like articles may be brought into, moved, or removed from the
Buildings or rooms, and to designate the location for temporary disposition of
such items.  In no event shall any of the foregoing items be taken from Tenant's
space for the purpose of removing same from the Buildings, other than in the
ordinary course of Tenant's business, without the express consent of both
Landlord and Tenant.

8.   Public Entrance.  Landlord reserves the right to exclude the general public
from the Buildings upon such days and at such hours as in Landlord's judgment
will be for the best interest of the Buildings and its tenants.  Persons
entering the Buildings after 6:00 p.m. on business days and at all times on
Saturdays, Sundays and holidays may be required to sign a register maintained
for that purpose.

9.   Rights Reserved to Landlord.  Without abatement or diminution in rent,
Landlord reserves and shall have the following additional rights:

          a.   To change the name and/or street address of the Buildings;

          b.   To install and maintain a sign or signs on the exterior of the
Buildings;

          c.   To approve all sources furnishing sign painting and lettering,
ice, drinking water, towels and toilet supplies, and other like services used on
the Demised Premises;

          d.   To make, either voluntarily or pursuant to governmental
requirement, repairs, alterations or improvements in or to the Buildings or any
part thereof and during alterations, to close entrances, doors, windows,
corridors, elevators or other facilities, provided that such acts (except in
emergencies) shall not unreasonably interfere with Tenant's use and occupancy of
the Demised Premises as a whole;

          e.   If Tenant vacates all or any portion of the Demised Premises
prior to the expiration of the Lease Term, to decorate, remodel, repair, alter
or otherwise prepare all or such portion of the Demised Premises, as applicable,
for re-occupancy;

          f.   To constantly have pass keys to the Demised Premises, which keys
Landlord must secure at all times;

          g.   To grant to anyone the exclusive right to conduct any particular
business or undertaking in the Buildings; and

          h.   To take any and all measures, including inspections, repairs,
alterations, additions and improvements to the Demised Premises or to the
Buildings, as may be necessary or

                                      F-3

<PAGE>

desirable in the operation of the Buildings, provided that such acts (except
in emergencies) shall not unreasonably interfere with Tenant's use and occupancy
of the Demised Premises as a whole.

Subject to the provisions hereof, Landlord may enter upon the Demised Premises
and may exercise any or all of the foregoing rights hereby reserved without
being deemed guilty of an eviction or disturbance of Tenant's use or possession
and without being liable in any manner to Tenant.

10.  Regulation Change.  Landlord shall have the right to make such other and
further reasonable Rules and Regulations, as in the judgment of Landlord, may
from time to time be needful for the appearance, care and cleanliness of the
Buildings, for the preservation of good order therein, and for the health and
safety of the tenants and their visitors, provided that all such Rules and
Regulations shall be enforced by Landlord in a nondiscriminatory fashion. 
Landlord shall not be responsible to Tenant for any violation of Rules and
Regulations by any other tenant, but shall use reasonable efforts to enforce
such compliance with the Rules and Regulations.

10.  Conflict with Lease.  If the terms of this Exhibit shall be in conflict
with the terms set forth in the body of the Lease, the terms set forth in the
body of the Lease shall prevail.




                                     F-4
                                           
<PAGE>
 

                                  EXHIBIT "G"

                                   FORM OF
                 TENANT ESTOPPEL CERTIFICATE AND STATEMENT
                 -----------------------------------------

                        -------------------------
                                (Tenant)

     The undersigned (jointly and severally if more than one) hereby 
represents, warrants and certifies to _______________________ (the 
"Landlord") that it is the tenant and present occupant (the "Tenant") of 
certain premises (the "Demised Premises") comprising a portion of the real 
property and improvements in the buildings (the "Buildings") located at 
___________________________ and that:

1.   Basic Lease Terms - The Demised Premises are more specifically described 
     in, and are leased under the provisions of, a lease agreement (the
     "Lease"), the basic terms of which are described below:

     1.1.  Demised Premises/Suite: _____________; Floor_______
     1.2.  Rentable Square Feet of Demised Premises: _________
     1.3.  Date of Lease: ____________________________________
     1.4.  Commencement Date: _____________________________
     1.5.  Expiration Date: __________________________________
     1.6.  Current Annual/Monthly Fixed Rent: $_____ / $______
     1.7.  Current Monthly Additional Rent: $_________________
     1.8.  Total Monthly Rent As of            : $____________
     1.9.  Tenant's Proportionate Share: ____________________%
     1.10. Security Deposit: $________________________________
     1.11. Total Rent Is Paid Through: _______________________

2.   Modifications.  The Lease contains all of the understandings and
     agreements between Tenant and Landlord, and is in full force and effect, 
     without modification, addition, extension, or renewal on the date hereof, 
     except as indicated below:

     ___________________________________________________________________________

     ___________________________________________________________________________

     __________________________________________________________________________.

                                    G-1

<PAGE>

3.   Acceptance of Demised Premises.  Tenant has accepted possession of the
     Demised Premises and is now in possession of same, and the improvements and
     space required to be furnished according to the Lease have been fully 
     delivered by Landlord and accepted by Tenant.

4.   Options.  There are no purchase options, rights of first refusal, rights 
     of first offer, options to terminate, exclusive business rights, or other
     rights in Tenant to extend or renew the Lease Term or to expand or 
     otherwise modify the Demised Premises, except as indicated below:

     ________________________________________________________________________
     ________________________________________________________________________
     ________________________________________________________________________

5.   Commencement of Rental Obligation.  Tenant's obligation to pay rent has 
     commenced, unless indicated below: _____________________________________
     ________________________________________________________________________.

6.   Rent Payment.  No rent has been paid by Tenant in advance under the
     Lease, except for the Total Monthly Rent, as described above, that became 
     due for the current month.

7.   No Tenant Default.  Tenant is not in default under the Lease and is
     current in the payment of any and all charges required to be paid by 
     Tenant, except as indicated below:

     ________________________________________________________________________

     ________________________________________________________________________

     ________________________________________________________________________

8.   Subordination and Attornment.  In the event that Landlord's interest
     is conveyed or Landlord otherwise relinquishes possession of the Demised
     Premises to a third party, including but not limited to any mortgagee or
     successor in interest to any such mortgagee, the undersigned agrees to 
     attorn to such third party and to recognize such third party as landlord.
     Tenant agrees to subordinate to any mortgagee or successor in interest to 
     any such mortgagee as more fully set forth in the Lease.  Any such 
     attornment or subordination shall be effective and self-operative without 
     the execution of any other instrument by either party hereto but, upon the 
     request of such landlord, the undersigned shall execute and  deliver an 
     instrument confirming such attornment or subordination.

                                      G-2

<PAGE>

9.   No Defense.  Tenant has no defenses, set-offs, basis for withholding
     of rent, claims or counterclaims against Landlord for any failure of 
     performance of any of the terms of the Lease, nor to the best of Tenant's 
     knowledge are there defaults or breaches by Landlord under the Lease, 
     including, without limitation, defaults relating to the design, condition 
     and tenant uses of the Buildings.

10.  No Prior Assignment or Subletting.  Tenant has not assigned, pledged,
     mortgaged or otherwise transferred or encumbered the Lease or the rental
     payments thereunder, nor sublet all or any part of the Demised Premises 
     and is not presently permitting the same to be occupied or used by anyone 
     other than Tenant except as indicated below:                      

     ________________________________________________________________________

     ________________________________________________________________________

     _______________________________________________________________________.

11.  Use of Premises.  Tenant has not accumulated, recycled, stored,
     treated, spilled, emitted, leaked or disposed of any hazardous, toxic or
     polluting substances or wastes at the property.  Tenant has not received 
     notice from any governmental agency that it may be responsible for clean-
     up of the property or surrounding areas pursuant to the Federal 
     Comprehensive Environmental, Response, Compensation and Liability Act, 42 
     U.S.C. Section 9601 et seq., the Federal Water Pollution Control Act (33 
     U.S.C.A. Section 1151 et seq.), the Clean Water Act of 1977 (33 U.S.C.A. 
     Section 1251 et seq.), or the regulations promulgated thereunder (if 
     applicable), or any other federal, state or local environmental law, 
     regulation or ordinance.

          The undersigned makes this Certificate and Statement with the
understanding that Landlord and any others with which Landlord may be dealing
intend to rely upon this Certificate and Statement and the undersigned agrees
that they may so rely.

Dated: ________________, 199_.


   ________________________________________
                                     (Name of Tenant)

                               G-3

<PAGE>

                                   By:______________________________________
                                      Name:
                                      ______________________________________
                                      Title:
                                      ______________________________________
 

                                    G-4

<PAGE>

                               EXHIBIT "H"

                     PROPERTY ENVIRONMENTAL STATUS

     IBM, the former owner of the property, manufactured computer punch cards
and printer ribbons at the South Brunswick facility during which time IBM
utilized a common degreasing agent known as TCA.  In December 1977, TCA was
discovered in the groundwater beneath the Land.  As a result, IBM entered into
an Administrative Consent Order ("ACO") with the New Jersey Department of
Environmental Protection ("NJDEP") to perform a groundwater remediation program
which is still ongoing. IBM is solely responsible for the complete remediation
of the Land with respect to pre-purchase conditions to current NJDEP standards. 
The ACO, as amended, is filed of public record.

<PAGE>
 

                               EXHIBIT "I"

        HEATING, VENTILATION AND AIR CONDITIONING SPECIFICATIONS


     Landlord shall provide air conditioning and winter humidification on a 
year-round basis throughout the Demised Premises and Common Building 
Facilities. The equipment shall maintain a uniform (1) indoor temperature of 
76 degrees F.D.B. at 50% R.H, 5% automatic control in summer based on the 
local 2-1/2% outdoor design condition as specified in the latest edition of 
the "ASHRAE HANDBOOK OF FUNDAMENTALS" and (2) indoor temperature of 72 
degrees F.D.B. at 30% R.H. minimum in winter based on the local 97.5% outdoor 
design condition as specified in the latest edition of the "ASHRAE HANDBOOK 
OF FUNDAMENTALS". Automatic reset on the humidifiers to prevent condensation 
on walls and glass during extreme cold weather shall be installed.  
Temperature control shall be automatic and shall maintain temperature set at 
plus or minues 2 degrees F.  All systems shall conform to local and national 
codes.  In the event that Tenant exercises any right under the Lease, or 
otherwise, to modify the Building Service System or Leased Premises Service 
System, such that the air conditioning and winter humidification systems do 
not meet the above standards, Tenant shall be responsible for performing such 
additional work so that the air conditioning and winter humidification 
systems do meet the above standards.  

<PAGE>
 

     
                              EXHIBIT "J"

                               HOLIDAYS

     
                              New Year's Day
                              Presidents' Day     
                              Memorial Day
                              Independence Day*
                              Labor Day
                              Thanksgiving
                              Day following Thanksgiving
                              Christmas*


                    *    When July 4 or Christmas falls on a Tuesday, Monday is
                         also deemed a Holiday; and when July 4 or Christmas
                         falls on a Thursday, Friday is also deemed a Holiday.
<PAGE>
 

                                   EXHIBIT "K"

                         PLAN OF PROPERTY AND PARKING AREAS

                                (to be provided)

<PAGE>
 

                                  EXHIBIT "L"

                                  TENANT WORK

     
1.   Completion Schedule.  Within sixty (60) days after the execution of this
Lease, Tenant shall deliver to Landlord, for Landlord's review and approval, a
schedule ("Work Schedule") setting forth a timetable for the planning and
completion of the installation of improvements to be constructed by Tenant in
the Demised Premises (the "Tenant Work").  The Work Schedule shall set forth
each of the various items of work to be done by or approval to be given by
Landlord and Tenant in connection with the completion of the Tenant Work.  Such
Work Schedule shall be submitted to Landlord for its approval and, upon approval
by both Landlord and Tenant, such Work Schedule shall become the basis for
completing the Tenant Work.

2.   Tenant Work.  Reference herein to "Tenant Work" shall include all work to
be done in the Demised Premises pursuant to the Tenant Work Plans described in
Section 3 below, including, but not limited to, partitioning, doors, ceilings,
floor coverings, wall finishes (including paint and wall covering), electrical
(including lighting, switching, telephones, outlets, etc.), plumbing, heating,
ventilating and air conditioning, fire protection, cabinets and other millwork.

3.   Tenant Work Plans.  Immediately after the execution of the Lease, Tenant's
architect shall prepare final working drawings and specifications for the Tenant
Work.  Such final working drawings and specifications are referred to herein as
the "Tenant Work Plans."  The Tenant Work Plans must be consistent with Landlord
standards, conform to all applicable laws, ordinances, regulations, codes and
other requirements of governmental authorities and with the regulations of
Landlord's insurance underwriter and meet the further requirements set forth in
the Schedule attached hereto.  Any such working drawings shall be reviewed and
approved or disapproved by Landlord (any disapproval being accompanied by a
detailed explanation of the reason for such disapproval) within thirty (30) days
after submission to Landlord.  Following approval of such working drawings, or
revised working drawings, as the case may be, the working drawings shall be
submitted to the appropriate governmental bodies by Tenant's architect for plan
checking, the issuance of a building permit, and securing of all other necessary
governmental approvals.  Tenant, with Landlord's cooperation and subject to
Landlord's approval, not to be unreasonably withheld, shall cause to be made any
changes in the plans and specifications necessary to obtain the building permit.

4.   Construction of Tenant Work.  After the Tenant Work Plans have been
prepared and approved, and a building permit for the Tenant Work has been
issued, Tenant, upon Landlord's approval, shall enter into a construction
contract with its contractor for the installation of the Tenant Work in
accordance with the Tenant Work Plans.  All contractors or subcontractors of
Tenant, and any contract entered into between Tenant and any contractor,

                                  L-1

<PAGE>

shall be approved by Landlord prior to work commencement.  Tenant shall
supervise the completion of such work and shall use due diligence to secure
substantial completion of the work in accordance with the Work Schedule.  The
Tenant Work shall be constructed in accordance with the Tenant Work Plans
approved by Landlord, the requirements of all applicable laws, ordinances,
regulations, codes and other requirements of governmental authorities and with
the regulations of Landlord's underwriter.  In addition, the Tenant Work shall
be constructed in a thorough, first-class and workmanlike manner, shall
incorporate only new materials and shall be in good and usable condition at the
date of completion.  At any time and from time to time during the construction
of the Tenant Work, Landlord, Landlord's architect and Landlord's general
contractor may enter upon the Demised Premises and inspect the Tenant Work and
take such steps as they may deem necessary for the protection of the Buildings
and/or any premises adjacent to the Demised Premises.  Such inspection shall,
however, be for Landlord's benefit only and may not be relied upon by Tenant or
any other party.  A portion of the cost of constructing the Tenant Work shall be
paid as provided in Section 5 hereof.  

5.   Payment of Cost of the Tenant Work.

     (a)  Landlord hereby grants to Tenant a "Tenant Allowance" of up to Forty
Dollars ($40.00) per square foot of Rentable Area of the Demised Premises for a
total of up to Three Million Five Hundred Two Thousand Dollars ($3,502,000.00). 
Such Tenant Allowance shall be used only for:

               (1)  Preparing the drawings and specifications, including
architectural, mechanical, electrical, plumbing and structural drawings and all
other aspects of the Tenant Work Plans.

               (2)  Plan check, permit and license fees relating to construction
of the Tenant Work.

               (3)  Construction of the Tenant Work, including, without
limitation, the following:

                    (a)  Installation within the Demised Premises of all
                         partitioning, doors, floor coverings, ceilings, wall
                         coverings and painting, millwork and similar items.

                    (b)  All electrical wiring, lighting fixtures, outlets,
                         emergency generators and switches, and other electrical
                         work to be installed within or outside of the Demised
                         Premises.

                                        L-2

<PAGE>

                    (c)  The furnishing and installation of all duct work,
                         terminal boxes, diffusers and accessories required for
                         the completion of the heating, ventilation and air
                         conditioning systems within the Demised Premises.

                    (d)  Any additional Tenant requirements including, but not
                         limited to, odor control, special heating, ventilation
                         and air conditioning, noise or vibration control or
                         other special systems.

                    (e)  All fire and life protection systems such as fire
                         walls, alarms, including accessories, safety control
                         systems, sprinklers, fire piping, and wiring installed
                         within the Demised Premises.

                    (f)  Installation of the security systems in the Buildings. 

                    (g)  All plumbing, fixtures, pipes and accessories to be
                         installed within the Demised Premises.

                    (h)  Testing and inspection costs.

                    (i)  Reasonable contractors' fees, including, but not
                         limited to, any fees based on general conditions.

          (4)  All other out-of-pocket costs to be expended by Landlord in the
approval or construction of the Tenant Work, excluding those costs incurred by
Landlord for construction of Landlord's Work, as noted in Exhibit "D".

     (b)  The cost of each item shall be charged against the Tenant Allowance. 
In the event that the cost of installing the Tenant Work, as established by
Tenant's final pricing schedule, shall exceed the Tenant Allowance, or if any of
the Tenant Work is not to be paid out of the Tenant Allowance as provided above,
the excess shall be paid by Tenant.

6.   Completion and Rental Commencement Date.  The commencement of the Term 
of the Lease and Tenant's obligation for the payment of Fixed Rent under the 
Lease shall commence on the dates specified in the Lease.  At any time after 
the Commencement Date, the Tenant Allowance shall be paid by Landlord (x) to 
Tenant to reimburse Tenant for amounts theretofore paid to Tenant's vendors, 
suppliers or contractors upon receipt of paid invoices, or (y) directly to 
Tenant's vendors, suppliers or contractors, promptly upon Landlord's receipt 
of invoices for the cost of the work delivered by Tenant to Landlord for 
payment to such vendors, suppliers or contractors together with a letter (a 
"Direction of Payment Letter") authorizing and directing Landlord to pay such 
invoices, and, provided that whether Landlord shall reimburse Tenant pursuant 
to clause (x) or shall pay Tenant's vendors, suppliers or 

                                     L-3

<PAGE>

contractors pursuant to clause (y), Landlord shall have received (a) a 
certificate signed by Tenant and Tenant's Architect setting forth (i) that 
the sum then requested was paid or is owed by Tenant and was or is due to 
contractors, subcontractors, materialmen, engineers and other persons who 
have rendered services or furnished materials in connection with work on the 
Tenant Work, (ii) a complete description of such services and materials and 
the amounts paid or to be paid to each of such persons in respect thereof, 
(iii) that the work described in the certificate has been completed 
substantially in accordance with the Tenant Work Plans and (iv) the amount of 
all previous payments made by Landlord hereunder with respect to Tenant Work 
and that no part of the sums being requested were part of a prior request for 
which payment was made, (b) paid receipts or such other proof of payment as 
Landlord shall reasonably require for all such work completed (other than 
that which is the subject of the then pending disbursement in the event 
Landlord is paying Tenant's vendors, suppliers or contractors directly) and 
(c) lien waivers satisfactory to Landlord executed by any contractors or 
subcontractors furnishing labor or supplying materials in connection with 
such work with respect to all portions thereof previously completed (other 
than that which is the subject of the then pending disbursement in the event 
Landlord is paying Tenant's vendors, suppliers or contractors directly).  
Landlord shall reimburse Tenant or pay such invoices on behalf of Tenant 
within thirty (30) days after Landlord's receipt of a written request for 
reimbursement from Tenant or Direction of Payment Letter and shall debit the 
Tenant Allowance therefor, provided further, however, that (x) Tenant shall 
not submit a request for reimbursement or a Direction of Payment Letter more 
than once per calendar month, (y) an amount equal to 10% of the Tenant 
Allowance shall be held back by Landlord until Tenant has complied with all 
of its obligations.

7.   Insurance.

     (a)  All of Tenant's contractors shall maintain the following insurance
coverages in the minimum amounts specified below or such greater amounts as may
be required by Landlord based upon the risks of the project or good insurance
practices:  

               (1)  Commercial General Liability Insurance including
                    Products/Completed Operations, Owners and Contractors
                    Protective Liability and Broad Form Contractual Liability
                    with the exclusion pertaining to explosion collapse and
                    underground property damage hazards eliminated.  

               (2)  Business Automobile Liability Insurance including owned,
                    hired, and non-owned automobiles.

               (3)  Statutory Workers' Compensation Insurance, including
                    occupational disease with employers' liability limits not
                    less than mandated by statute.

                                  L-4

<PAGE>

     (b)  In addition to the foregoing insurance coverages, during the course of
construction, Tenant or Tenant's general contractor or construction manager
shall maintain "All-risk" builder's risk insurance for the full replacement cost
of the Tenant Work.

     (c)  The insurance identified under a(i) and (ii) above shall (a) be in
such amounts as may be reasonably determined by Landlord (but not less than
$1,000,000 or more than $5,000,000), depending on the scope and nature of the
Tenant Work, (b) name Landlord and any other parties designated by Landlord as
additional insureds, (c) be in companies licensed to do business in New Jersey
and reasonably satisfactory to Landlord, and (d) provide that the policies will
not be changed, canceled or expire until at least thirty (30) days prior written
notice has been given to Landlord.  Evidence of all coverage shall be delivered
to Landlord prior to any such contractor or subcontractor commencing work in the
Buildings.  The liability of Tenant, its contractors and subcontractors shall
not be limited because of the insurance required hereunder nor to the amounts
thereof nor because of any exclusions from coverage in any insurance policy.

8.   Performance Bonds.  Unless Tenant or its general contractor provides
payment and performance bonds for the full cost of the Tenant Work, each
contract and subcontract providing for materials and/or services with a value in
excess of $25,000 shall require the Tenant's general contractor thereunder to
obtain payment and performance bonds in the full amount of its contract or
subcontract.  All bonds required pursuant to this provision shall be in form
reasonably acceptable to Landlord, shall be issued by reputable surety companies
licensed to do business in New Jersey and shall name Landlord and Tenant as
obligees. 

9.   Landlord Procedures.  Tenant shall comply with all procedures and policies
established by Landlord from time to time relating to construction by tenants in
the Building.  

10.  Coordination of Work.  Construction of the Tenant Work shall be coordinated
with all work being performed by Landlord and other occupants of the Building to
the end that the Tenant Work will not interfere with the operation of the
Building or interfere with or delay the completion of any other construction
within the Building.  Such work shall be performed in a manner so as not to
disturb or annoy other tenants or occupants of the Building and shall be
performed only during such hours and under such conditions as shall be
established by Landlord.

11.  Safety.  Tenant shall cause Tenant's contractors to (i) take all
precautions necessary for the prevention of accidents and for the safety of
persons and property, (ii) comply with all applicable laws, ordinances, rules,
regulations and orders of any public authority relating thereto, and (iii)
promptly report to Landlord any injury and furnish Landlord a written accident
report within 24 hours of the accident and a copy of the accident report filed
with its insurance carrier at the time of filing of such report.  

                                 L-5

<PAGE>

12.  Miscellaneous.
 
     (a)  Tenant and Tenant's contractors shall be solely responsible for the
transportation, safekeeping and storage of materials and equipment used in the
performance of the Tenant Work, for the removal of waste and debris resulting
therefrom, and for any damage caused by them to any part of the Project.  It
shall be Tenant's responsibility to cause each of Tenant's contractors to
maintain continuous protection of adjacent property and improvements against
damage by reason of the performance of the Tenant Work.  It shall also be
Tenant's responsibility to cause each Tenant's contractor to properly protect
the Tenant Work.  Any damage caused by Tenant's contractors to any portion of
the Building or to any property of Landlord or of any occupant or tenant of the
Building shall be repaired to its condition prior to such damage at no expense
to Landlord.

     (b)  Tenant shall cause Tenant's contractors to (i) keep the Demised
Premises and adjacent areas, as well as the loading docks, elevators, logistic
areas and surrounding areas, free from accumulations of waste material or
rubbish, (ii) keep dirt and dust from infiltrating into adjacent tenant, common
and mechanical areas, (iii) protect the front and top of all perimeter HVAC
units and thoroughly clean them upon completion of work, (iv) block off supply
and return grills, diffusers and ducts to keep dust from entering into the
building HVAC system, (iii) forthwith remove all rubbish, tools, equipment and
materials from in and about the Demised Premises and the Buildings upon
completion of the work. 

     (c)  Tenant's contractors may not use any space within the Building for
storage handling or moving of materials or equipment and/or for the location of
a field office or facilities for the employees of such contractor or
subcontractor without obtaining Landlord's prior written approval for each such
use.  If any Tenant's contractor shall use any space in the Building for any or
all of the aforesaid enumerated purposes or any other similar purpose without
obtaining Landlord's written approval therefor, Landlord shall have the right to
terminate such use and remove all of such Tenant's Contractor's materials,
equipment and other property from such space, without Landlord being liable to
Tenant and/or to such Tenant's contractor, and the cost of such termination
and/or removal shall be paid by Tenant to Landlord.

     (d)  Tenant shall promptly pay all Tenant's contractors or apply for such
payment under the Tenant Allowance.  Should any lien be made or filed in
connection with the Tenant Work the cost of which is Tenant's responsibility,
Tenant shall bond against or discharge the same within (10) days after receiving
notice thereof.  If Tenant shall fail to cause such lien to be bonded against or
to be discharged within such period, then, in addition to any other right or
remedy which Landlord may have under this Lease, at law or in equity, Landlord
may, but shall not be obligated to, discharge the same either by paying the
amount claimed to be due or by procuring the discharge of such lien by deposit
or by bonding.  Any amount so paid by Landlord and all costs and expenses
incurred by Landlord in connection therewith, together 

                                 L-6

<PAGE>

with interest at the Default Rate from the respective dates of Landlord's making
of the payment and incurring of the cost and expense, shall constitute
Additional Rent payable by Tenant under this Lease and shall be paid by Tenant
to Landlord on demand.

     (e)  Upon completion of the Tenant Work, Tenant shall furnish Landlord with
contractors' affidavits and full and final waivers of liens and receipted bills
covering all labor and materials.

     (f)  Within sixty (60) days after the Tenant Work have been completed,
Tenant shall provide Landlord with a complete set of reproducible, record
drawings for the Buildings showing as-built conditions, including any manuals,
warranties or other such documents relating to the Tenant Work.

     (g)  Tenant shall indemnify, defend and hold harmless Landlord, its agents,
contractors and employees from and against all claims, damages, liabilities,
losses and expenses of whatever nature, including but not limited to, reasonable
attorneys' fees, arising out of or resulting from the negligence or willful
misconduct of Tenant, Tenant's contractors, or their respective agents and
employees in the course of exercising its rights under this Exhibit "L".  Tenant
shall provide or cause to be provided in all contracts with each Tenant's
contractor that such Tenant's contractor shall indemnify, defend and hold
harmless Landlord, its agents and employees, from and against all claims,
damages, liabilities, losses and expenses of whatever nature, including but not
limited to, reasonable attorneys' fees, arising out of or resulting from the
negligence or willful misconduct of such Tenant's contractor or its agents or
employees in connection with the performance of the Tenant Work.  The foregoing
indemnities shall be in addition to the insurance requirements set forth in this
Exhibit and shall not be in discharge or substitution of same, and shall not be
limited in any way by any limitations on the amount or type of damages.

                                    L-7

<PAGE>
 
                                 Schedule

     In addition to complying with the requirements for Plans and Specifications
generally (as set forth in this Exhibit "L"), the Tenant Work Plans shall comply
with the following requirements:

1.   Architectural drawings must include the following:

     (a)  Partition locations and types (including any slab-to-slab partitions
          or special acoustical treatment required);
     (b)  Door locations, door schedule, door frames and the swing of each door;
     (c)  Reflected ceiling plan;
     (d)  Millwork items;
     (e)  Hardware schedule;
     (f)  Finish schedule showing all finish types and locations; and
     (g)  Telephone rooms in addition to Base Building telephone closets.

2.   Structural drawings must include the following:

     (a)  Location of any floor openings and stair drawings;
     (b)  Location and extent of any floor loading beyond building standard; and
     (c)  Any structural changes caused by Tenant's design (including raised
          flooring).

3.   Electrical drawings must include the following:

     (a)  Location and extent of any special electric requirements caused by
          equipment such as computer hardware, copiers or supplemental A/C units
          (i.e., separate circuiting, coaxial cabling, etc.);
     (b)  Estimate of total electrical load on each floor;
     (c)  Location of all electrical outlets, switches, telephone outlets, exit
          signs, and lighting fixtures;
     (d)  Location of all computer equipment systems and special audio-visual
          equipment; and
     (e)  Location and type of all fire alarm system devices and wiring.

4.   Heating, ventilating and air conditioning (HVAC) drawings must include the
     following:

     (a)  Location of any duct work, ceiling diffusers, and thermostats;
     (b)  Variable air volume (VAV) unit quantities and sizing information;
     (c)  Location and sizing of any supplemental HVAC equipment; and
     (d)  Estimate of total HVAC load on each floor.

                                L-8

<PAGE>

5.   Plumbing drawings must include the following (if applicable):

     (a)  Location of kitchen, kitchenettes, etc.;
     (b)  Location of drinking fountains; and
     (c)  Location of sinks and toilets (other than base building).

6.   Sprinkler and other fire suppression system drawings and specifications and
design calculations.

7.   Tenant security system must include:

     (a)  A preliminary outline equipment brochure and riser diagram indicating
          all components (electrical power characteristics, voltages, and
          specific locations on plan);
     (b)  All requirements for dedicated circuits;
     (c)  All requirements for bonding and grounding;
     (d)  All requirements for outside connections to the telephone company or a
          central protective alarm agency;
     (e)  All emergency circuiting requirements; and
     (f)  The type, sizes, quantities and location of all required cable and
          circuit.




                                  L-9

<PAGE>

                             EXHIBIT "M"


     SUBORDINATION, ATTORNMENT AND NON-DISTURBANCE AGREEMENT


          THIS SUBORDINATION, NON-DISTURBANCE AND ATTORNMENT AGREEMENT (this
"Agreement") is made and entered into this ____ day of ___________, 19__, by and
among Teleport Communications Group Inc., a Delaware corporation ("Tenant''),
with a mailing address of _______________________________________, and
______________________________, a __________ corporation ("Mortgagee"), with a
mailing address of ______________________________________________ and South
Brunswick Investors, L.P., a Delaware limited partnership ("Landlord") with a
mailing address of __________________________________.

                              W I T N E S S E T H:

          WHEREAS, Landlord and Tenant have entered into a lease (the "Lease")
dated ____________________ of certain premises (the "Premises") situate
___________________, erected on the tract of land described in Exhibit "A"
attached hereto and made a part hereof; and

          WHEREAS, Landlord is about to make, execute and deliver to Mortgagee a
certain promissory note secured by a first lien Mortgage on the Premises (the
"Mortgage"); and

          WHEREAS, the Lease will be assigned by Landlord to Mortgagee as
further security for the promissory note.

          NOW, THEREFORE, in consideration of the mutual promises hereinafter
contained and other good and valuable consideration, the receipt and sufficiency
whereof are hereby acknowledged, Tenant and Mortgagee, intending to be legally
bound hereby, covenant and agree as follows:

          1.   The Lease shall be subject and subordinate to the lien of the
Mortgage and to all the terms, conditions and provisions thereof, and to any
renewals, extensions, modifications or replacements thereof, to the full extent
of the principal sum secured by the Mortgage, all interest accrued and from time
to time unpaid thereon and any other amounts required to be paid by the terms of
the Mortgage and the instruments secured thereby, unless Mortgagee elects to
subordinate the mortgage to the Lease.


                                  M-1

<PAGE>

          2.   Provided Tenant is not in default beyond the applicable grace
period provided for in the Lease:

               (a)  Tenant shall not be joined as an adverse or party defendant
in any action or proceeding which may be instituted or commenced by Mortgagee to
foreclose or enforce the Mortgage, unless Tenant is deemed to be a necessary
party.

               (b)  Tenant shall not be evicted from the Premises nor shall any
of Tenant's rights under the Lease be affected or disturbed in any way by reason
of this subordination or any modifications of or default under the Mortgage.

               (c)  Tenant's leasehold estate under the Lease shall not be
terminated or disturbed during the term of the Lease as it may be extended, by
reason of any default under the Mortgage.

               (d)  Provided Landlord is not in default under the terms of the
Mortgage, Mortgagee hereby subordinates and subjects its right to any portion of
the insurance proceeds otherwise payable to Landlord and/or Mortgagee, when and
to the extent necessary for Landlord to comply with its obligations of repair
and restoration as required by the provisions of the Lease.

               (e)  If Mortgagee or any successor in interest to it shall
succeed to the rights of Landlord under the Lease, whether through possession,
termination or cancellation of the Lease, surrender, assignment, judicial
action, sublettings, foreclosure action or delivery of a deed or otherwise,
Tenant will attorn to and recognize such successor-landlord as Tenant's landlord
and the successor-landlord will accept such attornment and recognize Tenant's
rights of possession and use of the Premises in accordance with the provisions
of the Lease and, without further evidence of such attornment and acceptance,
the parties shall be bound by and comply with all the terms, provisions,
covenants and obligations contained in the Lease, on their respective parts to
be performed.  Such successor-landlord shall not, however, be:

                    (i)  liable for any act or omission of Landlord or any prior
landlord;

                    (ii) obligated to Tenant for any security deposit or other
sums deposited with any prior landlord (including Landlord) under the Lease and
not physically delivered to Mortgagee;

                    (iii)     bound by any rent or additional rent which the
Tenant might have paid for more than the current month to any prior landlord
(including Landlord);

                                         M-2

<PAGE>

                    (iv) bound by any amendment or modification of the Lease or
any cancellation or surrender of the Lease made without the consent of Mortgagee
subsequent to the date hereof;

                    (v)  subject to any offsets, claims or defenses which Tenant
might have against any prior landlord (including Landlord);

                    (vi) bound or liable under any written or oral notice given
by Tenant to Landlord or any prior landlord; or

                   (vii) obligated or liable (financially or otherwise) on
account of any representation, warranty, or indemnification obligation of
Landlord with respect to hazardous materials, asbestos, or other environmental
laws, claims or liabilities, whether expressly stated as such or subsumed within
general obligations to comply with laws or preserve the benefits of Tenant's use
and enjoyment of the Premises.

          3.   Tenant will not exercise any remedy set forth in the Lease by
reason of a default by landlord thereunder unless and until Tenant has given
Mortgagee written notice of the default at the same time Landlord is notified
thereof, at Mortgagee's address stated on page one hereof or such other address
designated in writing to Tenant, and has afforded Mortgagee such time as under
the Lease is granted to Landlord to remedy the particular default.

          4.   Landlord and Tenant each agree not to amend, modify or accept a
termination of the Lease without the prior written consent of the Mortgagee and
that no such amendment, modification or termination will be effective as against
Mortgagee or its successors or assigns without such consent.

          5.   (a)  Tenant will not pay an installment of rent or any part
thereof more than thirty (30) days prior to the due date of such installment.

               (b)  After notice from Mortgagee to Tenant, Tenant will pay to
Mortgagee, or to such person or firm designated by Mortgagee, all rentals and
other monies due and to become due to Landlord under the Lease.

          6.   This Agreement shall inure to the benefit of and be binding upon
the parties hereto and their respective heirs, executors, distributees,
administrators, legal representatives, successors and assigns and may not be
modified orally or by any course of conduct other than except by a written
instrument signed by both parties hereto.

          7.   All notices required or permitted by this Agreement shall be
given by (i) hand delivery, (ii) U.S. Registered or Certified Mail, return
receipt requested, or (iii) nationally reputable overnight courier service, and
shall be addressed to the recipient at the 

                                    M-3

<PAGE>

respective address specified in the opening paragraph of this Agreement.  No
notice shall be effective unless and until actually received.  

          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed under seal as of the day and year first above written.

                                   TENANT:

                                   TELEPORT COMMUNICATIONS GROUP INC.


                                   ____________________________________
                                   By:
                                   Name:
                                   Title:


                                   LANDLORD:

                                   SOUTH BRUNSWICK INVESTORS, L.P.


                                   ____________________________________
                                   By:
                                   Name:
                                   Title:


                                   MORTGAGEE:


                                   ____________________________________
                                   By:
                                   Name:
                                   Title:






                                      M-4







<PAGE>

                              Notary Form of Landlord
                ---------------------------------------------------
                               Notary Form of Tenant
                ---------------------------------------------------
                              Notary Form of Mortgagee


                                    M-5


<PAGE>

                         AMENDMENT TO LEASE AGREEMENT

          THIS AMENDMENT TO LEASE AGREEMENT dated as of the 1st day of 
September, 1996, by and between SOUTH BRUNSWICK INVESTORS, L.P., a Delaware 
limited partnership ("Landlord") and TELEPORT COMMUNICATIONS GROUP INC., a 
Delaware corporation ("Tenant").

                               Background

          Pursuant to a lease dated February 20, 1996 by and between Tenant 
and Landlord (the "Lease"), Tenant leased from Landlord certain space in the 
buildings known as Building 2 and the UPS Building, located in the Princeton 
Technology Center, South Brunswick Township, Middlesex County, New Jersey 
(the "Premises").

          Under the terms of the Lease, Landlord and Tenant each assumed 
responsibility for the construction of certain improvements to the Premises 
required before Tenant could take occupancy.  The improvements were expected 
to be completed by June 30, 1996.  Accordingly, the Lease was scheduled to 
commence on July 1, 1996.  For reasons not the fault of either party, the 
improvements were not substantially completed until August 31, 1996.  The 
Tenant was, therefore, unable to occupy the Premises until September 1, 1996.

          Landlord and Tenant now desire to modify the Lease to reflect these 
facts.

          NOW, THEREFORE, in consideration of the mutual covenants contained 
in this Amendment and intending to be legally bound hereby, Landlord and 
Tenant agree as follows:

          1.   In Section 2 of the Lease, the term "July 1, 1996" is hereby 
deleted and the following is substituted in lieu thereof: "September 1, 1996".

          2.   Except as expressly set forth herein, all terms and conditions 
of the Lease shall remain in full force and effect and are incorporated 
herein by reference.  The parties ratify and confirm the Lease as amended by 
this Amendment.  This Amendment shall be binding upon and inure to the 
benefit of the parties hereto and their successors and assigns.

<PAGE>

          3.   This Amendment may be executed in counterpart with the same 
effect as if the signatures thereto and hereto were taken upon the same 
instrument, but all of such counterparts taken together shall be deemed to 
constitute one and the same instrument.

          IN WITNESS WHEREOF, the parties hereto have caused this Amendment 
to Lease Agreement to be executed as of the day and year first above written.

                              LANDLORD:

                              SOUTH BRUNSWICK INVESTORS, L.P.,
                              a Delaware limited partnership

                                   By: South Brunswick Investment
                                   Company, L.L.C.

                                   By:__________________________

                                   Name:________________________

                                   Title:_______________________

                              TENANT:

                              TELEPORT COMMUNICATIONS GROUP INC.

                              By:_______________________________

                              Name:_____________________________

                              Title:____________________________

<PAGE>

                                                                  Exhibit 10.11


                                 AGREEMENT OF LEASE

                                       BETWEEN

                      SOUTH BRUNSWICK INVESTORS, L.P. (LANDLORD)

                                         AND

                     TELEPORT COMMUNICATIONS GROUP INC. (TENANT)



                              DATED AUGUST 19, 1996 


<PAGE>
                                  AGREEMENT OF LEASE
                                       BETWEEN 
                      SOUTH BRUNSWICK INVESTORS, L.P. (LANDLORD)
                                         AND
                     TELEPORT COMMUNICATIONS GROUP INC. (TENANT)

                               DATED AUGUST 19, 1996


                                  TABLE OF CONTENTS
<TABLE>
<CAPTION>

<S>    <C>                                                                       <C>
         
SECTION   TITLE                                                                  PAGE NO.
- -------   -----                                                                  --------
1.     DEMISED PREMISES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1

2.     LEASE TERM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1

3.     FIXED RENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1

4.     ADDITIONAL RENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1

5.     USE OF BUILDING 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1

6.     COMPLETION OF BUILDING 3. . . . . . . . . . . . . . . . . . . . . . . . . . .  2

7.     ALTERATIONS OR IMPROVEMENTS BY TENANT . . . . . . . . . . . . . . . . . . . .  2

8.     COVENANTS OF LANDLORD . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3

9.     COVENANTS OF TENANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3

10.    ASSIGNMENT AND SUBLETTING . . . . . . . . . . . . . . . . . . . . . . . . . .  5

11.    EMINENT DOMAIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5

12.    CASUALTY DAMAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6

13.    INSURANCE; INDEMNIFICATION OF LANDLORD; WAIVER OF SUBROGATION . . . . . . . .  6

14.    INSPECTION; ACCESS; CHANGES IN BUILDING FACILITIES. . . . . . . . . . . . . .  6

15.    DEFAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7

16.    LANDLORD'S REMEDIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7

17.    LANDLORD'S RIGHT TO CURE TENANT'S DEFAULT . . . . . . . . . . . . . . . . . .  8

18.    TENANT'S REMEDIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8

19.    ESTOPPEL CERTIFICATE. . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8

20.    HOLDING OVER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8

21.    SURRENDER OF BUILDING 3 . . . . . . . . . . . . . . . . . . . . . . . . . . .  8

22.    SUBORDINATION, ATTORNMENT AND NONDISTURBANCE. . . . . . . . . . . . . . . . .  8

23.    BROKERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9

24.    NOTICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9

25.    [INTENTIONALLY OMITTED] . . . . . . . . . . . . . . . . . . . . . . . . . . .  9

26.    [INTENTIONALLY OMITTED] . . . . . . . . . . . . . . . . . . . . . . . . . . .  9

27.    [INTENTIONALLY OMITTED] . . . . . . . . . . . . . . . . . . . . . . . . . . .  9

28.    RENEWAL TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9

29.    SIGNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9

30.    PARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

31.    ARBITRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

32.    ADDITIONAL RIGHTS OF TENANT . . . . . . . . . . . . . . . . . . . . . . . . . 10

33.    BUILDING 3 SECURITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

34.    RESTRICTIONS ON OTHER TENANTS IN BUILDING 3 . . . . . . . . . . . . . . . . . 11

35.    MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

</TABLE>
                                        (i)

<PAGE>

                                   List of Exhibits

     Exhibit "A":   Plan of Demised Premises
     Exhibit "B":   Rent Schedule
     Exhibit "C":   Taxes, Operating Expense and Other Additional Rent
     Exhibit "D":   Schedule of Landlord's Work
     Exhibit "E":   Janitorial Specifications
     Exhibit "F":   Rules and Regulations
     Exhibit "G":   Tenant Estoppel Certificate and Statement
     Exhibit "H":   Property Environmental Status
     Exhibit "I":   HVAC Specifications
     Exhibit "J":   Holidays
     Exhibit "K":   Plan of Project and Parking Areas
     Exhibit "L":   Tenant Work
     Exhibit "M":   Form of Subordination,
                    Non-disturbance and Attornment Agreement













                                       (ii)


<PAGE>

                                  AGREEMENT OF LEASE

     THIS AGREEMENT OF LEASE ("Lease") is made this 19th day of August, 1996, 
by and between SOUTH BRUNSWICK INVESTORS, L.P., a Delaware limited 
partnership ("Landlord") and TELEPORT COMMUNICATIONS GROUP INC., a Delaware 
corporation ("Tenant"). 

                                      Background

     Pursuant to a lease dated February 20, 1996 by and between Tenant and 
Landlord (the "First Lease"), Tenant currently leases from Landlord certain 
space (the "First Space") containing 87,550 rentable square feet in buildings 
erected on certain property ("Lot #1") designated as Lot #1 on that certain 
subdivision plan entitled "Plan of Minor Subdivision" prepared by Ezra Golub 
Associates and recorded in the Clerk's Office of Middlesex County in Book 
4300, page 868 (the "Plan").  Lot #1 comprises a portion of the Princeton 
Technology Center, formerly known as South Brunswick Corporate Center, 
located on Ridge Road, Dayton, New Jersey (the "Project").

     Pursuant to a lease by and between Landlord and International Business 
Machines ("IBM") dated August 11, 1995 (the "IBM Lease"), IBM currently 
leases certain other space in the Project (the "IBM Space") containing 
200,000 rentable square feet and located in buildings (the "Buildings") 
erected on certain property (the "Land") designated as Lot #2 on the Plan.  
The Buildings consist of one building containing 170,000 rentable square feet 
("Building 1") and one building containing 30,000 rentable square feet 
("Building 3").  The Land and Buildings are depicted on Exhibit "K" attached 
hereto and incorporated herein by reference.  The IBM Lease expires on March 
31, 2002 (the "Initial IBM Lease Term").  IBM has the option to extend the 
IBM Lease for either or both of the Buildings by five years.

     Tenant desires to lease Building 3 for a period commencing on 
___________, 1996 and terminating on December 31, 2006, with options to 
extend.  In connection therewith, IBM, Tenant and Landlord have agreed to 
enter into the following three agreements: (i) a sublease between IBM, as 
landlord, and Tenant, as tenant, for Building 3 for the remainder of the 
Initial IBM Lease Term (the "IBM Sublease"), (ii) an amendment to the IBM 
Lease, eliminating IBM's option to extend the IBM Lease for Building 3 at the 
expiration of the Initial IBM Lease Term, and (iii) this lease agreement 
between Tenant and Landlord, providing for Tenant's continued tenancy of 
Building 3 after expiration of the Initial IBM Lease Term, subject to the 
terms hereof.

     Under the terms of the IBM Sublease, Tenant will be responsible for 
constructing certain improvements in Building 3.  Landlord is willing to 
advance certain sums to Tenant for a portion of the cost of these 
improvements, and Tenant shall thereafter reimburse Landlord for such 
advances through a series of monthly payments commencing during the term of 
the IBM Sublease and continuing on during the terms of both the IBM Sublease 
and this Lease.  

     Intending to be legally bound, Landlord and Tenant agree as set forth 
below.

1.   DEMISED PREMISES.  Landlord, for the term and subject to the provisions 
and conditions hereof, leases to Tenant, and Tenant rents from Landlord, 
approximately 30,000 rentable square feet of space consisting of Building 3 
(depicted in Exhibit "A" attached hereto and made a part hereof), together 
with rights of ingress and egress thereto, and with the right in common with 
others to use, to the extent applicable, the elevators and common lobbies, 
loading docks, passageways, stairways and vestibules, and to pass over and 
park on those areas designated by Landlord for tenant parking.  

2.   LEASE TERM.  The Lease Term (the "Lease Term") shall commence on April 
1, 2002 (the "Commencement Date") and shall continue until December 31, 2006, 
unless extended or sooner terminated as provided herein.  Unless otherwise 
expressly set forth herein, all obligations of Landlord and Tenant hereunder 
shall commence on the Commencement Date.

3.   FIXED RENT.  Fixed rent (the "Fixed Rent") is payable by Tenant 
beginning on the Commencement Date in monthly installments equal to 
one-twelfth (1/12th) of the total annual Fixed Rent (the "Annual Fixed Rent") 
payable for the applicable period as set forth in Exhibit "B" attached 
hereto, without prior notice or demand, and without any setoff or deduction 
whatsoever, in advance, on the first day of each month at such place as 
Landlord may direct.  The Annual Fixed Rent set forth herein is an annualized 
amount.  In addition, if the Lease Term commences on a day other than the 
first day of a calendar month, Tenant shall pay to Landlord, on or before the 
Commencement Date of the Lease Term, a pro rata portion of the monthly 
installment of rent (including Fixed Rent and any Additional Rent, as 
hereinafter defined), such pro rata portion to be based on the actual number 
of calendar days remaining in such partial month after the Commencement Date 
of the Lease Term.  If the Lease Term shall expire on other than the last day 
of a calendar month, such monthly installment of Fixed Rent and Additional 
Rent shall be prorated for each calendar day of such partial month.  Upon the 
second occurrence and those thereafter within any six-month period during the 
Lease Term, if any portion of Fixed Rent, Additional Rent or any other sum 
payable to Landlord hereunder shall be due and unpaid for more than ten (10) 
days, Tenant shall pay to Landlord, without notice or demand, a late charge 
equal to 5% of such overdue amount to partially compensate Landlord for its 
administrative costs.  Tenant acknowledges that such late fee is a reasonable 
approximation of such costs and does not constitute a penalty.  In addition, 
all amounts overdue and unpaid in excess of ten (10) days after notice by 
Landlord that such amounts are overdue  and unpaid shall bear interest at a 
rate equal to two percent (2%) per annum greater than the prime rate of 
interest as published in the Wall Street Journal, eastern edition, from time 
to time (the "Default Rate"), as the same may change from time to time, from 
the due date until the date of payment thereof by Tenant, provided, however, 
that nothing contained herein or elsewhere in this Lease shall be construed 
or implemented in such a manner as to allow Landlord to charge or receive 
interest in excess of the maximum legal rate then allowed by law. Landlord 
and Tenant understand and agree that memos written on rental checks or any 
other payment forms delivered to Landlord do not and shall not, throughout 
the Lease Term hereunder, constitute satisfaction of any current or 
outstanding debt of Tenant pursuant to this Lease, and, provided further that 
any such memo shall not preclude Landlord from recovering any balance of any 
sum or sums due under this Lease.  In addition, a letter or similar type 
statement accompanying any rental check or payment form delivered to Landlord 
pursuant to this Lease also shall have no force or effect under this Lease as 
such may relate to the satisfaction of any debt of Tenant hereunder.

4.   ADDITIONAL RENT.  Tenant shall pay, without any setoff or deduction 
whatsoever, (i) the Tax Adjustment and the Operating Expense Adjustment, as 
such terms are defined in Exhibit "C" hereto, in the amounts and in the 
manner set forth in Exhibit "C", and (ii) the Tenant Improvement Payments, as 
such term is defined in Exhibit "L" hereto, in the amounts and in the manner 
set forth in Exhibit "L".  The Tax Adjustment, the Operating Expense 
Adjustment, the Tenant Improvement Payments and all other sums due hereunder 
(other than Fixed Rent) are sometimes hereinafter referred to together as the 
Additional Rent.

5.   USE OF BUILDING 3.

     5.1. Subject to all other restrictions set forth in this Lease, the 
Tenant may use Building 3 only for the installation, operation and 
maintenance (including repair and replacement) of equipment and facilities in 
connection with Tenant's telecommunications business, executive and general 
office uses and any other legally permitted uses related thereto, and for no 
other purpose.  For purposes of this Lease, the term "general office use" 
shall not include use as a school, college, university or educational 
institution of any type other than the training of Tenant's customers, agents 
and employees, use as a governmental agency, use for any purpose which is not 
consistent 

<PAGE>

with the operation of the Buildings as first-class office buildings, use as 
an employment, recruitment or temporary help service or agency, or any use 
involving regular traffic by the general public.

     5.2. Tenant shall not use or permit any use of Building 3 which creates 
any safety or environmental hazard, or which would:  (i) be dangerous to the 
Buildings or other tenants in the Buildings, (ii) be disturbing to other 
tenants of the Buildings, or (iii) cause any increase in the premium cost for 
any insurance which Landlord may then have in effect with respect to the 
Buildings generally, unless Tenant refuses to pay such additional costs.

     5.3. This Lease includes the right of Tenant to use the Common Building 
Facilities.  The words "Common Building Facilities" shall mean all of the 
facilities in or around Building 3 designed and intended for use by tenants 
of Building 3 in common with Landlord and other tenants of Building 3, if 
any, including corridors; elevators; fire stairs; telephone and electric 
closets; telephone trunk lines and electric risers; aisles; walkways; truck 
docks; plazas; the roof and parking areas dedicated for use by occupants of 
and visitors to the Buildings (the "Building Parking Area") to the extent not 
reserved for exclusive use by Landlord or others; courts; restrooms; service 
areas; lobbies; landscaped areas, and all other common and service areas of 
Building 3 intended for such use on the date hereof; excluding, however, 
restrooms, lobbies, corridors and telephone and electric closets on floors 
leased entirely by Tenant which shall be for the exclusive use of Tenant and 
shall not be used in common with other tenants or occupants of the Buildings.

     5.4. (a)  Tenant shall comply with all statutes, rules, ordinances, 
orders, codes and regulations, other governmental requirements and legal 
requirements and standards issued thereunder (collectively referred to in 
this Lease as the "Laws") which are applicable to Tenant's use and occupancy 
of Building 3.  Nothing herein shall be deemed to impose any obligation upon 
Tenant for any portion of Building 3 for which Tenant is not otherwise 
responsible pursuant to the provisions of this Lease or for any restorations, 
alterations, replacements or repairs to the Buildings required to be made by 
Landlord pursuant to the provisions of this Lease.

          (b)  (i)  Except as otherwise set forth herein, Landlord shall 
comply with all Laws which (1) affect the Buildings and Land or (2) relate to 
the performance by Landlord of any duties or obligations to be performed by 
Landlord under this Lease. Landlord represents that, except as otherwise set 
forth in Exhibit "H" and with regard to matters covered by the Americans with 
Disabilities Act, the Buildings and Land are in compliance with all 
applicable Laws as of the date of this Lease.  Except as otherwise set forth 
in Exhibit "H",  Landlord shall be responsible for ensuring that the 
Buildings and Land comply with all design, construction, energy conservation, 
environmental, fire, health, and safety Laws, provided, however, that Tenant 
shall be responsible for ensuring, at its sole cost, that the Tenant Work (as 
defined in Exhibit "L") and any other alterations, additions or improvements 
to the Buildings or on the Land constructed by Tenant (collectively with the 
Tenant Work, "Tenant Improvements") comply, at all times from the date hereof 
to the date of expiration of this Lease, with all design, construction, 
energy conservation, environmental, fire, health, and safety Laws and the 
requirements of Landlord's insurance underwriters.

               (ii) All boilers and other pressure vessel equipment shall be 
constructed and maintained by Landlord in accordance with ASME Standards and 
Codes.

              (iii) Landlord shall regularly inspect and maintain the HVAC 
system and treat the cooling tower with U.S. Environmental Protection Agency 
registered chemicals to prevent the buildup of slime, algae, and bacteria, 
and shall follow the current practices of the American Society of Heating, 
Refrigeration and Air Conditioning Engineers.

6.   COMPLETION OF BUILDING 3.  Tenant agrees to accept possession of the 
Building 3 in an "AS IS" condition.  Notwithstanding the foregoing, Landlord 
agrees that it shall promptly correct any latent defects in Building 3, other 
than those relating to Tenant Improvements, provided that such defects are 
reported to Landlord within nine months after the date hereof.

7.   ALTERATIONS OR IMPROVEMENTS BY TENANT.  

     7.1. (a)  Tenant shall not make any alterations, additions or 
improvements to Building 3 in excess of $25,000 without the prior written 
approval of Landlord, and then only in accordance with plans and 
specifications previously approved in writing by Landlord, which approval 
shall not be unreasonably withheld or delayed, provided, however, that such 
approval may be subject to reasonable conditions including, without 
limitation, that Tenant be required to pay for any out-of-pocket cost to 
Landlord occasioned thereby.  Notwithstanding the foregoing, Landlord agrees 
that Tenant shall be permitted, if necessary, to reinforce a portion of the 
floor(s) within Building 3 to support battery stacks and other equipment.  

     7.2. (a)  Notwithstanding the foregoing, Tenant shall not alter, 
improve, replace or change the Structure except in accordance with this 
Section 7.2.  Tenant may make alterations, improvements, replacements and 
other changes to the Structure, provided that Landlord consents thereto, 
which consent may be withheld at Landlord's reasonable discretion.

          (b)  If Tenant desires to make alterations, improvements, 
replacements or other changes to the Structure, Tenant shall make a request 
for Landlord's approval by submitting to Landlord a list of proposed 
contractors and detailed plans and specifications for the work to be 
performed.  Landlord shall respond within ten (10) business days from receipt 
of the same, approving those contractors and those portions of the work that 
are acceptable and disapproving those contractors and portions of the work 
that are, in Landlord's reasonable judgment, unacceptable, and specifying in 
detail the nature of Landlord's objection.

          (c)  The word "Structure" shall mean bearing walls, roof, exterior 
walls, support beams, foundation, window frames, floor slabs and support 
columns of the Buildings.

     7.3. Regardless of whether or not Tenant is required under this Lease to 
obtain Landlord's consent to the construction of a particular Tenant 
Improvement, Tenant shall, in all cases, prior to construction of the Tenant 
Improvement, provide Landlord, with (i) notice of its intent to construct 
such Tenant Improvement, and (ii) copies of all permits required to construct 
the Tenant Improvement.  All Tenant Improvements shall be constructed in 
accordance with the requirements of all applicable laws, ordinances, 
regulations, codes and other requirements of governmental authorities and 
with the regulations of Landlord's insurance underwriter.  In addition, all 
Tenant Improvements shall be constructed in a thorough, first-class and 
workmanlike manner and shall be in good and usable condition at the date of 
completion.  At any time and from time to time during the construction of 
Tenant Improvements, Landlord, Landlord's architect and Landlord's general 
contractor may enter Building 3 and inspect the Tenant Improvements for the 
protection of Building 3.  Such inspection shall, however, be for Landlord's 
benefit only and may not be relied upon by Tenant or any other party.  When 
constructing any Tenant Improvements, Tenant shall comply with the 
requirements of Sections 7, 8, 9, 10, 11 and 12 of Exhibit "L" attached 
hereto.

     7.4. Tenant Improvements shall be deemed part of Building 3 and shall 
not be removed by Tenant.  Notwithstanding the foregoing, by notice to Tenant 
given at the time of approval, Landlord may require that Tenant either: (i) 
remove any such alterations, additions or improvements, repair any damage to 
Building 3 occasioned by their installation or removal, and restore Building 
3 to substantially the same condition as existed prior to the time when any 
such alterations, additions or improvements were made, or (ii) reimburse 
Landlord for the cost of such removal, repair and restoration.  With regard 
to any alterations, additions or improvements which Tenant is entitled to 
construct without Landlord consent, Tenant may, prior to constructing such 
alterations, additions or 

                                          2

<PAGE>

improvements, request that Landlord inform Tenant whether it will require 
that such alterations, additions or improvements be removed and Landlord 
shall, with reasonable promptness, so inform Tenant.

     7.5. As used in this Lease, the term "Tenant Improvements" shall not 
include Tenant's moveable personal property, trade fixtures and equipment  
(collectively, "Tenant's Owned Property").  Tenant's Owned Property shall be 
owned by and remain the property of Tenant and, subject to the provisions of 
Section 15, Tenant may remove all or any of Tenant's Owned Property at any 
time during the Term.  If Tenant removes such things or any of them, Tenant 
shall not be required to remove pipes, wires and the like from the walls, 
ceilings or floors, provided Tenant properly cuts, disconnects and caps such 
pipes and wires and seals them off as required by Laws and Landlord's 
insurance underwriters.

     7.6. In the event of a dispute arising concerning the provisions of this 
Section 7, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 31 hereof.

8.   COVENANTS OF LANDLORD.

     8.1. Tenant shall be granted access to Building 3, including facilities 
for loading, unloading, delivery and pickup in the ordinary course of 
business, twenty-four (24) hours per day, seven (7) days a week.  Landlord 
shall provide passenger elevator service twenty-four (24) hours a day, seven 
(7) days a week, subject to reasonable outages for repairs or maintenance.

     8.2. Landlord will supply, for normal office use, heat or air 
conditioning Monday through Friday from 7:00 a.m. to 6:00 p.m., and Saturday 
from 8:00 a.m. to 1:00 p.m. local time excluding Holidays (as defined in 
Exhibit "J"), elevator service (where applicable), janitorial and cleaning 
services as set forth in Exhibit "E" hereto, electricity, and hot and cold 
potable water, all in amounts consistent with services provided in similar 
first-class buildings in the community, provided that: (i) Landlord shall not 
be liable for failure to supply or interruption of any such service by reason 
of any cause beyond Landlord's reasonable control and Landlord shall not be 
liable for consequential damages in any event; (ii) Landlord shall install 
meters to measure the electricity consumed in Building 3 and Tenant shall pay 
directly for the cost of all electrical consumption therein; (iii) if Tenant 
requires janitorial and cleaning services beyond those provided by Landlord, 
Tenant shall arrange for such additional services through Landlord, and 
Tenant shall pay Landlord for such additional services upon receipt of 
billing therefor; and (iv) if Tenant requires installation of a separate or 
supplementary heating, cooling, ventilating and/or air conditioning system 
Tenant shall pay all costs in connection with the furnishing, installation 
and operation thereof.

     8.3. In the event that Tenant requires heat or air conditioning beyond 
the hours set forth in Section 8.2 above, Tenant shall so notify Landlord (i) 
before noon on the business day when such service is required for the evening 
or (ii) by noon of the preceding business day when such service is required 
on a Saturday, Sunday or Holiday, and Tenant shall pay Landlord for 
Landlord's actual costs incurred thereby, within thirty (30) days of being 
billed therefor.  Any such bill shall include a tabulation of the days and 
hours upon which such services were provided.

     8.4. Landlord shall make all necessary repairs to the exterior windows, 
walls and other structural parts of Building 3, the plumbing, heating, 
ventilating, air conditioning and electrical systems of Building 3, the roof 
of Building 3, the common areas of Building 3, and the parking areas, 
sidewalks and other common areas of the Land, and shall keep all such common 
areas reasonably free of debris, ice and snow. Notwithstanding the foregoing, 
Landlord shall not be obligated to make any such repair until the expiration 
of a reasonable period of time after Landlord becomes aware that such repair 
is needed.  Furthermore, in no event shall Landlord be obligated to repair 
any damage caused by any act, omission or negligence of Tenant or any of its 
employees, agents, invitees, licensees, subtenants or contractors, or any 
defect or damage attributable to failure by Tenant or any of its employees, 
agents, invitees, licensees, subtenants or contractors to construct any 
Tenant Improvements in compliance with the terms of this Lease.  Tenant shall 
reimburse Landlord for all costs and expenses of repairing and replacing all 
damage or injury to Building 3 caused by Tenant or any of its employees, 
agents, invitees, licensees, subtenants or contractors, or by all or any of 
them moving in or out of Building 3, or by installation or removal of 
furniture, fixtures or other property by all or any of them, or by the 
failure of all or any of them to construct any Tenant Improvements in 
compliance with the terms of this Lease.  Such costs and expenses shall be 
payable as Additional Rent hereunder and shall be paid by Tenant within 
thirty (30) days after Tenant is billed therefor.

     8.5. Tenant, upon paying the Annual Fixed Rent and all Additional Rent 
when due, and upon observing, keeping and performing when required all of the 
covenants, agreements and conditions of this Lease on Tenant's part to be 
observed, kept and performed, shall quietly have and enjoy Building 3 
throughout the Lease Term without hindrance or molestation by Landlord or by 
anyone claiming in, through or under Landlord, subject, however, to the terms 
of this Lease.

     8.6. (a)  If, after notice by Tenant, Landlord fails or refuses to make 
any repairs, restoration, or replacements which it is required to make under 
Section 8 or elsewhere in this Lease (other than repairs following a 
casualty, which are covered in Section 12) within thirty (30) days, or if 
such repairs, restorations or replacements cannot reasonably be made within 
thirty (30) days, if Landlord shall not commence such repairs within thirty 
(30) days and thereafter diligently pursue the same to completion, Tenant may 
declare an event of default and cure such default. Landlord shall reimburse 
Tenant for the cost of such cure within thirty (30) days after Landlord 
receives Tenant's invoice.

          (b)  In the event of a dispute arising concerning the provisions of 
this Section 8.6, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 31 hereof.

     8.7. If, by reason of an emergency, repairs, restoration, or 
replacements become necessary and by the provisions hereof are the 
responsibility of Landlord, Tenant may make such repairs, restoration or 
replacements which, in the opinion of Tenant, are necessary for the 
preservation of Building 3, or of the safety or health of the occupants in 
the Project, or of Tenant's Owned Property, or are required by the Laws; 
provided, however, that Tenant shall first make a reasonable effort to inform 
Landlord before making them.

9.   COVENANTS OF TENANT.

     9.1. Except as otherwise set forth in Section 8.4 hereof, Tenant will, 
at Tenant's sole cost and expense, keep Building 3 and the fixtures and 
appurtenances therein in good order and repair at all times, reasonable wear 
and tear excepted. Notwithstanding the foregoing, Landlord may, upon thirty 
(30) days' written notice (except in case of emergency), but shall not be 
required to, perform all or any portion of Tenant's repair obligations as set 
forth above on Tenant's behalf.  In such event, following the performance of 
such repairs by Landlord, Landlord shall charge Tenant the amount of the 
expense therefor.  If Tenant fails to pay such amount within thirty (30) days 
following delivery of Landlord's invoice therefor, such amount shall 
thereafter bear interest at the Default Rate until the date of payment by 
Tenant.  In the event Landlord does not elect to perform all or any portion 
of Tenant's repair obligations as set forth above and Tenant fails to make 
such repairs within thirty (30) days of the date such work becomes necessary, 
Landlord may, but shall not be required to, perform such work and charge the 
amount of the expense therefor, with interest accruing and payable thereon, 
all in accordance with Section 19 below;

                                          3

<PAGE>

     9.2. Tenant will comply with any covenants, easements and restrictions 
governing the Land or Buildings (including, but not limited to (i) that 
certain Declaration of Cross-Easements, Covenants and Restrictions of South 
Brunswick Corporate Center made by Landlord, dated October 9, 1995 and 
recorded in the Clerk's Office of Middlesex County in Deed Book 4304, page 
745 and (ii) that certain Declaration of Certain Easements and Covenants of 
South Brunswick Corporate Center made by Landlord, dated October 9, 1995 and 
recorded in the Clerk's Office of Middlesex County in Deed Book 4304, page 
773) and shall indemnify, defend and hold Landlord harmless from all 
consequences from Tenant's failure to do so;

     9.3. Tenant will promptly notify Landlord of any damage to or defects in 
Building 3 of which it becomes aware, any notices of violation received by 
Tenant and any injuries to person or property which occur therein or claims 
relating thereto;

     9.4. Tenant will not place within or bring into Building 3 any machinery 
or other personalty having a weight in excess of the design capacity of 
Building 3, such capacity on above-grade floors being 100 pounds per square 
foot, without the prior written consent of Landlord and without full 
compliance with all applicable building security measures;

     9.5. Tenant will comply with the rules and regulations set forth in 
Exhibit "F" hereto and with all reasonable changes and additions thereto upon 
notice by Landlord to Tenant (such rules and regulations, together with all 
changes and additions thereto, being part of this Lease);

     9.6. Tenant will comply with all reasonable recommendations of 
Landlord's or Tenant's insurance carriers relating to layout, use, storage of 
materials and maintenance of Building 3; and

     9.7. Tenant further agrees to the following:

          (a)  As used in this Lease, the following terms shall have the 
following meanings:

               (i)  "Environmental Laws" shall mean all federal, state or 
local laws, regulations, rules, ordinances or administrative or judicial 
rulings relating to (A) releases or threatened releases of Hazardous 
Materials or materials containing Hazardous Materials, including, without 
limitation, the Comprehensive Environmental Response, Compensation and 
Liability Act or the New Jersey Spill Compensation and Control Act; (B) the 
manufacture, handling, transport, use, treatment, storage or disposal of 
Hazardous Materials or materials containing Hazardous Materials (C) the 
transfer of industrial facilities, including, without limitation, ISRA; (D) 
storage tanks; or (E) otherwise relating to the environment or to the 
protection of human health.

              (ii) "Hazardous Materials" shall mean all chemical, 
biological, organic, inorganic, infectious, toxic or hazardous pollutants, 
contaminants, chemicals, substances, materials or wastes of whatever kind or 
nature, whether liquid, solid or gaseous, including, without limitation, 
pollutants, contaminants, chemicals, substances, materials and wastes 
regulated under, defined, listed or included in any Environmental Laws.  
Hazardous Materials shall include, without limitation, asbestos, 
polychlorinated biphenyls, and petroleum products.

             (iii) "Hazardous Materials Inventory" shall mean a 
comprehensive inventory of all Hazardous Materials used, generated, stored, 
treated or disposed of by Tenant at or about Building 3.

              (iv) "ISRA" shall mean the New Jersey Industrial Site Recovery 
Act, N.J.S.A. 13:1K-6 et seq. and the regulations promulgated thereunder, as 
amended from time to time.

               (v) "Losses" shall mean all liabilities, obligations, losses, 
damages, penalties, actions, judgment, lawsuits, costs, expenses, 
disbursements, orders or decrees, including, without limitation, attorneys' 
and consultants' fees and expenses.

              (vi) "NJDEP" shall mean the New Jersey Department of 
Environmental Protection.

          (b)  Tenant shall not use Building 3 or the Land for the 
generation, use, manufacture, recycling, transportation, treatment, storage, 
handling, discharge or disposal of any Hazardous Materials; provided, 
however, that the foregoing shall not be deemed or construed to prohibit 
Tenant's possession or use of products containing Hazardous Materials so long 
as such products are commonly found in an office environment or 
non-manufacturing telecommunications business and are handled, stored, used 
and disposed of in compliance with all Environmental Laws.  Furthermore, 
Tenant will not engage in any activity at Building 3 or the Land which poses 
a risk of damage to the environment or which would subject Tenant, Landlord, 
Building 3 or the Land to responsibility or liability under any Environmental 
Law.

          (c)  Tenant shall (i) comply with all Environmental Laws in 
connection with Tenant's use or occupancy of Building 3 and the Land; (ii) 
obtain, maintain in full force and effect, and comply with, all permits 
required under Environmental Laws; (iii) comply with all record keeping and 
reporting requirements imposed by Environmental Laws concerning the use, 
handling, treatment, storage, disposal or release of Hazardous Materials at 
Building 3 and the Land; (iv) report to Landlord any release or discharge of 
Hazardous Materials within two business days of such discharge or release; 
(v) provide to Landlord copies of all written reports concerning such 
discharge of Hazardous Materials that are required to be filed with 
Governmental Entities under Environmental Laws; (vi) maintain and annually 
update a Hazardous Materials Inventory with respect to Hazardous Materials 
used, generated, treated, stored or disposed of at Building 3 and the Land; 
and (vii) make available to Landlord for inspection and copying (at 
Landlord's expense), upon reasonable notice and at reasonable times, such 
Hazardous Materials Inventory and any other reports, inventories or other 
records required to be kept under Environmental Laws concerning the use, 
generation, treatment, storage, disposal or release of Hazardous Materials.

          (d)  In the event that Tenant's operations at Building 3 or the 
Land cause any part of Building 3 or the Land to be deemed an industrial 
establishment (as such term is defined by ISRA) and such Tenant takes any 
action that triggers the applicability of ISRA, Tenant shall:  (i) take all 
steps necessary to achieve compliance with ISRA with respect to such 
transaction or event; (ii) pay all costs and fees associated with achieving 
compliance with ISRA in connection with such matter; and (iii) provide 
Landlord with copies of:  (a) all correspondence with the NJDEP; (b) all 
field and laboratory data generated by or on behalf of Tenant; and (c) all 
reports, summaries proposals and recommendations submitted to the NJDEP in 
connection with such matter.

          (e)  Tenant does hereby agree to indemnify, defend and save 
harmless Landlord from any and all Losses resulting from any claim, demand, 
liability, obligation, right or cause of action, including but not limited to 
governmental action or other third party action, (collectively, "Claims"), 
that is asserted against or incurred by Landlord, Building 3 or the Land as a 
result of Tenant's breach of any representation, warranty, or covenant 
hereof; or arising out of the operations or activities or presence of Tenant 
or any assignee, sublessee, agent, or representative of Tenant at Building 3 
or the Land; or arising from environmental conditions or violations at 
Building 3. including without limitation the presence of Hazardous Materials 
at, on, or under Building 3 or the discharge or release of Hazardous 
Materials from Building 3, provided, however, that Tenant shall not be 
obligated to indemnify Landlord under this paragraph if (i) the Claim arises 
due to events or conditions which occurred prior to the date of this Lease or 
(ii) Tenant is not responsible for such Claim under Environmental Laws, 
except as consequence of any negligence or willful misconduct of Landlord.

                                       4

<PAGE>

          (f)  Landlord does hereby agree to indemnify and save harmless 
Tenant from all Losses resulting from any Claims that are asserted against 
Tenant or Building 3 as a result of the presence of Hazardous Materials at 
Building 3 (i) deposited at Building 3 prior to the date of this Lease or 
(ii) for which Tenant is not responsible under Environmental Laws.  To the 
best of Landlord's knowledge, Building 3 is in compliance with Environmental 
Laws as of the date hereof.

          (g)  The indemnities contained herein and the environmental 
representations, warranties and covenants of Landlord and Tenant shall 
survive termination of this Lease.

          (h)  Exhibit "H" contains a summary of certain environmental 
conditions on the Project concerning which IBM has certain remediation 
obligations pursuant to an agreement with Landlord and various agreements 
with NJDEP.

10.  ASSIGNMENT AND SUBLETTING.

     10.1.     Tenant shall not assign, pledge, mortgage or otherwise 
transfer or encumber this Lease, nor sublet all or any part of Building 3 or 
permit the same to be occupied or used by anyone other than Tenant or its 
employees, without Landlord's prior written consent, which consent shall not 
be unreasonably withheld or delayed. It will not be unreasonable for Landlord 
to withhold its consent if the financial responsibility or business of a 
proposed assignee or subtenant is unsatisfactory to Landlord, or if Landlord 
deems such business not to be consonant with that of other tenants in the 
Buildings.

     10.2.     Tenant's request for consent to any sublet or assignment shall 
be in writing and shall contain the name, address, and description of the 
business of the proposed assignee or subtenant, its most recent financial 
statement and other evidence of financial responsibility, its intended use of 
Building 3, and the terms and conditions of the proposed assignment or 
subletting.  Within twenty (20) days from receipt of such request, Landlord 
shall either: (1) grant or refuse consent; or (2) if the request is for 
consent to a proposed assignment of this Lease, to terminate this Lease and 
the Lease Term effective as of the last day of the third month following the 
month in which the request was received.

     10.3.     Each assignee hereunder shall assume and be deemed to have 
assumed this Lease and shall be and remain liable jointly and severally with 
Tenant for all payments and for the due performance of all terms, covenants, 
conditions and provisions herein contained on Tenant's part to be observed 
and performed.  No assignment shall be binding upon Landlord unless the 
assignee shall deliver to Landlord an instrument in form and substance 
satisfactory to Landlord containing a covenant of assumption by the assignee, 
but the failure or refusal of assignee to execute and deliver the same shall 
not release assignee from its liability as set forth herein.  Any sublease or 
assignment document shall comply with the requirements of Section 5 of this 
Lease.  Fifty percent (50%) of any profit or additional consideration or rent 
in excess of the Fixed Rent or Additional Rent payable by Tenant hereunder 
which is payable to Tenant as a result of any assignment or subletting 
(excluding any assignment or subletting to Related Parties (as defined 
hereafter)) after subtraction of Tenant's subleasing expenses, shall be paid 
to Landlord as Additional Rent when received by Tenant; provided that, in no 
event shall any rental paid for use of Tenant's Owned Property be payable to 
Landlord.  Any such purported lease, sublease, license, concession or other 
agreement shall be absolutely void and ineffective as a conveyance of any 
right or interest in the possession, use or occupancy of any part of Building 
3.  Notwithstanding the foregoing, Tenant shall have the right to place the 
telecommunication equipment of other tenants and/or other of its customers in 
Building 3 and such placement shall not be deemed an assignment or sublease, 
provided, however, that except for a right of use, neither such placement nor 
any agreement between Tenant and any other tenant or customer with regard to 
such placement shall grant to any such tenant or customer any rights 
whatsoever in or to Building 3.

     10.4.     Any consent by Landlord hereunder shall not constitute a 
waiver of strict future compliance by Tenant with the provisions of this 
Section or a release of Tenant from the full performance by Tenant of any of 
the terms, covenants, provisions, or conditions in this Lease contained.

     10.5.     Notwithstanding any of the foregoing, Tenant may assign or 
sublet this Agreement, or any portion thereof, without Landlord's consent, to 
any entity (i) which controls, is controlled by or is under common control 
with Tenant, (ii) resulting from the merger or consolidation with Tenant, or 
to any entity which acquires all of the assets of Tenant as a going concern 
or the assets of the business that is being conducted in Building 3, (iii) in 
which Tenant, or any entity affiliated with Tenant has at least a ten percent 
(10%) ownership interest, or (iv) which has entered into a management 
contract with Tenant or any entity in which Tenant, or any entity having at 
least a ten percent (10%) ownership interest in Tenant, has at least a ten 
percent (10%) ownership interest (collectively, "Related Parties").  Any such 
assignment or sublease shall not, in any way, affect or limit the liability 
of Tenant under the terms of this Agreement.

11.  EMINENT DOMAIN.  

     11.1.     If the whole or more than fifty percent (50%) of Building 3 or 
the Land (or use or occupancy of Building 3) shall be taken or condemned by 
any governmental or quasi-governmental authority for any public or 
quasi-public use or purpose (including sale under threat of such a taking), 
or if the owner elects to convey title to the condemnor by a deed in lieu of 
condemnation, then this Lease shall cease and terminate on the earlier of (i) 
the date when title vests in such governmental or quasi-governmental 
authority or (ii) the date upon which such governmental or quasi-governmental 
authority takes possession.  The Fixed Rent and Additional Rent shall be 
abated from and after such date.

     11.2.     If fifty percent (50%) or less of Building 3 or the Land shall 
be taken or condemned by any governmental or quasi-governmental authority for 
any public or quasi-public use or purpose (including sale under threat of 
such a taking), or if the owner elects to convey title to the condemnor by a 
deed in lieu of condemnation, and as a result thereof, in Tenant's reasonable 
judgment, Building 3 cannot be used for Tenant's permitted use as set forth 
herein, then this Lease shall cease and terminate on the earlier of (i) the 
date when title vests in such governmental or quasi-governmental authority or 
(ii) the date upon which such governmental or quasi-governmental authority 
takes possession.  The Fixed Rent and Additional Rent shall be abated from 
and after such date.  

     11.3.     If fifty percent (50%) or less of Building 3, or the Land 
shall be taken or condemned by any governmental or quasi-governmental 
authority for any public or quasi-public use or purpose (including sale under 
threat of such a taking), or if the owner elects to convey title to the 
condemnor by a deed in lieu of condemnation, and this Lease is not terminated 
as set forth in Section 11.2 above, the Fixed Rent and Tenant's Proportionate 
Share (as defined in Exhibit "C") shall be equitably adjusted from and after 
the earlier of (i) the date when title vests in such governmental or 
quasi-governmental authority or (ii) the date upon which such governmental or 
quasi-governmental authority takes possession.  The Lease shall otherwise 
continue in full force and effect.  

     11.4.     Tenant shall have no claim against Landlord for any portion of 
the amount that may be awarded as damages as a result of any governmental or 
quasi-governmental taking or condemnation (or sale under threat of such 
taking or condemnation) and all rights of Tenant or damages therefore are 
hereby assigned by Tenant to Landlord.  The foregoing shall not, however, 
deprive Tenant of any separate award for moving expenses, dislocation damages 
or for any other award which would not reduce the award payable to Landlord.

                                       5
<PAGE>

12.  CASUALTY DAMAGE.

     12.1.     In the event of damage to or destruction of Building 3 caused 
by fire or other casualty, or any such damage or destruction to the 
facilities necessary to provide services and normal access to Building 3 in 
accordance herewith, Landlord shall undertake to make repairs and 
restorations with reasonable diligence within two hundred forty (240) days of 
the casualty as hereinafter provided, unless this Lease has been terminated 
by Landlord or Tenant as hereinafter provided or unless any mortgagee which 
is entitled to receive casualty insurance proceeds fails to make available to 
Landlord a sufficient amount of such proceeds to cover the cost of such 
repairs and restoration.  If (i) the damage is of such nature or extent that, 
in Landlord's reasonable judgment, more than two hundred forty (240) days 
would be required (with normal work crews and hours) to repair and restore 
the part of Building 3 which has been damaged, or (ii) Building 3 is so 
damaged that, in Landlord's reasonable judgment, it is uneconomical to 
restore or repair Building 3, as the case may be, or (iii) less than two (2) 
years then remain on the current Lease Term, Landlord shall so advise Tenant 
promptly, and either party, in the case described in clause (i) above, or 
Landlord, in the cases described in clauses (ii) or (iii) above, within 
thirty (30) days after any such damage or destruction, shall have the right 
to terminate this Lease by written notice to the other, as of the date 
specified in such notice, which termination date shall be no later than ten 
(10) days after the date of such notice.  In the event that less than two (2) 
years remain on the current Lease Term and the damage is of such a nature or 
extent that, in Landlord's reasonable judgment, more than ninety (90) days 
would be required (with normal work crews) to repair and restore the part of 
Building 3 which has been damaged, Tenant shall have the right to terminate 
this Lease by written notice to Landlord, as of the date specified in such 
notice, which termination date shall be no later than ten (10) days after the 
date of such notice.

     12.2.     In the event of fire or other casualty damage, provided this 
Lease is not terminated pursuant to the terms of this Section and is 
otherwise in full force and effect, and sufficient casualty insurance 
proceeds are available for application to such restoration or repair, 
Landlord shall proceed diligently to restore Building 3 to substantially its 
condition prior to the occurrence of the damage.  Tenant shall be responsible 
for the repair or restoration of all of Tenant's Owned Property located in, 
at or about Building 3, subject to Section 7 and such other conditions as 
Landlord may require.

     12.3.     The validity and effect of this Lease shall not be impaired in 
any way by the failure of Landlord to complete repairs and restoration of 
Building 3 or of the Buildings within two hundred forty (240) days after 
commencement of the work, even if Landlord had in good faith notified Tenant 
that the repair and restoration could be completed within such period, 
provided that Landlord proceeds diligently with such repair and restoration 
and completes such repair and restoration within two hundred seventy (270) 
days after commencement of the work.  In the event the work is not completed 
within such two hundred seventy (270) day period, Tenant shall have the 
right, by notice given within fifteen (15) days after the expiration of such 
two hundred seventy (270) day period, to terminate the Lease.  In the case of 
damage to Building 3 which is of a nature or extent that Tenant's continued 
occupancy is in the judgment of Landlord substantially impaired, then the 
Annual Fixed Rent payable by Tenant hereunder and Tenant's Proportionate 
Share shall be equitably abated or adjusted for the duration of such 
impairment.  

13.  INSURANCE; INDEMNIFICATION OF LANDLORD; WAIVER OF SUBROGATION.

     13.1.     Tenant covenants and agrees to exonerate, indemnify, defend, 
protect and save Landlord, its representatives and Landlord's managing agent, 
if any, harmless from and against any and all claims, demands, expenses, 
losses, suits and damages as may be occasioned by reason of (i) any accident 
or matter occurring at or about Building 3, causing injury to persons or 
damage to property (including, without limitation, Building 3), unless such 
accident or other matter resulted from the negligence or otherwise tortious 
act of Landlord or Landlord's agents or employees, (ii) the failure of Tenant 
fully and faithfully to perform the obligations and observe the conditions of 
this Lease, and (iii) the negligence or otherwise tortious act of Tenant or 
anyone in or about the Project on behalf of or at the invitation or right of 
Tenant.  Tenant shall maintain in full force and effect, at its own expense, 
comprehensive general liability insurance (including a contractual liability 
and fire legal liability insurance endorsement) naming as an additional 
insured Landlord and Landlord's managing agent, if any, against claims for 
bodily injury, death or property damage in amounts not less than 
$2,000,000.00 (or such higher limits as may be determined by Landlord from 
time to time) and business interruption insurance in an amount sufficient to 
reimburse Tenant for loss of earnings attributable to prevention of access to 
Building 3 for a period of at least twelve (12) months.  All policies shall 
be issued by companies having a Best's financial rating of A or better and a 
size class rating of XII (12) or larger or otherwise acceptable to Landlord. 
At or prior to the Commencement Date, Tenant shall deposit certificates of 
such insurance with Landlord and shall deposit with Landlord renewals thereof 
at least fifteen (15) days prior to the expiration thereof.  Such policy or 
policies of insurance or certificates thereof shall have attached thereto an 
endorsement that such policy shall not be canceled without at least thirty 
(30) days prior written notice to Landlord and Landlord's managing agent, if 
any, that no act or omission of Tenant shall invalidate the interest of 
Landlord under such insurance and expressly waiving all rights of subrogation 
as set forth below. At Landlord's request, Tenant shall provide Landlord with 
a letter from an authorized representative of its insurance carrier stating 
that Tenant's current and effective insurance coverage complies with the 
requirements contained herein.  Any insurance required of Tenant hereunder 
may be furnished by Tenant under a blanket policy carried by it, provided 
that such blanket policy shall contain an endorsement that names Landlord as 
an additional insured, specifically references Building 3, and guarantees a 
minimum limit available for Building 3 equal to or greater than the insurance 
amounts required under this Section.  Each policy evidencing the insurance to 
be carried by Tenant hereunder shall contain a clause that such policy and 
the coverage evidenced thereby shall be primary with respect to any policies 
carried by Landlord, and that any coverage carried by Landlord shall be 
excess insurance.

     13.2.     Landlord and Tenant hereby release the other from any and all 
liability or responsibility to the other or anyone claiming through or under 
them by way of subrogation or otherwise for any loss or damage to property 
covered by insurance then in force, even if any such fire or other casualty 
occurrence shall have been caused by the fault or negligence of the other 
party, or anyone for whom such party may be responsible.  This release shall 
be applicable and in full force and effect, however, only to the extent of 
and with respect to any loss or damage occurring during such time as the 
policy or policies of insurance covering such loss shall contain a clause or 
endorsement to the effect that this release shall not adversely affect or 
impair such insurance or prejudice the right of the insured to recover 
thereunder.  To the extent available, Landlord and Tenant further agree to 
provide such endorsements for such insurance policies agreeing to the waiver 
of subrogation as required herein.

14.  INSPECTION; ACCESS; CHANGES IN BUILDING FACILITIES.

     14.1.     Upon reasonable notice and at reasonable times, accompanied by 
Tenant's employee or agent, Landlord and its agents or other representatives 
shall be permitted to enter Building 3 (i) to examine, inspect and protect 
Building 3, (ii) during the last nine (9) months of the Lease Term, or prior 
thereto if Tenant vacates Building 3, to show Building 3 to prospective 
tenants and to affix to any suitable part of Building 3 a notice for letting 
Building 3, or (iii) to show Building 3 to prospective purchasers, lenders 
and other interested parties and to affix to any suitable part of Building 3 
a notice for sale of Building 3.  Notwithstanding the foregoing, notice of 
entry shall not be required in the event of an emergency.

     14.2.     Upon reasonable notice and at reasonable times, accompanied by 
Tenant's employee or agent, Landlord shall have access to and use of all 
areas in Building 3 (including exterior building walls, core corridor walls 
and doors and any core corridor entrances), any roofs, and any space used for 
shafts, stacks, pipes, conduits, fan rooms, ducts, electric or other 
utilities, sinks or other facilities, as well as access to and through 
Building 3 for the purpose of operation, maintenance, decoration and repair, 
provided, however, 

                                       6
<PAGE>


that except in emergencies such access shall not be exercised so as to 
interfere unreasonably with Tenant's use of Building 3.  Tenant shall permit 
Landlord to install, use and maintain pipes, ducts and conduits in and 
through Building 3, provided that the installation work is performed at such 
times and by such methods as will not materially interfere with Tenant's use 
of Building 3, materially reduce the floor area thereof or materially and 
adversely affect Tenant's layout.  Landlord and Tenant shall cooperate with 
each other in the location of Landlord's and Tenant's facilities requiring 
such access.

     14.3.     Landlord reserves the right at any time upon ten (10) days' 
prior notice, without incurring any liability to Tenant therefor, to make 
such changes in or to the interior and exterior of Building 3 and the 
fixtures and equipment thereof, as well as in or to the entrances, halls, 
foyers, passages, doors, doorways, corridors, elevators, if any, stairways, 
bathrooms and other public parts thereof, and to the Land and any other 
improvements thereon, as Landlord may deem necessary or desirable; provided 
that there shall be no change that materially detracts from the character or 
quality of Building 3 or, in Tenant's reasonable judgment, materially and 
adversely affects Tenant's use and enjoyment of Building 3 and other rights 
granted pursuant to this Lease.

     14.4.     In the event of a dispute arising concerning the provisions of 
this Section 14, either party shall be permitted to submit such dispute to 
arbitration under the provisions of Section 31 hereof.

15.  DEFAULT.  

     15.1.     Any other provisions in this Lease notwithstanding, it shall 
be an event of default ("Event of Default") under this Lease if, during the 
Term: (i) Tenant fails to pay any installment of Fixed Rent, Additional Rent 
or other sum payable by Tenant hereunder when due and such failure continues 
for a period of ten (10) days after written notice from Landlord of such 
failure, or (ii) Tenant fails to observe or perform any other covenant or 
agreement of Tenant herein contained and such failure continues after written 
notice given by or on behalf of Landlord to Tenant for more than 30 days, or 
(iii) Tenant uses or occupies Building 3 other than as permitted hereunder, 
or (iv) Tenant assigns or sublets, or purports to assign or sublet, Building 
3 or any part thereof other than in the manner and upon the conditions set 
forth herein, or (v) Tenant abandons or vacates Building 3 without paying 
rent.  The notice and grace period provisions in clauses (i) and (ii) above 
shall have no application to the Events of Default referred to in clauses 
(iii) through (v) above.

     15.2.     It shall also be an Event of Default if, during the period 
from the date hereof to the Commencement Date: (i) Tenant fails to pay any 
installment of the Tenant Improvement Payments or other sum payable by Tenant 
hereunder when due and such failure continues for a period of ten (10) days 
after written notice from Landlord of such failure, or (ii) Tenant fails to 
observe or perform any other covenant or agreement of Tenant herein contained 
which Tenant is required to observe or perform prior to the Commencement 
Date, and such failure continues after written notice given by or on behalf 
of Landlord to Tenant for more than 30 days, or (iii) Tenant fails to pay any 
installment of Fixed Rent, Additional Rent or other sum payable by Tenant 
under the IBM Sublease when due, and such failure continues beyond any 
applicable grace period (and the IBM Sublease or Tenant's right of possession 
under the IBM Sublease is terminated as a result thereof), or (iv) Tenant 
uses or occupies Building 3 other than as permitted under the IBM Sublease 
(and the IBM Sublease or Tenant's right of possession under the IBM Sublease 
is terminated as a result thereof), or (v) Tenant assigns or sublets, or 
purports to assign or sublet, Building 3 or any part thereof other than in 
the manner and upon the conditions set forth herein or in the IBM Sublease 
(and the IBM Sublease or Tenant's right of possession under the IBM Sublease 
is terminated as a result thereof).  The notice and grace period provisions 
in clauses (i) and (ii) above shall have no application to the Events of 
Default referred to in clauses (iii) through (v) above.

     15.3.     It shall also be an Event of Default if, at any time from and 
after the date hereof:  (i) Tenant files a petition commencing a voluntary 
case, or has filed against it a petition commencing an involuntary case, 
under the Federal Bankruptcy Code (Title 11 of the United States Code), as 
now or hereafter in effect, or under any similar law, or files or has filed 
against it a petition or answer in bankruptcy or for reorganization or for an 
arrangement pursuant to any state bankruptcy law or any similar state law, 
and, in the case of any such involuntary action, such action shall not be 
dismissed, discharged or denied within sixty (60) days after the filing 
thereof, or Tenant consents or acquiesces in the filing thereof, or (ii) if 
Tenant is a banking organization, Tenant files an application for protection, 
voluntary liquidation or dissolution applicable to banking organizations, or 
(iii) a custodian, receiver, trustee or liquidator of Tenant or of all or 
substantially all of Tenant's property or of Building 3 shall be appointed in 
any proceedings brought by or against Tenant and, in the latter case, such 
entity shall not be discharged within sixty (60) days after such appointment 
or Tenant consents to or acquiesces in such appointment, or (iv) Tenant shall 
generally not pay Tenant's debts as such debts become due, or shall make an 
assignment for the benefit of creditors, or shall admit in writing its 
inability to pay its debts generally as they become due.  The notice and 
grace period provisions in Sections 15.1 (i) and (ii) and 15.2 (i) and (ii) 
above shall have no application to the Events of Default referred to this 
Section 15.3.

16.  LANDLORD'S REMEDIES.

     16.1.     Upon the occurrence of any Event of Default, Landlord at any 
time thereafter may at its option exercise any one or more of the following 
remedies:  

          (a)  Landlord may terminate this Lease, by written notice to 
Tenant, without any right by Tenant to reinstate its rights by payment of 
rent due or other performance of the terms and conditions hereof.  Upon such 
termination Tenant shall immediately surrender possession of Building 3 to 
Landlord, and Landlord shall immediately become entitled to receive from 
Tenant an amount equal to the aggregate of all unpaid Fixed Rent and 
Additional Rent (which Additional Rent shall be fixed at the level of the 
last complete Operating Year prior to such termination) reserved under this 
Lease through the end of the Term, determined as of the date of such 
termination.

          (b)  Landlord may, at Landlord's option, with or without 
terminating this Lease, enter upon Building 3 and remove any and all persons 
therefrom and take and retain possession thereof by any means available to 
Landlord, including summary dispossess proceedings.  

          (c)  If Landlord elects to terminate Tenant's right to possession 
only, without terminating the Lease, Landlord may, at the Landlord's option, 
enter into Building 3, remove Tenant's signs and other evidences of tenancy, 
and take and hold possession thereof as hereinabove provided, without such 
entry and possession terminating the Lease or releasing Tenant, in whole or 
in part, from Tenant's obligations to pay the rent hereunder or for any other 
of its obligations under this Lease.  Landlord may, but will not be under 
obligation to, relet all or any part of Building 3 in any manner, for any 
term, for such rent and upon terms satisfactory to Landlord and may decorate 
or make any repairs, changes, alterations or additions in or to Building 3 
that may be necessary or convenient.  If Landlord does not relet Building 3, 
Tenant will pay the Landlord on demand all unpaid amounts due from Tenant to 
Landlord under this Lease through the end of the Term.  If Building 3 is 
relet, Tenant shall pay any excess of the rent over the actual proceeds of 
such reletting, net of all expenses, including repairs or construction costs 
and leasing commissions. If Building 3 is at the time of any Event of Default 
sublet or leased by Tenant to others, Landlord may collect rents due from any 
subtenant or other tenant and apply such rents to the rent and other amounts 
due hereunder without in any way affecting Tenant's obligation to Landlord 
hereunder.

          (d)  Landlord may declare all unpaid Fixed Rent and all items of 
Additional Rent (the amount thereof to be based on historical amounts and 
Landlord's estimates for future amounts) through the end of the Term 
immediately due and payable, together with all other charges, payments, 
costs, and expenses payable by Tenant as though such amounts were payable in 
advance on the date the Event of Default occurred.  

                                       7
<PAGE>


          (e)  Landlord may remove all persons and property from Building 3, 
and store such property in a public warehouse or elsewhere at the cost of and 
for the account of Tenant, upon service of notice or resort to legal process 
and without being deemed guilty of trespass or becoming liable for any loss 
or damage which may be occasioned thereby. 

     16.2.     No expiration or termination of this Lease by operation of law 
or otherwise (except as expressly provided herein), and no repossession of 
Building 3 or any part thereof shall relieve Tenant of its liabilities and 
obligations hereunder, all of which shall survive such expiration, 
termination or repossession, and Landlord may, at its option, sue for and 
collect all rent and other charges due hereunder at any time as and when such 
charges accrue.  

     16.3.     In the event of breach or threatened breach by Tenant of any 
provision of this Lease, Landlord shall have the right of injunction and the 
right to invoke any remedy allowed at law or in equity in addition to other 
remedies provided for herein.

     16.4.     Tenant hereby expressly waives any and all rights of 
redemption granted by or under any present or future law in the event this 
Lease is terminated, or in the event of Landlord obtaining possession of 
Building 3, or in the event Tenant is evicted or dispossessed for any cause, 
by reason of violation by Tenant of any of the provisions of this Lease.  

     16.5.     No right or remedy herein conferred upon or reserved to 
Landlord is intended to be exclusive of any other right or remedy herein or 
by law provided, but each shall be cumulative and in addition to every other 
right or remedy given herein or now or hereafter existing at law or in equity 
or by statute.

     16.6.     In the event that Landlord commences suit for the repossession 
of Building 3, for the recovery of rent or any other amount due under the 
provisions of this Lease, or because of the breach of any other covenant 
herein contained on the part of Tenant to be kept or performed, Tenant shall, 
if Landlord shall prevail in such suit, pay to Landlord all reasonable 
expenses incurred in connection therewith, including reasonable attorneys' 
fees.

17.  LANDLORD'S RIGHT TO CURE TENANT'S DEFAULT.  If Tenant defaults in the 
making of any payment or in the doing of any act herein required to be made 
or done by Tenant (including expiration of any applicable cure periods), then 
Landlord may, but shall not be required to, make such payment or do such act, 
and charge the amount of Landlord's expense, with interest accruing and 
payable thereon at the Default Rate as of the date of the expenditure by 
Landlord or as of the date of payment thereof by Tenant, whichever is higher, 
from the date paid or incurred by Landlord to the date of payment thereof by 
Tenant.  Such payment and interest shall constitute Additional Rent hereunder 
due and payable with the next monthly installment of Fixed Rent, but the 
making of such payment or the taking of such action by Landlord shall not 
operate to cure such default by Tenant or to estop Landlord from the pursuit 
of any remedy to which Landlord would otherwise be entitled.

18.  TENANT'S REMEDIES.  In the event of breach or threatened breach by 
Landlord of any provision of this Lease, Tenant shall have the right of 
injunction and the right to invoke any remedy allowed at law or in equity in 
addition to other remedies provided for herein.

19.  ESTOPPEL CERTIFICATE.  Tenant shall, at any time and from time to time, 
at the request of Landlord, upon ten (10) business days notice, execute and 
deliver to Landlord a certificate in the form of Exhibit "G" attached hereto 
or some other reasonable form supplied by Landlord, it being intended that 
any such certificate delivered pursuant hereto may be relied upon by others 
with whom Landlord may be dealing.

20.  HOLDING OVER.  If Tenant retains possession of Building 3 or any part 
thereof after the termination of this Lease by expiration of the Lease Term 
or otherwise, in the absence of any written agreement between Landlord and 
Tenant concerning any such continuance of the Lease Term, Tenant shall pay 
Landlord (i) an amount, calculated on a per diem basis for each day of such 
unlawful retention, equal to the greater of (a) 150% the Annual Fixed Rent in 
effect immediately prior to the expiration or earlier termination of the 
Lease Term, or (b) the market rental for Building 3, as determined by 
Landlord, for the time Tenant thus remains in possession, plus, in each case, 
all Additional Rent and other sums payable hereunder.  Without limiting any 
rights and remedies of Landlord resulting by reason of the wrongful holding 
over by Tenant, or creating any right in Tenant to continue in possession of 
Building 3, all Tenant's obligations with respect to the use, occupancy and 
maintenance of Building 3 shall continue during such period of unlawful 
retention.

21.  SURRENDER OF BUILDING 3.  Tenant shall, at the expiration or earlier 
termination of this Lease, promptly surrender Building 3 in good order and 
condition and in conformity with the applicable provisions of this Lease, 
excepting only reasonable wear and tear and casualty.  Any of Tenant's Owned 
Property which shall remain in Building 3 after the expiration or earlier 
termination of this Lease shall be deemed to have been abandoned and either 
may be retained by Landlord as Landlord's property or may be disposed of in 
such manner as Landlord may see fit, provided that, notwithstanding the 
foregoing, Tenant shall, upon request of Landlord made prior to or within a 
reasonable period after the expiration or earlier termination of this Lease, 
promptly remove from Building 3 any such Tenant's Owned Property at Tenant's 
sole cost and expense.  Should Tenant fail to do so, Landlord may do so, and 
the cost and expense thereof, together with interest at the Default Rate from 
the date such costs and expenses are incurred by Landlord, shall be paid by 
Tenant to Landlord as "Additional Rent" within fifteen (15) days after Tenant 
is billed therefor.  If such Tenant's Owned Property or any part thereof 
shall be sold by Landlord, Landlord may receive and retain the proceeds of 
such sale as Landlord's property.

22.  SUBORDINATION, ATTORNMENT AND NONDISTURBANCE.

     22.1.     This Lease and the estate, interest and rights hereby created 
are subordinate to any mortgage now or hereafter placed upon Building 3 or 
the Land or any estate or interest therein, including, without limitation, 
any mortgage on any leasehold estate, and to all renewals, modifications, 
consolidations, replacements and extensions of same as well as any 
substitutions therefor.  Tenant agrees that in the event any person, firm, 
corporation or other entity acquires the right to possession of Building 3 or 
the Land, including any mortgagee or holder of any estate or interest having 
priority over this Lease, Tenant shall, if requested by such person, firm, 
corporation or other entity, attorn to and become the tenant of such person, 
firm, corporation or other entity, upon the same terms and conditions as are 
set forth herein for the balance of the Lease Term.  Notwithstanding the 
foregoing, any mortgagee may, at any time, subordinate its mortgage to this 
Lease, without Tenant's consent, by notice in writing to Tenant, and 
thereupon this Lease shall be deemed prior to such mortgage without regard to 
their respective dates of execution and delivery, and in that event, such 
mortgagee shall have the same rights with respect to this Lease as though it 
had been executed prior to the execution and delivery of the mortgage.  
Tenant, if requested by Landlord, shall execute such instruments in 
recordable form as may reasonably be required by Landlord in order to confirm 
or effect the subordination or priority of this Lease, as the case may be, 
and the attornment of Tenant to future landlords in accordance with the terms 
of this Section.

     22.2.     With respect to any existing lease, estate, interest and/or 
mortgage, no later than the date sixty (60) days after Tenant executes and 
delivers this Lease, and with respect to any future lease, estate and/or 
mortgage, on or before the effective date thereof, Landlord shall obtain from 
its lessor and/or mortgagee, as the case may be, a written agreement with 
Tenant in a form substantially in conformity with the form attached hereto as 
Exhibit "M", which agreement shall be binding on their respective legal 
representatives, successors and assigns and shall provide, among other 
provisions, that so long as this Lease shall be in full force and effect (a) 
Tenant shall not be joined as a defendant in any proceeding which may be 
instituted to terminate or enforce the lease or to foreclose or enforce the 

                                       8
<PAGE>


mortgage, and (b) Tenant's possession and use of Building 3 in accordance 
with the provisions of this Lease shall not be affected or disturbed by 
reason of the subordination to or any modification of or default under the 
ground or underlying lease or mortgage.  If such lessor and/or mortgagee or 
any successor -in-interest shall succeed to the rights of Landlord under this 
Lease, whether through possession, surrender, assignment, subletting, 
judicial or foreclosure action, or delivery of a deed or otherwise, Tenant 
will attorn to and recognize such successor-landlord as Tenant's landlord and 
the successor-landlord will accept such attornment and recognize Tenant's 
rights of possession and use of Building 3 in accordance with the provisions 
of this Lease.  This clause shall be self-operative and no further instrument 
of attornment or recognition shall be required.

23.  BROKERS.  The parties agree that Buschman/Jackson-Cross, Inc. (the 
"Broker") and Cushman and Wakefield, Inc. (the "Cooperating Broker") are the 
real estate broker and cooperating broker, respectively, who have brought the 
parties together in connection with the transactions contemplated hereby and 
that Landlord shall be responsible for all brokerage commissions to be paid 
to Broker and Cooperating Broker on the terms and conditions set forth in a 
separate agreement between Landlord and Broker. Each party represents and 
warrants to the other that he, she or they have not made any agreement or 
taken any action which may cause anyone (other than Broker or Cooperating 
Broker) to become entitled to a commission as a result of the transactions 
contemplated by this Lease, and each will indemnify and defend the other from 
any and all claims, actual or threatened, for compensation by any such third 
person (other than Broker or Cooperating Broker) by reason of such party's 
breach of his, her or their representation or warranty contained in this 
Section.

24.  NOTICES.  All notices or other communications hereunder shall be in 
writing and shall be sent to the address of the party for whom such notice is 
intended as set forth below (or to such other address as a party may 
hereafter designate for itself by notice to the other party as required 
hereby).  Any such notice or communication shall be sufficient if sent by 
registered or certified mail, return receipt requested, postage prepaid, by 
prepaid overnight delivery service, or by hand delivery.  Any such notice or 
communication shall be deemed to have been given: if hand delivered, then 
when delivered or when such delivery is refused; if sent by an overnight 
delivery service, then on the day following the day deposited with such 
service; or if sent by registered or certified mail, then on the third 
business day following the date deposited in the United States mails.  All 
notices and communications to Tenant may also be given by leaving same at 
Building 3 during the hours set forth in Section 8 hereof.

     24.1.     If to Landlord:

                              South Brunswick Investors, L.P.
                              c/o South Brunswick Investment Company, L.L.C.
                              Suite 1105, One Logan Square
                              Philadelphia, PA  19103
                              Attention:  Clay W. Hamlin, III

                              With a required copy to:
     
                              Saul, Ewing, Remick & Saul
                              3800 Centre Square West
                              Philadelphia, PA  19102
                              Attention:  F. Michael Wysocki, Esquire

     Notice to mortgagees:    All notices by Tenant to Landlord relating to any
                              default by Landlord under this Lease must also  be
                              given by Tenant to the holders of any mortgage on
                              the Land and/or Building 3 of which Tenant has
                              notice.

     24.2.     If to Tenant:

                              Teleport Communications Group Inc.
                              One Teleport Drive
                              Staten Island, NY  10311
                              Attention:  General Counsel

                              With a required copy to:

                              Teleport Communications Group Inc.
                              One Teleport Drive
                              Staten Island, NY  10311
                              Attention: S.V.P. Engineering

                              Teleport Communications Group Inc.
                              One Teleport Drive
                              Staten Island, NY  10311
                              Attention: Controller

25.  [INTENTIONALLY OMITTED]

26.  [INTENTIONALLY OMITTED]

27.  [INTENTIONALLY OMITTED]

28.  RENEWAL TERMS.  Tenant shall have the option to extend the term of this 
Lease for Building 3 for two consecutive five-year terms (each a "Renewal 
Term"), on the same terms and conditions as set forth herein except that (i) 
Tenant shall be entitled to a Tenant Allowance at the commencement of each 
Renewal Term equal to Ten Dollars ($10) per square foot included in Building 
3, and (ii) Tenant shall not be entitled to any further Renewal Terms after 
the second Renewal Term.  The Annual Fixed Rent during each Renewal Term is 
set forth in Exhibit "B" hereto.  Each option to extend shall be exercised by 
written notice to Landlord given at least 270 days prior to the then-current 
expiration  date for the Term.  Notwithstanding anything herein to the 
contrary, the term shall not be extended if Tenant is in default under the 
terms of this Lease on the date which is 270 days prior to the commencement 
of a Renewal Term.  As used in this Lease, the word "Term" and the words 
"term of this Lease" shall mean the initial Lease Term, any extensions 
pursuant to Section 27 and any Renewal Terms which may become effective.

                                       9
<PAGE>

29.  SIGNS.

     29.1.     So long as Tenant shall lease Building 3, it shall have the 
right, upon Landlord's approval, to (1) name Building 3, and (2) design and 
designate the location of signs naming Building 3, including such locations 
on the facade of Building 3, and (3) install such signs.

     29.2.     Neither Tenant nor Landlord shall install or permit 
installation of any signs, sculptures and/or graphics which adversely reflect 
on the dignity or character of the Project as a first-class office Project.

30.  PARKING.

     30.1.     (a)  Landlord shall, at its expense, provide Tenant with 99 
self-parking spaces within the Building Parking Area and Visitors Parking 
Area (collectively, the "Parking Areas") for Tenant's use.  The Parking Areas 
are shown on Exhibit "K".  The Parking Areas shall be available for use 
twenty-four (24) hours a day, every day of the year during the term of this 
Lease and shall be illuminated when necessary to maintain a safe environment. 
 Further, Landlord shall, at its expense, keep and maintain the Parking Areas 
in a clean, safe and first-class condition.

          (b)  If Tenant, its employees, licensees or guests are not able to 
use the Parking Areas and access ways thereto because of unauthorized use 
thereof by others, Landlord shall take whatever steps are necessary to end 
and prevent further unauthorized use including, if appropriate, posting 
signs, distributing parking stickers and towing away unauthorized vehicles.

     30.2.     Landlord shall reserve (as a component of the spaces allocated 
to Tenant pursuant to Section 29.1) at least three (3) parking spaces in the 
Visitors Parking Area, for use by invitees of Tenant.  These parking spaces 
shall be designated for transient use, and Landlord shall take reasonable 
steps to see that these parking spaces are available for such use at all 
times.

31.  ARBITRATION.

     31.1.     If arbitration is agreed upon hereunder as a dispute 
resolution procedure, the arbitration shall be conducted as provided in this 
Section.  All proceedings shall be conducted according to the Commercial 
Arbitration Rules of the American Arbitration Association, except as 
hereinafter provided.  No action at law or in equity in connection with any 
such dispute shall be brought until arbitration hereunder shall have been 
waived, either expressly or pursuant to this Section.  The judgment upon the 
award rendered in any arbitration hereunder shall be final and binding on 
both parties hereto and may be entered in any court having jurisdiction 
thereof.

     31.2.     During an arbitration proceeding pursuant to this Section, the 
parties shall continue to perform and discharge all of their respective 
obligations under this Lease, except as otherwise provided in this Lease.

     31.3.     All disputes that may be arbitrated in accordance with this 
Lease shall be raised by notice to the other party, which notice shall state 
with particularity the nature of the dispute and the demand for relief, 
making specific reference by section number and title of the provisions of 
this Lease alleged to have given rise to the dispute.  The notice shall also 
refer to this Section and shall state whether or not the party giving the 
notice demands arbitration under this Section.  If no such demand is 
contained in the notice, the other party against whom relief is sought shall 
have the right to demand arbitration under this Section within five (5) 
business days after such notice is received.  Unless one of the parties 
demands arbitration, the provisions of this Section shall be deemed to have 
been waived with respect to the dispute in question.

     31.4.     Tenant and Landlord shall mutually and promptly select one 
person who has demonstrated at least ten year's experience in commercial real 
estate matters and, in particular, the subject matter of the dispute, to act 
as arbitrator hereunder.  If a selection is not made within thirty (30) days 
after a demand for arbitration is made, upon the request of either party the 
arbitrator shall be appointed by  The American Arbitration Association.  The 
arbitration proceedings shall take place at a mutually acceptable location in 
New Jersey.

     31.5.     When resolving any dispute, the arbitrator shall apply the 
pertinent provisions of this Lease without departure therefrom in any 
respect.  The arbitrator shall not have the power to change any of the 
provisions of this Lease, but this Section shall not prevent in any 
appropriate case the interpretation, construction and determination by the 
arbitrator of the applicable provisions of this Lease to the extent necessary 
in applying the same to the matters to be determined by arbitration. The 
arbitrator shall limit his deliberations to the following issues only and no 
others:

          (i)  resolution of those disputes expressly agreed in this Lease to be
               subject to submission to arbitration, and

          (ii) whether an item included in Landlord Statement as Operating
               Expenses or Real Estate Taxes is properly includable pursuant to
               Exhibit "C".

32.  ADDITIONAL RIGHTS OF TENANT.

     32.1.     So long as Tenant shall lease space on the Project under 
either this Lease, the First Lease, or any lease executed hereafter, Tenant 
shall be permitted to install and maintain a generator on the existing pad on 
the Land, in the location depicted on Exhibit "K".  Tenant shall repair any 
damage to the pad site which results from the installation or maintenance of 
such generator.  Tenant shall during such period also have exclusive use of 
an existing fuel tank, located in the location on the Land depicted on 
Exhibit "K".  Tenant shall maintain the fuel tank and keep it in good repair 
and condition.

     32.2.     Tenant may install a generator plug on the outside wall of 
Building 3 to accommodate a mobile generator.

     32.3.     Tenant shall be permitted to install four (4) 6" conduits from 
the street or the First Space to Building 3.

     32.4.     Tenant shall have the right to contact other tenants within 
the Project regarding sales of Tenant's telecommunication services.

     32.5.     Landlord grants to Tenant the license and right during the 
term of this Lease (i) to utilize space and conduits which exist on the Land 
and in Building 3 during the term of this Lease for the purpose of using 
existing risers and conduit and/or installing conduit (in the event existing 
conduit space is insufficient), (ii) to install cable in, across and through 
such risers and conduit, and (iii) to make connections to all electrical and 
mechanical closets as necessary for the use of such cable for the purposes of 
connection of Tenant's equipment and facilities within Building 3 to Tenant's 
telecommunication system network outside Building 3 and connection of 
Tenant's equipment and facilities in Building 3 to other tenant premises.  
The location of such risers and conduit shall be designated by Landlord in 
its reasonable discretion.  The method of installation of conduit or cable 
shall be subject to the prior approval of Landlord, which approval 

                                       10
<PAGE>


shall not be unreasonably withheld or delayed.  Tenant shall be responsible 
for maintaining any conduit and cable which is used solely by Tenant at its 
cost.

     32.6.     Prior to exercising any rights under this Section, Tenant 
shall provide Landlord with plans and specifications detailing Tenant's 
plans, which plans and specifications shall be subject to Landlord's 
approval, which approval shall not be unreasonably withheld or delayed, 
provided, however, that such approval may be subject to reasonable conditions 
including, without limitation, that Tenant be required to pay for any 
out-of-pocket cost to Landlord occasioned thereby.  Tenant shall bear all 
costs incurred in the exercise of its rights set forth above shall exercise 
these rights in full compliance with all applicable governmental laws, 
regulations and rules (including without limitation the obtaining of all 
required permits) or any other requirements reasonably imposed by Landlord.  
Tenant shall not, in the exercise of its rights under this Section, interfere 
with Landlord, other tenants at the Project and the operations of Building 3 
or the Project.  Tenant shall take all precautionary steps to protect its 
facilities and the facilities of other affected by performance of work and 
shall police same properly.  Tenant will replace or restore any disturbance 
or damage it caused to Building 3 or other improvements at the Project.  Any 
alteration, additions or improvements constructed by Tenant in the course of 
exercising its rights under this Section shall be deemed to be Tenant 
Improvements.

     32.7.     Except as otherwise expressly provided herein, Tenant shall 
not be charged any amounts by Landlord for the enjoyment of the additional 
rights of Tenant set forth in this Section 32.

33.  BUILDING 3 SECURITY.  Tenant agrees that it shall, as part of the Tenant 
Work, install a security system in Building 3 providing for card key access.  
At such time as any tenant other than Tenant shall lease any portion of 
Building 3, Tenant shall, at its sole cost and expense, modify the security 
system (if necessary) so as to provide separately controlled access into 
Building 3 for such other tenant.

34.  RESTRICTIONS ON OTHER TENANTS IN BUILDING 3.

     34.1.     In order to protect Tenant's trade secrets and confidential 
information and enhance security in Building 3, Landlord shall not assign 
this Lease to, any person or entity which, as a major part of its business, 
(1) leases or sells or otherwise trades in telecommunications products or 
services of the kind sold by Tenant, or (2) provides consulting services or 
advice in the use or application of such products or services.

     34.2.     Landlord shall include the foregoing prohibition in all leases 
which are executed after the date hereof and cover space in Building 3, and 
shall, in such leases, require the tenant thereunder to include the same in 
all subleases and assignments executed after the date hereof.

     34.3.     Landlord shall consult with Tenant before (i) leasing space in 
Building 3 to any tenant, (ii) approving any subtenant or assignee of any 
tenant in the Building 3, or (iii) making any other commitment which may 
violate this Section.

35.  MISCELLANEOUS.

     35.1.     The obligations of this Lease shall be binding upon and inure 
to the benefit of the parties hereto and their respective successors and 
assigns; provided that Landlord and each successive owner of Building 3 
and/or the Land shall be liable only for obligations accruing during the 
period of its ownership or interest in Building 3, and from and after the 
transfer by Landlord or such successive owner of its ownership or other 
interest in Building 3, Tenant shall look solely to the successors in title 
for the performance of Landlord's obligations hereunder arising thereafter.

     35.2.     No delay or forbearance by Landlord in exercising any right or 
remedy hereunder or in undertaking or performing any act or matter which is 
not expressly required to be undertaken by Landlord shall be construed, 
respectively, to be a waiver of Landlord's rights or to represent any 
agreement by Landlord to undertake or perform such act or matter thereafter.

     35.3.     TENANT HEREBY CONSENTS TO THE EXCLUSIVE JURISDICTION OF THE 
COURTS OF THE STATE WHERE BUILDING 3 IS LOCATED AND IN ANY AND ALL ACTIONS OR 
PROCEEDINGS ARISING HEREUNDER OR PURSUANT HERETO.  LANDLORD AND TENANT AGREE 
TO WAIVE TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM BROUGHT BY 
EITHER OF THE PARTIES HERETO AGAINST THE OTHER ON ANY MATTER WHATSOEVER 
ARISING OUT OF OR IN ANY WAY CONNECTED WITH THIS LEASE, THE RELATIONSHIP OF 
LANDLORD AND TENANT AND/OR TENANT'S USE OF OR OCCUPANCY OF BUILDING 3.  IT IS 
FURTHER MUTUALLY AGREED THAT IN THE EVENT LANDLORD COMMENCES ANY SUMMARY 
PROCEEDING FOR NON-PAYMENT OF RENT, TENANT WILL NOT INTERPOSE ANY 
COUNTERCLAIM OF WHATEVER NATURE OR DESCRIPTION IN ANY SUCH PROCEEDING, UNLESS 
TENANT CANNOT BRING SEPARATE ACTION.

     35.4.     Tenant shall look solely to Building 3 and rents derived 
therefrom for enforcement of any obligation hereunder or by law assumed or 
enforceable against Landlord, and no other property or other assets of 
Landlord shall be subjected to levy, execution or other enforcement 
proceeding for the satisfaction of Tenant's remedies or with respect to this 
Lease, the relationship of landlord and tenant hereunder or Tenant's use and 
occupancy of Building 3.

     35.5.     All times, wherever specified herein for the performance by 
Landlord or Tenant of their respective obligations hereunder, are of the 
essence of this Lease.

     35.6.     Each covenant and agreement in this Lease shall for all 
purposes be construed to be a separate and independent covenant or agreement. 
 If any provision in this Lease or the application thereof shall to any 
extent be invalid, illegal or otherwise unenforceable, the remainder of this 
Lease, and the application of such provision other than as invalid, illegal 
or unenforceable, shall not be affected thereby; and such provisions in this 
Lease shall be valid and enforceable to the fullest extent permitted by law.

     35.7.     This Lease, including all Exhibits hereto, each of which is 
incorporated in this Lease, contains the entire agreement between the parties 
hereto, and shall not be amended, modified or supplemented unless by 
agreement in writing signed by both Landlord and Tenant, except as 
specifically provided for herein.

     35.8.     The title and headings and table of contents of this Lease are 
for convenience of reference only and shall not in any way be utilized to 
construe or interpret the agreement of the parties as otherwise set forth 
herein.  The term "Landlord" and term "Tenant" as used herein shall mean, 
where appropriate, all persons acting by or on behalf of the respective 
parties, except as to any required approvals, consents or amendments, 
modifications or supplements hereunder when such terms shall only mean the 
parties originally named on the first page of this Lease as Landlord and 
Tenant, respectively, and their agents so authorized in writing.

     35.9.     If Tenant is a corporation or a limited liability company, 
each person signing this Lease on behalf of Tenant represents and warrants 
that he/she has full authority to do so and that this Lease is fully and 
completely binding on the corporation or limited liability 

                                       11

<PAGE>

company.  If at any time during the Lease Term hereunder, or any extension or 
renewal thereof, Tenant shall change its corporate or company name, by 
operation of law or otherwise, Tenant shall deliver to Landlord a copy of a 
certificate of name change filed with the state of Tenant's jurisdiction 
evidencing such name change, or such other evidence of Tenant's name change 
and authority as is reasonably acceptable to Landlord.  Such evidence shall 
be delivered to Landlord within sixty (60) days after Tenant's official name 
change.  If Tenant is a general partnership, limited partnership or limited 
liability partnership, each person or entity signing this Lease for Tenant 
represents that he/she or it has full authority to sign for the partnership 
and that this Lease is completely and fully binding on the partnership and 
all general partners of the partnership.  Tenant shall give written notice to 
Landlord of any general partner's withdrawal or addition and, in the event of 
a name change of the partnership, the same conditions regarding a name change 
of a corporate or limited liability company Tenant, as stated above, shall 
apply.

     35.10.    This Lease shall be governed by and construed in accordance 
with the laws of the State of New Jersey.

     35.11.    Within ten (10) days after receipt, Landlord and Tenant shall 
advise the other party in writing, and provide the other with copies of (as 
applicable), any notices alleging violation of the Americans with 
Disabilities Act of 1990 ("ADA") relating to any portion of Building 3; any 
claims made or threatened in writing regarding noncompliance with the ADA and 
relating to any portion of Building 3; or any governmental or regulatory 
actions or investigations instituted or threatened regarding noncompliance 
with the ADA and relating to any portion of Building 3.

     35.12.    If Tenant is comprised of more than one signatory, each 
signatory shall be jointly and severally liable with each other signatory for 
payment and performance according to this Lease.

     35.13.    Any covenants set forth in this Lease which, by their nature, 
would reasonably be expected to be performed after the expiration or earlier 
termination of this Lease, shall survive the expiration or earlier 
termination of this Lease.

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement of 
Lease to be executed on the day and year first above written.

                              LANDLORD:

                              SOUTH BRUNSWICK INVESTORS, L.P., a Delaware
                              limited partnership

                                 By:  South Brunswick Investment Company, L.L.C.



                                 By:______________________________________

                                 Name:____________________________________

                                 Title:___________________________________


                              TENANT:

                              TELEPORT COMMUNICATIONS GROUP INC.



                              By:________________________________________

                              Name: _____________________________________

                              Title: ____________________________________


                                       12

<PAGE>

                                     EXHIBIT "A"

                               PLAN OF DEMISED PREMISES

































<PAGE>

                                    EXHIBIT "B"
                                          
                                   RENT SCHEDULE
                                          
                                          
                                          
                                          
                                          
                                          
                                          
                                          
                                          
                                          
                                          
                                          
                                          
<PAGE>

                                    EXHIBIT "C"

                 TAXES, OPERATING EXPENSE AND OTHER ADDITIONAL RENT

1.   Taxes.

     A.   Definitions

          I.   "ADJUSTED TAXES" shall mean the Taxes for any Tax Year, plus the
               expenses of any contests (administrative or otherwise) of tax
               assessments or proceedings for refunds incurred during such Tax
               Year. If Landlord is successful in obtaining a refund for any Tax
               Year(s), the Adjusted Taxes for the Tax Year(s) to which such
               refund is applicable shall be recalculated to reflect the amount
               of the refund received by Landlord, and Tenant shall receive a
               credit, if appropriate, equal to the amount of the difference
               between the Tax Adjustment which was actually paid by Tenant and
               the Tax Adjustment which actually is due, taking into account
               the amount of the refund.

          II.  "TAX ADJUSTMENT" shall have the meaning set forth in Subsection
               1B below.  

          III. "TAX ALLOWANCE" shall mean the actual Taxes for Tax Year 1997.

          IV.  "TAX ESTIMATE" shall have the meaning set forth in Subsection 1B
               below.

          V.   "TAX STATEMENT" shall mean a statement in writing signed by
               Landlord, setting forth (a) the Adjusted Taxes for the applicable
               Tax Year, (b) the Tax Allowance, (c) the Tax Adjustment payable
               for such Tax Year, or portion thereof, and (d) such other
               information as Landlord deems appropriate.

          VI.  "TAX YEAR" shall mean each calendar year, or such other period of
               twelve (12) months as hereafter may be duly adopted by the
               applicable governmental or quasi-governmental body or authority
               or special service district as its fiscal year for purposes of
               Taxes, occurring during the Lease Term.

          VII. "TAXES" shall mean all taxes, charges, impositions, levies,
               assessments and burdens of every kind and nature, whether general
               or special, ordinary or extraordinary, foreseen or unforeseen,
               assessed or imposed by any governmental or quasi-governmental
               body or authority or special service district on and/or with
               respect to the Land or the Buildings or their operation or the
               rents therefrom (including taxes based on gross receipts),
               whether or not directly paid by Landlord, subject to the
               following:

               (1)  there shall be excluded from Taxes all income taxes, excess
                    profit taxes, excise taxes, franchise taxes, estate,
                    succession, inheritance and transfer taxes; provided,
                    however, that if, due to a future change in the method of
                    taxation or assessment, any such tax, however designated,
                    shall be imposed in substitution, in whole or in part, for
                    (or in lieu of all or any part of any contemplated increase
                    in) any tax, charge, imposition, levy, assessment or burden
                    which would otherwise be included within the definition of
                    Taxes, such other tax shall be deemed to be included within
                    the definition of Taxes as defined herein to the extent of
                    such substitution or imposition in lieu; and 

               (2)  there shall be excluded from Taxes any use and occupancy
                    tax, which shall be paid by Tenant to the appropriate
                    governmental authority; provided, however, that Tenant shall
                    pay such use and occupancy tax to Landlord as Additional
                    Rent upon demand if Landlord is required by law to collect
                    such tax for any governmental authority, in which case
                    Landlord shall remit any amounts paid to Landlord to the
                    appropriate governmental authority.

          VIII. "TENANT'S PROPORTIONATE SHARE" shall mean a fraction, the 
                numerator of which shall be the rentable square feet of 
                Building 3, and the denominator of which shall be the 
                aggregate rentable square feet in the Buildings, and, 
                expressed as a percentage, shall be 15% (30,000/200,000). If 
                the rentable square feet of the Buildings increases or 
                decreases during any Operating Year or Tax Year, the rentable 
                square feet of the Buildings for purposes of determining the 
                numerator and/or denominator of the fraction shall be the 
                weighted average of the rentable square feet in the Buildings 
                for such Operating Year or Tax Year.

     B.   Payment of Tax Adjustment.  If the Adjusted Taxes for any Tax Year
          shall be in excess of the Tax Allowance, Tenant shall pay to Landlord
          as Additional Rent an amount equal to Tenant's Proportionate Share of
          such excess.  (The amount of Tenant's Proportionate Share of such
          excess is hereinafter referred to as the "Tax Adjustment".)  If the
          Commencement Date is any date other than the first day of a Tax Year
          or if the expiration date of the Lease Term is any date other than the
          last day of a Tax Year, the Tax Adjustment shall be allocated
          proportionately to the amount of time in such Tax Year that the Lease
          Term is in effect.

          Tenant shall pay to Landlord, on account of the Tax Adjustment for
          each Tax Year, monthly installments in advance equal to one-twelfth
          (1/12) of the estimated Tax Adjustment for such Tax Year (the "Tax
          Estimate"). Such installments shall be payable at such place as
          Landlord may direct. From time to time during any Tax Year, Landlord
          may furnish to Tenant the Tax Estimate for such Tax Year and, on the
          first day of the first month following the receipt of such Tax
          Estimate, in addition to the monthly installment of such new Tax
          Estimate, Tenant shall pay to Landlord (or Landlord shall credit to
          Tenant) any deficiency (or excess) between (i) the total of the
          installments paid on account of the Tax Adjustment for such Tax Year,
          and (ii) the product of one-twelfth (1/12) of such Tax Estimate for
          such Tax Year and the number of months which have elapsed during such
          Tax Year prior to the due date of such payment.  Until the Tax
          Estimate for any Tax Year is furnished by Landlord, Tenant shall
          continue to pay monthly installments on account of such Tax Year's Tax
          Adjustment based upon the last Tax Estimate provided by Landlord to
          Tenant. Following the end of each Tax Year, Landlord shall furnish to
          Tenant a Tax Statement.  On the first day of the first month following
          the receipt of such Tax Statement, Tenant shall pay to Landlord (or
          Landlord shall credit or refund to Tenant) any deficiency (or excess)
          between the installments paid on account of the preceding Tax Year's
          Tax Adjustment and the actual Tax Adjustment for such Tax Year.

          Notwithstanding the foregoing, Landlord from time to time during the
          Term may elect to waive the requirement for payment of monthly
          installments on account of the Tax Adjustment and, in such case,
          Tenant shall pay the full amount of any unpaid Tax Adjustment within
          fifteen (15) days after Tenant receives any Tax Statement.
          Furthermore, notwithstanding the foregoing, more than one (1) Tax
          Statement may be sent to Tenant during any Tax Year. Such 


                                         C-1

<PAGE>


          election by Landlord shall not preclude Landlord from thereafter
          requiring Tenant to commence paying monthly installments on account of
          the Tax Adjustment as set forth above.

     C.   Tax Contest.

          In consideration of Tenant's undertaking to reimburse Landlord for
          Tenant's Share of an increase in Real Estate Taxes, Tenant shall have
          the right, by appropriate proceedings, to protest any assessment or
          reassessment or any special assessment, or any change in the tax rate,
          or the validity of any of the above. During the pendency of any
          protest, Landlord shall be permitted to continue to pay any disputed
          taxes and Tenant shall continue to reimburse Landlord in accordance
          with the provisions of Section 1(B) above.

          Landlord shall notify Tenant in writing of all assessments and the tax
          rates and any proposed changes to them.  Tenant shall notify Landlord
          in writing within fifteen (15) business days after receipt of
          Landlord's notice if Tenant wants to file a protest.  If Landlord
          receives written notice of a change in assessment and fails to give
          notice to Tenant of such change and, as a result, Tenant is unable
          to review the change, and if it so desires, to files a protest, Tenant
          shall not be obligated to reimburse Landlord for any increase in Real
          Estate Taxes resulting therefrom.

          In the tax proceedings, Tenant may act in its own name and/or the name
          of Landlord and Landlord will, at Tenant's request and provided
          Landlord is not put to any expense thereby, cooperate with Tenant in
          any way Tenant may reasonably require in connection with such protest.
          Any protest conducted by Tenant hereunder shall be at Tenant's expense
          and if interest or late charges become payable with respect to the
          Real Estate Taxes as a result, Tenant shall reimburse Landlord for the
          same.  However, Landlord shall be solely responsible for any
          penalties, interest or late charges imposed on Landlord through no
          fault of Tenant.

          Tenant shall be responsible for posting any security and/or paying any
          fees required in connection with any protest initiated by Tenant.

          Landlord agrees to keep Tenant apprised of all tax protest filings and
          proceedings undertaken by Landlord or others to obtain a tax reduction
          or refund.  Landlord may deduct from the total refund any reasonable
          attorneys' fees and other reasonable expenses incurred by Landlord
          therefor.  However, if the refund or reduction resulted from Tenant's
          efforts, Landlord shall also reimburse Tenant for reasonable
          attorneys' fees and any other reasonably expenses incurred by Tenant
          in connection with the protest, such reimbursement not to exceed
          Tenant's Proportionate Share of the refund or reduction.

2.   Operating Expense.

     A.   Definitions. 

          I.   "ESSENTIAL CAPITAL IMPROVEMENT" shall mean (a) a labor saving
               device, energy saving device or other installation, improvement
               or replacement which is intended to reduce Operating Expense,
               whether or not voluntary or required by governmental mandate, or
               (b) an installation or improvement required by reason of any law,
               ordinance or regulation which was not applicable to the Buildings
               on the date of the execution of this Lease, or (c) an
               installation or improvement intended to improve the health or
               safety of tenants in the Buildings generally, whether or not
               voluntary or required by governmental mandate.

          II.  "OPERATING EXPENSE" shall mean all costs and expenses of whatever
               kind or nature paid or incurred by Landlord from time to time in
               connection with the ownership, management, maintenance,
               operation, replacement, restoration and repair of the Buildings
               and the Land, all computed on the accrual basis, including,
               without limitation, the following items:

               (a)  gas, oil, electricity, steam, fuel, water, sewer and other
                    utility charges (including surcharges) of whatever nature
                    (excepting electricity charges for usage by tenants for
                    which any such tenant is billed separately), including,
                    without limitation, the proportion of costs (including but
                    not limited to oil, gas and electricity, repairs and
                    personnel) of the central heating and air conditioning plant
                    located on Lot 2 allocable to the provision of services to
                    the Buildings;

               (b)  insurance premiums and the amounts of any deductibles paid
                    by Landlord;

               (c)  on-site building personnel costs, including, but not limited
                    to, salaries, wages, fringe benefits, taxes, insurance and
                    other direct and indirect costs;

               (d)  costs of service and maintenance contracts including, but
                     not limited to, standard trash removal, cleaning and
                     security services;

               (e)  Landlord's share, as owner of Lot 2, of costs relating to
                    maintenance and operation of the Project which are shared 
                    and allocated among owners of lots comprising the Project;

               (f)  all other maintenance, preventive maintenance, painting,
                    repair, restoration and replacement expenses (including, but
                    not limited to, all of Landlord's repairs in Section 8), and
                    the cost of materials, supplies and uniforms;

               (g)  the cost of an on-site office and segregated storage area
                    for Landlord's parts, tools, supplies;

               (h)  all professional fees incurred in connection with the
                    operation of the Buildings;

               (i)  management fees payable to the managing agent, provided that
                    such management fees shall not exceed 2% of annual fixed and
                    additional rent payable by all tenants of the Buildings;

               (j)  sales and use taxes and any taxes imposed on personal
                    property owned by Landlord and used in connection with the
                    Buildings and taxes on any of the expenses which are
                    included in Operating Expense; 

               (k)  decorations for the lobby and other public portions of the
                    Buildings;

                                         C-2

<PAGE>



               (l)  all costs and expenses of maintaining (including snow 
                    removal), repairing and replacing paving, curbs, walkways,
                    driveways, roadways and landscaping; and

               (m)  the annual amortization of any Essential Capital Improvement
                    made by Landlord, computed based on the useful life of the
                    improvement with interest at the prime rate referenced in 
                    Section 3 of the Lease determined as of the date of 
                    completion of such Essential Capital Improvement.  If 
                    Landlord shall lease such Essential Capital Improvement, 
                    then the rentals or other operating costs paid pursuant to 
                    such lease shall be included in Operating Expense for each 
                    Operating Year in which they are incurred.

               Notwithstanding the foregoing, Operating Expense shall not 
               include the following:  

               (i)  costs to prepare space for occupancy by a new tenant; 

               (ii) costs of capital improvements (except for costs of any 
                    Essential Capital Improvement); 

              (iii) advertising expenses and leasing commissions; 

               (iv) any cost or expenditure for which Landlord is reimbursed, 
                    whether by insurance proceeds or otherwise, but not 
                    including costs and expenditures for which Landlord is 
                    reimbursed by tenants of the Buildings pursuant to 
                    operating expense reimbursement provisions; 

               (v)  legal expenses of negotiating and enforcing leases; 

               (vi) special cleaning or other services not offered to all 
                    tenants of the Buildings; 

              (vii) any charge for depreciation, interest or rental (except as
                    set forth above with respect to any Essential Capital
                    Improvement); 

             (viii) the cost of removal of asbestos-containing material not
                    related to the repair, maintenance or restoration of
                    equipment, as referred to in Section 8; 

               (ix) salaries of Landlord's officers and partners and its 
                    headquarters staff; 

               (x)  the cost of any repair made in accordance with Sections 11 
                    or 12 of this Lease, except to the extent such cost is not 
                    reimbursed by insurance; 

               (xi) any costs representing an amount paid to an affiliated 
                    person of Landlord which is in excess of the amount which 
                    would have been paid in the absence of such relationship; 
                    and

              (xii) any expenses of repairs or maintenance which are covered by
                    warranties, guarantees or service contracts (excluding any
                    mandatory deductibles).

               In determining Operating Expense for any Operating Year, if the
               Buildings were less than fully occupied during such entire year,
               or were not in operation during such entire year, then Operating
               Expense shall be adjusted by Landlord to reflect the amount that
               such expenses would normally be expected to have been, in the 
               reasonable opinion of Landlord, had the Buildings been fully 
               occupied and operational throughout such year, except that in no
               event shall such adjustment result in the recovery by Landlord of
               an amount in excess of the actual Operating Expense.  In 
               addition, if Landlord is not furnishing any particular work or 
               service (the cost of which, if performed by Landlord, would 
               constitute an Operating Expense) to a tenant who has undertaken
               to perform such work or service in lieu of performance by
               Landlord, Operating Expense shall nevertheless be deemed to 
               include the amount Landlord would reasonably have incurred if 
               Landlord had in fact performed the work or service at its 
               expense.

          III. "OPERATING EXPENSE ADJUSTMENT" shall have the meaning set forth 
               in Subsection 2B below.  

          IV.  "OPERATING EXPENSE ALLOWANCE" shall mean the actual Operating 
               Expense for Operating Year 1997, adjusted as set forth above.

          V.   "OPERATING EXPENSE ESTIMATE" shall have the meaning set forth in
               Subsection 2B below.

          VI.  "OPERATING EXPENSE STATEMENT" shall mean a statement in writing 
               signed by Landlord, setting forth in reasonable detail (a) the 
               Operating Expense for the applicable Operating Year, (b) the 
               Operating Expense Allowance, (c) the Operating Expense Adjustment
               for such Operating Year, or portion thereof, and (d) such other 
               information as Landlord deems appropriate.

          VII. "OPERATING YEAR" shall mean each calendar year, or such other 
               period of twelve (12) months as hereafter may be adopted by 
               Landlord as its fiscal year for purposes of Operating Expense, 
               occurring during the Lease Term.

     B.   Payment of Operating Expense Adjustment.  If the Operating Expense 
          for any Operating Year shall be in excess of the Operating Expense 
          Allowance, Tenant shall pay to Landlord as Additional Rent an amount
          equal to Tenant's Proportionate Share (as defined in Subsection 1A of
          this Exhibit) of such excess.  (The amount of Tenant's Proportionate 
          Share of such excess is hereinafter referred to as the "Operating 
          Expense Adjustment".)  If the Commencement Date is any date other than
          the first day of an Operating Year or if the expiration date of the 
          Lease Term is any date other than the last day of an Operating Year,
          the Operating Expense Adjustment shall be allocated proportionately
          to the amount of time in such Operating Year that the Lease Term is in
          effect.  

          Tenant shall pay to Landlord, on account of the Operating Expense 
          Adjustment for each Operating Year, monthly installments in advance 
          equal to one-twelfth (1/12) of the estimated Operating Expense 
          Adjustment for such Operating Year  (the "Operating Expense 
          Estimate").  Such installments shall be payable at such place as 
          Landlord may direct.  From time to time during any Operating Year, 
          Landlord may furnish to Tenant the Operating Expense Estimate for 
          such Operating Year and, on the first day of the first month 
          following receipt of such Operating Expense Estimate, in addition 
          to the monthly installment of such new Operating Expense Estimate, 
          Tenant shall pay to Landlord (or 

                                         C-3

<PAGE>


          Landlord shall credit to Tenant) any deficiency (or excess) between 
          (i) the total of the installments paid on account of the Operating 
          Expense Adjustment for such Operating Year, and (ii) the product of 
          one-twelfth (1/12) of such Operating Expense Estimate for such 
          Operating Year and the number of months which have elapsed during 
          such Operating Year prior to the due date of such payment.  Until 
          the Operating Expense Estimate for any Operating Year is furnished 
          by Landlord, Tenant shall continue to pay monthly installments on 
          account of such Operating Year's Operating Expense Adjustment based 
          upon the last Operating Expense Estimate provided by Landlord to 
          Tenant.  Following the end of each Operating Year, Landlord shall 
          furnish to Tenant an Operating Expense Statement.  On the first day 
          of the first month following the receipt of such Operating Expense 
          Statement, Tenant shall pay to Landlord (or Landlord shall credit 
          or refund to Tenant) any deficiency (or excess) between the 
          installments paid on account of the preceding Operating Year's 
          Operating Expense Adjustment and the actual Operating Expense 
          Adjustment for such Operating Year.

          Tenant shall have the right, during regular business hours, to 
          inspect the books and records used by Landlord in calculating the 
          Operating Expense Adjustment for a particular Operating Year, upon 
          not less than thirty (30) days prior notice given any time within 
          two (2) years following Tenant's receipt of the Operating Expense 
          Statement for such year; provided, however, that Tenant shall make 
          all payments required hereunder without delay.  Unless Tenant shall 
          take written exception to any Operating Expense Statement within 
          sixty (60) days after the end of such two (2) year period (such 
          date, the "Exception Date"), such statement shall be final and 
          binding upon Tenant.  Tenant's inspection of Landlord's books and 
          records shall be performed by an employee or employees of Tenant or 
          by a reputable public accounting firm or real estate company.  
          Tenant agrees that all information obtained by Tenant or by those 
          performing such inspection on behalf of Tenant shall at all times 
          remain confidential, and Tenant further agrees to take such action 
          as is necessary to insure the continued confidentiality of all such 
          information.

          Landlord shall be permitted to adjust the Operating Expense 
          Adjustment for a particular Operating Year any time up to the 
          Exception Date relating to such Operating Year.  Thereafter, such 
          Operating Expense Statement shall be final and binding upon 
          Landlord. 

3.   Personal Property Taxes.  Tenant shall be responsible for all ad valorem 
     taxes on its personal property and on the value of the leasehold 
     improvements in Building 3 to the extent that the same exceed building 
     standard allowances (and if the taxing authorities do not separately 
     assess Tenant's leasehold improvements, Landlord may make a reasonable 
     allocation of imposition to such improvements). 

4.   Survival.  If, upon expiration or termination of this Lease for any 
     cause, the amount of any Additional Rent due under this Lease has not 
     yet been determined, an appropriate payment from Tenant to Landlord, or 
     refund from Landlord to Tenant, shall be made promptly after such 
     determination, and such obligation shall survive the expiration or 
     termination of this Lease.

5.   Adjustment of Fixed and Additional Rent.  At Tenant's option, to be 
     exercised not more than ninety (90) days prior to the Commencement Date, 
     Landlord agrees to enter into an amendment to this Lease so that the 
     Fixed Rent will be increased to incorporate Tenant's proportionate share 
     of increases in real estate taxes and operating expenses for the years 
     1997 through 2001.  To achieve this, the Fixed Rent for the period 
     commencing upon the Commencement Date will be increased by the sum of 
     (i) the Tax Adjustment for Tax Year 2001, and (ii) the Operating Expense 
     Adjustment for Operating Year 2001.  Additional Rent thereafter will be 
     computed utilizing (i) a Tax Allowance defined as the Adjusted Taxes for 
     Tax Year 2001, and (ii) an Operating Expense Allowance defined as the 
     Operating Expense for Operating Year 2001.  It is the intent of this 
     provision that the net income of the Landlord over the term of the Lease 
     not be reduced as a result of any of the foregoing adjustments.

                                         C-4
<PAGE>


                                     EXHIBIT "D"
                                          
                            SCHEDULE OF LANDLORD'S WORK


At no cost to Tenant, Landlord will:

     Remove asbestos as reasonably necessary to permit Tenant to complete the 
     Tenant Work. 

     Create ADA-mandated parking spaces, curb cuts and access grades for the
     disabled.

     Rehabilitate landscaping in courtyard and at main entry.

     Provide street number signage. 

<PAGE>

                                    EXHIBIT "E"
                                          
                             JANITORIAL SPECIFICATIONS
                                          
DAILY - Night time coverage Monday through Friday.

     1.   Office Areas

          a.   Empty all trash containers and waste baskets.
          b.   Replace all trash liners.
          c.   Empty all ashtrays and receptacles and wipe clean with damp 
               cloth.
          d.   Dust all uncluttered desktops, file cabinets, counters, sills
               and ledges.
          e.   Vacuum all carpeted traffic lanes.
          f.   Dust mop and spot mop tile floors.
          g.   Vacuum all entrance mats and runners.
          h.   Remove smudges and finger prints from all doors, door frames,
               partitions and switch plates.
          i.   Arrange all furniture neatly.
          j.   Wash and squeegee all entrance door glass, both sides.
          k.   Clean all entrance frames and ledges.
          l.   Highlight all lobbies, elevators, conference room and executive
               areas to maintain superior level of appearance.
          m.   Remove all trash in specifically designated area and dispose of
               in prescribed manner. 
          n.   Clean and polish all drinking fountains.
          o.   Remove finger prints and smudges and dust all sills and ledges.
          p.   Clean all coffee stations.
          q.   Clean chalkboards.
          r.   Provide shared use of day porter.

     2.   Restrooms

          a.   Clean and disinfect all restrooms.
          b.   Empty all waste containers.
          c.   Dry mop floor.
          d.   Fill all dispensers.
          e.   Spray disinfect all fixtures and urinals inside and outside.
          f.   Clean all toilet fixtures and urinals inside and outside.
          g.   Clean all sinks and counter tops.
          h.   Clean and polish all mirrors and brightwork.
          i.   Clean and polish outside of all waste containers.
          j.   Wash floor with disinfectant cleaner making sure all corners are
               cleaned.

WEEKLY

          a.   Vacuum and spot clean all carpets.
          b.   Wipe desks and telephones.
          c.   Sweep stairwells.

MONTHLY

          a.   Clean all ceramic tile walls.
          b.   Clean all diffusers, registers and Venetian blinds.
          c.   Wash interior glass, both sides.
          d.   Wash stairwell treads and landings.

SEMI-ANNUALLY

          a.   Clean outside of windows.
          b.   Damp wipe diffusers and vents.

ANNUALLY

          a.   Clean inside of windows.
          b.   Shampoo carpeted traffic lanes.
          c.   Strip and refinish resilient floors.
          d.   Clean vertical surfaces.
 

<PAGE>

                                    EXHIBIT "F"
                                          
                               RULES AND REGULATIONS
                                          
1.   DEFINITIONS.  Wherever in these Rules and Regulations the word "Tenant" 
is used, it shall be taken to apply to and include Tenant and its agents, 
employees, invitees, licensees, subtenants and contractors, and is to be 
deemed of such number and gender as the circumstances require.  The word 
"room" shall be taken to include the space covered by this Lease.  The word 
"Landlord" shall be taken to include the employees and agents of Landlord.

2.   CONSTRUCTION.  The streets, sidewalks, entrances, halls, passages, 
elevators, stairways and other common areas provided by Landlord shall not be 
obstructed by Tenant, or used by it for any other purpose than for ingress 
and egress.

3.   WASHROOMS.  Toilet rooms, water-closets and other water apparatus shall 
not be used for any purposes other than those for which they are constructed.

4.   GENERAL PROHIBITIONS.  In order to insure proper use and care of the 
Buildings, without Landlord's prior written consent, to be withheld or 
granted in Landlord's sole discretion, Tenant shall not:

          a.   Allow any sign, advertisement, notice or other marking to be 
affixed to the interior or exterior of the Buildings, other than any signs 
which are located within Building 3 and are not visible from outside of 
Building 3;

          b.   Make improper noises or disturbances of any kind;

          c.   Mark or defile elevators, water-closets, toilet rooms, walls,
windows, doors or any other part of the Buildings;

          d.   Place anything on the outside of the Buildings, including roof
setbacks, window ledges and other projections;

          e.   Use or place any curtains, blinds, drapes or coverings over any
windows or upon the window surfaces which are visible from the outside of 
Building 3; 

          f.   Other than in connection with normal office decoration, fasten 
any article, drill holes, drive nails or screws into the walls, floors, 
woodwork, window mullions, or partitions; nor shall the same be painted, 
papered or otherwise covered or in any way marked or broken;

          g.   Interfere with the heating or cooling apparatus;

          h.   Allow anyone but Landlord's employees to clean rooms;

          i.   Leave Building 3 without locking doors, stopping all office 
machines (other than those machines required to be operated at all times), 
and extinguishing all lights;

          j.   Install any shades, blinds, or awnings;

          k.   Use any electrical heating device;

          l.   Install call boxes or any kind of wire in or on the Buildings;

          m.   Manufacture any commodity, or prepare to dispense any foods or 
beverages, whether by vending or dispensing machines or otherwise (other than 
as may be permitted in any kitchenette/vending area(s) located within 
Building 3 for use by Tenant's employees), or alcoholic beverages, tobacco, 
drugs, flowers, or other commodities or articles;

          n.   Secure duplicate keys for rooms, except from Landlord, or 
change the locks of any doors to or in Building 3;

          o.   Give its employees or other persons permission to go upon the 
roofs of the Buildings; or

          p.   Place door mats in public corridors.

5.   PUBLICITY.  Tenant shall not use the names of the Buildings or the 
Princeton Technology Center in any way in connection with its business except 
as the address thereof.  Landlord also shall have the right to prohibit any 
advertising by Tenant which, in Landlord's opinion, tends to impair the 
reputation of the Buildings or the Princeton Technology Center or their 
desirability as buildings or locations for offices; and upon written notice 
from Landlord, Tenant shall refrain from or discontinue such advertising.

6.   BUSINESS MACHINES.  Business machines and mechanical equipment which 
cause vibration, noise, cold or heat that may be transmitted to any space 
outside Building 3 shall be placed and maintained by Tenant, at its sole cost 
and expense, in settings of cork, rubber or spring type vibration eliminators 
sufficient to absorb and prevent such vibration, noise, cold or heat.

7.   MOVEMENT OF EQUIPMENT.  Landlord reserves the right to designate the 
time when and the method whereby freight, small or large office equipment, 
furniture, safes and other like articles may be brought into, moved, or 
removed from the Buildings or rooms, and to designate the location for 
temporary disposition of such items.  In no event shall any of the foregoing 
items be taken from Tenant's space for the purpose of removing same from the 
Buildings, other than in the ordinary course of Tenant's business, without 
the express consent of both Landlord and Tenant.

8.   PUBLIC ENTRANCE.  Landlord reserves the right to exclude the general 
public from the Buildings upon such days and at such hours as in Landlord's 
judgment will be for the best interest of the Buildings and its tenants.

9.   RIGHTS RESERVED TO LANDLORD.  Without abatement or diminution in rent, 
Landlord reserves and shall have the following additional rights:

          a.   To change the name and/or street address of the Buildings;

          b.   To install and maintain a sign or signs on the exterior of the
Buildings;


                                         F-1

<PAGE>

          c.   To approve all sources furnishing sign painting and lettering, 
ice, drinking water, towels and toilet supplies, and other like services used 
in Building 3;

          d.   To make, either voluntarily or pursuant to governmental 
requirement, repairs, alterations or improvements in or to the Buildings or 
any part thereof and during alterations, to close entrances, doors, windows, 
corridors, elevators or other facilities, provided that such acts (except in 
emergencies) shall not unreasonably interfere with Tenant's use and occupancy 
of Building 3 as a whole;

          e.   If Tenant vacates all or any portion of Building 3 prior to 
the expiration of the Lease Term, to decorate, remodel, repair, alter or 
otherwise prepare all or such portion of Building 3, as applicable, for 
re-occupancy;

          f.   To constantly have pass keys to Building 3, which keys 
Landlord must secure at all times;

          g.   To grant to anyone the exclusive right to conduct any 
particular business or undertaking in the Buildings; and

          h.   To take any and all measures, including inspections, repairs, 
alterations, additions and improvements to the Buildings, as may be necessary 
or desirable in the operation of the Buildings, provided that such acts 
(except in emergencies) shall not unreasonably interfere with Tenant's use 
and occupancy of Building 3 as a whole.

Subject to the provisions hereof, Landlord may enter Building 3 and may 
exercise any or all of the foregoing rights hereby reserved without being 
deemed guilty of an eviction or disturbance of Tenant's use or possession and 
without being liable in any manner to Tenant.

10.  REGULATION CHANGE.  Landlord shall have the right to make such other and 
further reasonable Rules and Regulations, as in the judgment of Landlord, may 
from time to time be needful for the appearance, care and cleanliness of the 
Buildings, for the preservation of good order therein, and for the health and 
safety of the tenants and their visitors, provided that all such Rules and 
Regulations shall be enforced by Landlord in a nondiscriminatory fashion.  
Landlord shall not be responsible to Tenant for any violation of Rules and 
Regulations by any other tenant, but shall use reasonable efforts to enforce 
such compliance with the Rules and Regulations.

10.  CONFLICT WITH LEASE.  If the terms of this Exhibit shall be in conflict 
with the terms set forth in the body of the Lease, the terms set forth in the 
body of the Lease shall prevail.


                                         F-2

<PAGE>

                                     EXHIBIT "G"

                                       FORM OF
                      TENANT ESTOPPEL CERTIFICATE AND STATEMENT

                      _____________________
                             (Tenant)

     The undersigned (jointly and severally if more than one) hereby 
represents, warrants and certifies to _______________________________________ 
(the "Landlord") that it is the tenant and present occupant (the "Tenant") of 
certain premises (the "Demised Premises") comprising a portion of the real 
property and improvements in the buildings (the "Buildings") located at 
___________________________________ and that:

1.   Basic Lease Terms - The Demised Premises are more specifically described 
     in, and are leased under the provisions of, a lease agreement (the 
     "Lease"), the basic terms of which are described below:

     1.1. Demised Premises/Suite: _____________; Floor_______
     1.2. Rentable Square Feet of Demised Premises: _________
     1.3. Date of Lease: ____________________________________
     1.4. Commencement Date: _____________________________
     1.5. Expiration Date: __________________________________
     1.6. Current Annual/Monthly Fixed Rent: $_____ / $______
     1.7. Current Monthly Additional Rent: $_________________
     1.8. Total Monthly Rent As of            : $____________
     1.9. Tenant's Proportionate Share: ____________________%
     1.10.     Security Deposit: $________________________________
     1.11.     Total Rent Is Paid Through: _______________________

2.   MODIFICATIONS.  The Lease contains all of the understandings and agreements
     between Tenant and Landlord, and is in full force and effect, without
     modification, addition, extension, or renewal on the date hereof, except as
     indicated below:

     ___________________________________________________________________________

     ___________________________________________________________________________

3.   ACCEPTANCE OF DEMISED PREMISES.  Tenant has accepted possession of 
     Building 3 and is now in possession of same, and the improvements and space
     required to be furnished according to the Lease have been fully delivered 
     by Landlord and accepted by Tenant.

4.   OPTIONS.  There are no purchase options, rights of first refusal, rights of
     first offer, options to terminate, exclusive business rights, or other 
     rights in Tenant to extend or renew the Lease Term or to expand or 
     otherwise modify Building 3, except as indicated below:

     _______________________________________________________
     _______________________________________________________
     _______________________________________________________

5.   COMMENCEMENT OF RENTAL OBLIGATION.  Tenant's obligation to pay rent has
     commenced, unless indicated below: 
     _______________________________________ 
     _______________________________________________________________________

6.   Rent Payment.  No rent has been paid by Tenant in advance under the Lease,
     except for the Total Monthly Rent, as described above, that became due 
     for the current month.

7.   No Tenant Default.  Tenant is not in default under the Lease and is 
     current in the payment of any and all charges required to be paid by
     Tenant, except as indicated below:_______________________________

     _____________________________________________________________________

     __________________________________.

8.   SUBORDINATION AND ATTORNMENT.  In the event that Landlord's interest is
     conveyed or Landlord otherwise relinquishes possession of Building 3 to a
     third party, including but not limited to any mortgagee or successor in 
     interest to any such mortgagee, the undersigned agrees to attorn to such 
     third party and to recognize such third party as landlord.  Tenant agrees
     to subordinate to any mortgagee or successor in interest to any such 
     mortgagee as more fully set forth in the Lease.  Any such attornment or 
     subordination shall be effective and self-operative without the execution 
     of any other instrument by either party hereto but, upon the request of 
     such landlord, the undersigned shall execute and deliver an instrument 
     confirming such attornment or subordination.

9.   NO DEFENSE.  Tenant has no defenses, set-offs, basis for withholding of 
     rent, claims or counterclaims against Landlord for any failure of 
     performance of any of the terms of the Lease, nor to the best of Tenant's
     knowledge are there defaults or breaches by Landlord under the Lease, 
     including, without limitation, defaults relating to the design, condition
     and tenant uses of the Buildings.

10.  NO PRIOR ASSIGNMENT OR SUBLETTING.  Tenant has not assigned, pledged, 
     mortgaged or otherwise transferred or encumbered the Lease or the rental
     payments thereunder, nor sublet all or any part of Building 3 and is not
     presently permitting the same to be occupied or used by anyone other than
     Tenant except as indicated below:
     ___________________________________________________________________________
     _______________________________________________________________________.

11.  USE OF PREMISES.  Tenant has not accumulated, recycled, stored, treated,
     spilled, emitted, leaked or disposed of any hazardous, toxic or polluting
     substances or wastes at the property.  Tenant has not received notice from
     any governmental agency that it may be 


                                         G-1

<PAGE>


     responsible for clean-up of the property or surrounding areas pursuant to 
     the Federal Comprehensive Environmental, Response, Compensation and 
     Liability Act, 42 U.S.C. Section 9601 et seq., the Federal Water Pollution
     Control Act (33 U.S.C.A. Section 1151 et seq.), the Clean Water Act of 1977
     (33 U.S.C.A. Section 1251 et seq.), or the regulations promulgated 
     thereunder (if applicable), or any other federal, state or local 
     environmental law, regulation or ordinance.

          The undersigned makes this Certificate and Statement with the 
understanding that Landlord and any others with which Landlord may be dealing 
intend to rely upon this Certificate and Statement and the undersigned agrees 
that they may so rely.

Dated: ________________, 199_.


                                   _________________________________________
                                   (Name of Tenant)


                                   By:______________________________________
                                   Name: ___________________________________
                                   Title: __________________________________



































                                         G-2

<PAGE>

                                     EXHIBIT "H"

                            PROPERTY ENVIRONMENTAL STATUS

     IBM, the former owner of the property, manufactured computer punch cards 
and printer ribbons at the South Brunswick facility during which time IBM 
utilized a common degreasing agent known as TCA.  In December 1977, TCA was 
discovered in the groundwater beneath the Land.  As a result, IBM entered 
into an Administrative Consent Order ("ACO") with the New Jersey Department 
of Environmental Protection ("NJDEP") to perform a groundwater remediation 
program which is still ongoing. IBM is solely responsible for the complete 
remediation of the Land with respect to pre-purchase conditions to current 
NJDEP standards.  The ACO, as amended, is filed of public record. 


<PAGE>

                                     EXHIBIT "I"

               HEATING, VENTILATION AND AIR CONDITIONING SPECIFICATIONS


     Landlord shall provide air conditioning and winter humidification on a 
year-round basis throughout Building 3.  The equipment shall maintain a 
uniform (1) indoor temperature of 76 degrees F.D.B. at 50% R.H, 5% automatic 
control in summer based on the local 2-1/2% outdoor design condition as 
specified in the latest edition of the "ASHRAE HANDBOOK OF FUNDAMENTALS" and 
(2) indoor temperature of 72 degrees F.D.B. at 30% R.H. minimum in winter 
based on the local 97.5% outdoor design condition as specified in the latest 
edition of the "ASHRAE HANDBOOK OF FUNDAMENTALS".  Automatic reset on the 
humidifiers to prevent condensation on walls and glass during extreme cold 
weather shall be installed.  Temperature control shall be automatic and shall 
maintain temperature set at + or - 2 degrees F.  All systems shall conform to 
local and national codes.  In the event that Tenant exercises any right under 
the Lease, or otherwise, to modify the systems in Building 3, such that the 
air conditioning and winter humidification systems do not meet the above 
standards, Tenant shall be responsible for performing such additional work so 
that the air conditioning and winter humidification systems do meet the above 
standards.   


<PAGE>


                                    EXHIBIT "J"
                                          
                                     HOLIDAYS
                                          
                                          
                                     New Year's Day
                                     Presidents' Day
                                     Memorial Day
                                     Independence Day*
                                     Labor Day   
                                     Thanksgiving
                                     Day following Thanksgiving
                                     Christmas*
                                          
                                          
               *    When July 4 or Christmas falls on a Tuesday, Monday is also
                    deemed a Holiday; and when July 4 or Christmas falls on a
                    Thursday, Friday is also deemed a Holiday. 


<PAGE>

                                     EXHIBIT "K"

                          PLAN OF PROPERTY AND PARKING AREAS

                                   (to be provided) 


<PAGE>

                                     EXHIBIT "L"

                                     TENANT WORK

                                           
1.   Completion Schedule.  Within one hundred twenty (120) days after the 
execution of this Lease, Tenant shall deliver to Landlord, for Landlord's 
review and approval, a schedule ("Work Schedule") setting forth a timetable 
for the planning and completion of the installation of improvements to be 
constructed by Tenant in Building 3 (the "Tenant Work").  The Work Schedule 
shall set forth each of the various items of work to be done by or approval 
to be given by Landlord and Tenant in connection with the completion of the 
Tenant Work.  Such Work Schedule shall be submitted to Landlord for its 
approval and, upon approval by both Landlord and Tenant, such Work Schedule 
shall become the basis for completing the Tenant Work.

2.   Tenant Work.  Reference herein to "Tenant Work" shall include all work 
to be done in Building 3 pursuant to the Tenant Work Plans described in 
Section 3 below, including, but not limited to, partitioning, doors, 
ceilings, floor coverings, wall finishes (including paint and wall covering), 
electrical (including lighting, switching, telephones, outlets, etc.), 
plumbing, heating, ventilating and air conditioning, fire protection, 
cabinets and other millwork.

3.   Tenant Work Plans.  Immediately after the execution of the Lease, 
Tenant's architect shall prepare final working drawings and specifications 
for the Tenant Work.  Such final working drawings and specifications are 
referred to herein as the "Tenant Work Plans."  The Tenant Work Plans must be 
consistent with Landlord standards, conform to all applicable laws, 
ordinances, regulations, codes and other requirements of governmental 
authorities and with the regulations of Landlord's insurance underwriter and 
meet the further requirements set forth in the Schedule attached hereto.  Any 
such working drawings shall be reviewed and approved or disapproved by 
Landlord (any disapproval being accompanied by a detailed explanation of the 
reason for such disapproval) within ten (10) days after submission to 
Landlord.  Following approval of such working drawings, or revised working 
drawings, as the case may be, the working drawings shall be submitted to the 
appropriate governmental bodies by Tenant's architect for plan checking, the 
issuance of a building permit, and securing of all other necessary 
governmental approvals.  Tenant, with Landlord's cooperation and subject to 
Landlord's approval, not to be unreasonably withheld, shall cause to be made 
any changes in the plans and specifications necessary to obtain the building 
permit.

4.   Construction of Tenant Work.  After the Tenant Work Plans have been 
prepared and approved, and a building permit for the Tenant Work has been 
issued, Tenant, upon Landlord's approval, shall enter into a construction 
contract with its contractor for the installation of the Tenant Work in 
accordance with the Tenant Work Plans.  All contractors or subcontractors of 
Tenant, and any contract entered into between Tenant and any contractor, 
shall be approved by Landlord prior to work commencement.  Tenant shall 
supervise the completion of such work and shall use due diligence to secure 
substantial completion of the work in accordance with the Work Schedule.  The 
Tenant Work shall be constructed in accordance with the Tenant Work Plans 
approved by Landlord, the requirements of all applicable laws, ordinances, 
regulations, codes and other requirements of governmental authorities and 
with the regulations of Landlord's underwriter.  In addition, the Tenant Work 
shall be constructed in a thorough, first-class and workmanlike manner and 
shall be in good and usable condition at the date of completion.  At any time 
and from time to time during the construction of the Tenant Work, Landlord, 
Landlord's architect and Landlord's general contractor may enter upon 
Building 3 and inspect the Tenant Work and take such steps as they may deem 
necessary for the protection of the Buildings.  Such inspection shall, 
however, be for Landlord's benefit only and may not be relied upon by Tenant 
or any other party.  A portion of the cost of constructing the Tenant Work 
shall be paid as provided in Section 5 hereof.  

5.   Payment of Cost of the Tenant Work.

     (a)  Landlord hereby grants to Tenant a "Tenant Allowance" of up to 
Twenty Dollars ($20.00) per square foot of Rentable Area of Building 3 for a 
total of up to Six Hundred Thousand Dollars ($600,000).  Such Tenant 
Allowance shall be used only for:

          (1)  Preparing the drawings and specifications, including 
     architectural, mechanical, electrical, plumbing and structural drawings
     and all other aspects of the Tenant Work Plans.

          (2)  Plan check, permit and license fees relating to construction of
     the Tenant Work.

          (3)  Construction of the Tenant Work, including, without limitation,
     the following:

               (a)  Installation within Building 3 of all partitioning, doors, 
                    floor coverings, ceilings, wall coverings and painting, 
                    millwork and similar items.

               (b)  All electrical wiring, lighting fixtures, outlets, emergency
                    generators and switches, and other electrical work to be
                    installed within or outside of Building 3.

               (c)  The furnishing and installation of all duct work, terminal 
                    boxes, diffusers and accessories required for the completion
                    of the heating, ventilation and air conditioning systems 
                    within Building 3.

               (d)  Any additional Tenant requirements including, but not 
                    limited to, odor control, special heating, ventilation and 
                    air conditioning, noise or vibration control or other 
                    special systems.

               (e)  All fire and life protection systems such as fire walls, 
                    alarms, including accessories, safety control systems, 
                    sprinklers, fire piping, and wiring installed within 
                    Building 3.

               (f)  Installation of the security systems in Building 3. 

               (g)  All plumbing, fixtures, pipes and accessories to be 
                    installed within Building 3.

               (h)  Testing and inspection costs.

               (i)  Reasonable contractors' fees, including, but not limited to,
                    any fees based on general conditions.

          (4)  All other out-of-pocket costs to be expended by Landlord in 
the approval or construction of the Tenant Work, excluding those costs 
incurred by Landlord for construction of Landlord's Work, as noted in Exhibit 
"D".

     (b)  The cost of each item shall be charged against the Tenant 
Allowance.  In the event that the cost of installing the Tenant Work, as 
established by Tenant's final pricing schedule, shall exceed the Tenant 
Allowance, or if any of the Tenant Work is not to be paid out of the Tenant 
Allowance as provided above, the excess shall be paid by Tenant.


                                         L-1

<PAGE>

6.   Applications for Tenant Allowance.  

     (a)  At any time after the date hereof, the Tenant Allowance shall be 
paid by Landlord (x) to Tenant to reimburse Tenant for amounts theretofore 
paid to Tenant's vendors, suppliers or contractors upon receipt of paid 
invoices, or (y) directly to Tenant's vendors, suppliers or contractors, 
promptly upon Landlord's receipt of invoices for the cost of the work 
delivered by Tenant to Landlord for payment to such vendors, suppliers or 
contractors together with a letter (a "Direction of Payment Letter") 
authorizing and directing Landlord to pay such invoices, and, provided that 
whether Landlord shall reimburse Tenant pursuant to clause (x) or shall pay 
Tenant's vendors, suppliers or contractors pursuant to clause (y), Landlord 
shall have received (a) a certificate signed by Tenant and Tenant's Architect 
setting forth (i) that the sum then requested was paid or is owed by Tenant 
and was or is due to contractors, subcontractors, materialmen, engineers and 
other persons who have rendered services or furnished materials in connection 
with work on the Tenant Work, (ii) a complete description of such services 
and materials and the amounts paid or to be paid to each of such persons in 
respect thereof, (iii) that the work described in the certificate has been 
completed substantially in accordance with the Tenant Work Plans and (iv) the 
amount of all previous payments made by Landlord hereunder with respect to 
Tenant Work and that no part of the sums being requested were part of a prior 
request for which payment was made, (b) paid receipts or such other proof of 
payment as Landlord shall reasonably require for all such work completed 
(other than that which is the subject of the then pending disbursement in the 
event Landlord is paying Tenant's vendors, suppliers or contractors directly) 
and (c) lien waivers satisfactory to Landlord executed by any contractors or 
subcontractors furnishing labor or supplying materials in connection with 
such work with respect to all portions thereof previously completed (other 
than that which is the subject of the then pending disbursement in the event 
Landlord is paying Tenant's vendors, suppliers or contractors directly).  
Landlord shall reimburse Tenant or pay such invoices on behalf of Tenant 
within thirty (30) days after Landlord's receipt of a written request for 
reimbursement from Tenant or Direction of Payment Letter and shall debit the 
Tenant Allowance therefor, provided further, however, that (x) Tenant shall 
not submit a request for reimbursement or a Direction of Payment Letter more 
than once per calendar month, and (y) an amount equal to 10% of the Tenant 
Allowance shall be held back by Landlord until Tenant has complied with the 
requirements of subsection (b) below.

     (b)  The funds remaining to be advanced hereunder but not advanced 
pursuant to subsection (a) above shall not be deemed to be due and payable 
until (i) the Tenant shall submit to the Landlord a final application, and 
(ii) the Tenant shall deliver to the Landlord reasonably satisfactory 
evidence that final payment has been made for all materials and labor 
furnished in connection with the Tenant Work; and (B) a copy of a final 
unconditional certificate of occupancy evidencing that Tenant may commence 
occupancy of Building 3 for all purposes set forth in this Lease.

7.   Insurance.

     (a)  All of Tenant's contractors shall maintain the following insurance 
coverages in the minimum amounts specified below or such greater amounts as 
may be required by Landlord based upon the risks of the project or good 
insurance practices: 

          (1)  Commercial General Liability Insurance including 
               Products/Completed Operations, Owners and Contractors Protective
               Liability and Broad Form Contractual Liability with the exclusion
               pertaining to explosion collapse and underground property damage
               hazards eliminated.  

          (2)  Business Automobile Liability Insurance including owned, hired, 
               and non-owned automobiles.

          (3)  Statutory Workers' Compensation Insurance, including occupational
               disease with employers' liability limits not less than mandated 
               by statute.

     (b)  In addition to the foregoing insurance coverages, during the course 
of construction, Tenant or Tenant's general contractor or construction 
manager shall maintain "All-risk" builder's risk insurance for the full 
replacement cost of the Tenant Work.

     (c)  The insurance identified under a(i) and (ii) above shall (a) be in 
such amounts as may be reasonably determined by Landlord (but not less than 
$1,000,000 or more than $5,000,000), depending on the scope and nature of the 
Tenant Work, (b) name Landlord and any other parties designated by Landlord 
as additional insureds, (c) be in companies licensed to do business in New 
Jersey and reasonably satisfactory to Landlord, and (d) provide that the 
policies will not be changed, canceled or expire until at least thirty (30) 
days prior written notice has been given to Landlord. Evidence of all 
coverage shall be delivered to Landlord prior to any such contractor or 
subcontractor commencing work in the Buildings.  The liability of Tenant, its 
contractors and subcontractors shall not be limited because of the insurance 
required hereunder nor to the amounts thereof nor because of any exclusions 
from coverage in any insurance policy.

8.   Performance Bonds.  Unless Tenant or its general contractor provides 
payment and performance bonds for the full cost of the Tenant Work, each 
contract and subcontract providing for materials and/or services with a value 
in excess of $25,000 shall require the Tenant's general contractor thereunder 
to obtain payment and performance bonds in the full amount of its contract or 
subcontract.  All bonds required pursuant to this provision shall be in form 
reasonably acceptable to Landlord, shall be issued by reputable surety 
companies licensed to do business in New Jersey and shall name Landlord and 
Tenant as obligees. 

9.   Landlord Procedures.  Tenant shall comply with all procedures and 
policies established by Landlord from time to time relating to construction 
by tenants in the Building.  

10.  Coordination of Work.  Construction of the Tenant Work shall be 
coordinated with all work being performed by Landlord to the end that the 
Tenant Work will not interfere with the operation of the Building or 
interfere with or delay the completion of any other construction within the 
Building.  Such work shall be performed in a manner so as not to disturb or 
annoy other tenants or occupants of the Project and shall be performed only 
during such hours and under such conditions as shall be established by 
Landlord.

11.  Safety.  Tenant shall cause Tenant's contractors to (i) take all 
precautions necessary for the prevention of accidents and for the safety of 
persons and property, (ii) comply with all applicable laws, ordinances, 
rules, regulations and orders of any public authority relating thereto, and 
(iii) promptly report to Landlord any injury and furnish Landlord a written 
accident report within 24 hours of the accident and a copy of the accident 
report filed with its insurance carrier at the time of filing of such report. 
 

12.  Miscellaneous Construction Obligations.
 
     (a)  Tenant and Tenant's contractors shall be solely responsible for the 
transportation, safekeeping and storage of materials and equipment used in 
the performance of the Tenant Work, for the removal of waste and debris 
resulting therefrom, and for any damage caused by them to any part of the 
Project.  It shall be Tenant's responsibility to cause each of Tenant's 
contractors to maintain continuous protection of adjacent property and 
improvements against damage by reason of the performance of the Tenant Work.  
It shall also be Tenant's responsibility to cause each Tenant's contractor to 
properly protect the Tenant Work.  Any damage caused by Tenant's contractors 
to any portion of the Building or to any property of Landlord shall be 
repaired to its condition prior to such damage at no expense to Landlord.


                                         L-2

<PAGE>


     (b)  Tenant shall cause Tenant's contractors to (i) keep Building 3 and 
adjacent areas, including without limitation the loading docks, elevators, 
logistic areas and surrounding areas, free from accumulations of waste 
material or rubbish, (ii) keep dirt and dust from infiltrating into adjacent 
tenant, common and mechanical areas, (iii) protect the front and top of all 
perimeter HVAC units and thoroughly clean them upon completion of work, (iv) 
block off supply and return grills, diffusers and ducts to keep dust from 
entering into the building HVAC system, (iii) forthwith remove all rubbish, 
tools, equipment and materials from in and about Building 3 upon completion 
of the work. 

     (c)  Tenant's contractors may not use any space within the Building for 
storage handling or moving of materials or equipment and/or for the location 
of a field office or facilities for the employees of such contractor or 
subcontractor without obtaining Landlord's prior written approval for each 
such use.  If any Tenant's contractor shall use any space in the Building for 
any or all of the aforesaid enumerated purposes or any other similar purpose 
without obtaining Landlord's written approval therefor, Landlord shall have 
the right to terminate such use and remove all of such Tenant's Contractor's 
materials, equipment and other property from such space, without Landlord 
being liable to Tenant and/or to such Tenant's contractor, and the cost of 
such termination and/or removal shall be paid by Tenant to Landlord.

     (d)  Tenant shall promptly pay all Tenant's contractors or apply for 
such payment under the Tenant Allowance.  Should any lien be made or filed in 
connection with the Tenant Work the cost of which is Tenant's responsibility, 
Tenant shall bond against or discharge the same within (10) days after 
receiving notice thereof.  If Tenant shall fail to cause such lien to be 
bonded against or to be discharged within such period, then, in addition to 
any other right or remedy which Landlord may have under this Lease, at law or 
in equity, Landlord may, but shall not be obligated to, discharge the same 
either by paying the amount claimed to be due or by procuring the discharge 
of such lien by deposit or by bonding.  Any amount so paid by Landlord and 
all costs and expenses incurred by Landlord in connection therewith, together 
with interest at the Default Rate from the respective dates of Landlord's 
making of the payment and incurring of the cost and expense, shall constitute 
Additional Rent payable by Tenant under this Lease and shall be paid by 
Tenant to Landlord on demand.

     (e)  Upon completion of the Tenant Work, Tenant shall furnish Landlord 
with contractors' affidavits and full and final waivers of liens and 
receipted bills covering all labor and materials.

     (f)  Within sixty (60) days after the Tenant Work have been completed, 
Tenant shall provide Landlord with a complete set of reproducible, record 
drawings for the Buildings showing as-built conditions, including any 
manuals, warranties or other such documents relating to the Tenant Work.

     (g)  Tenant shall indemnify, defend and hold harmless Landlord, its 
agents, contractors and employees from and against all claims, damages, 
liabilities, losses and expenses of whatever nature, including but not 
limited to, reasonable attorneys' fees, arising out of or resulting from the 
negligence or willful misconduct of Tenant, Tenant's contractors, or their 
respective agents and employees in the course of exercising its rights under 
this Exhibit "L".  Tenant shall provide or cause to be provided in all 
contracts with each Tenant's contractor that such Tenant's contractor shall 
indemnify, defend and hold harmless Landlord, its agents and employees, from 
and against all claims, damages, liabilities, losses and expenses of whatever 
nature, including but not limited to, reasonable attorneys' fees, arising out 
of or resulting from the negligence or willful misconduct of such Tenant's 
contractor or its agents or employees in connection with the performance of 
the Tenant Work.  The foregoing indemnities shall be in addition to the 
insurance requirements set forth in this Exhibit and shall not be in 
discharge or substitution of same, and shall not be limited in any way by any 
limitations on the amount or type of damages.

13.  Tenant Improvement Payments.  As noted in Exhibit "B", Fixed Rent to be 
paid by Tenant from and after the Commencement Date includes amounts designed 
to reimburse Landlord for a portion of the Tenant Allowance advanced by 
Landlord, such amounts being based upon a 10 year level payment amortization 
schedule with interest at 10%. Prior to the Commencement Date, Tenant shall 
reimburse Landlord for the remainder of the Tenant Allowance (based upon the 
same amortization schedule and interest rate), in equal consecutive monthly 
payments of $7,875.00 (the "Tenant Improvement Payments").  The Tenant 
Improvement Payments shall be due on the first day of each month during the 
period commencing on January 1, 1997 and terminating on March 1, 2002.  The 
Tenant Improvement Payments shall constitute Additional Rent under this Lease.


                                         L-3

<PAGE>

                                       Schedule

     In addition to complying with the requirements for Plans and 
Specifications generally (as set forth in this Exhibit "L"), the Tenant Work 
Plans shall comply with the following requirements:

1.   Architectural drawings must include the following:

     (a)  Partition locations and types (including any slab-to-slab partitions
          or special acoustical treatment required);
     (b)  Door locations, door schedule, door frames and the swing of each door;
     (c)  Reflected ceiling plan;
     (d)  Millwork items;
     (e)  Hardware schedule;
     (f)  Finish schedule showing all finish types and locations; and
     (g)  Telephone rooms.
     (h)  Roof plans and penetrations.

2.   Structural drawings must include the following:

     (a)  Location of any floor openings and stair drawings;
     (b)  Location and extent of any floor loading beyond building standard; and
     (c)  Any structural changes caused by Tenant's design (including raised
          flooring).

3.   Electrical drawings must include the following:

     (a)  Location and extent of any special electric requirements caused by
          equipment such as computer hardware, copiers or supplemental A/C units
          (i.e., separate circuiting, coaxial cabling, etc.);
     (b)  Estimate of total electrical load on each floor;
     (c)  Location of all electrical outlets, switches, telephone outlets, exit
          signs, and lighting fixtures;
     (d)  Location of all computer equipment systems and special audio-visual
          equipment; and
     (e)  Location and type of all fire alarm system devices and wiring.

4.   Heating, ventilating and air conditioning (HVAC) drawings must include the
following:

     (a)  Location of any duct work, ceiling diffusers, and thermostats;
     (b)  Variable air volume (VAV) unit quantities and sizing information;
     (c)  Location and sizing of any supplemental HVAC equipment; and
     (d)  Estimate of total HVAC load on each floor.

5.   Plumbing drawings must include the following (if applicable):

     (a)  Location of kitchen, kitchenettes, etc.;
     (b)  Location of drinking fountains; and
     (c)  Location of sinks and toilets (other than base building).

6.   Sprinkler and other fire suppression system drawings and specifications and
design calculations.

7.   Tenant security system must include:

     (a)  A preliminary outline equipment brochure and riser diagram indicating
          all components (electrical power characteristics, voltages, and 
          specific locations on plan);
     (b)  All requirements for dedicated circuits;
     (c)  All requirements for bonding and grounding;
     (d)  All requirements for outside connections to the telephone company or a
          central protective alarm agency;
     (e)  All emergency circuiting requirements; and
     (f)  The type, sizes, quantities and location of all required cable and 
          circuit.


                                         L-4

<PAGE>


                                     EXHIBIT "M"

               SUBORDINATION, ATTORNMENT AND NON-DISTURBANCE AGREEMENT

          THIS SUBORDINATION, NON-DISTURBANCE AND ATTORNMENT AGREEMENT (this 
"Agreement") is made and entered into this ____ day of ___________, 19__, by 
and among Teleport Communications Group Inc., a Delaware corporation 
("Tenant''), with a mailing address of _______________________________________,
and ______________________________, a __________ corporation ("Mortgagee"), 
with a mailing address of ______________________________________________ and 
South Brunswick Investors, L.P., a Delaware limited partnership ("Landlord") 
with a mailing address of __________________________________.

                                 W I T N E S S E T H:

          WHEREAS, Landlord and Tenant have entered into a lease (the 
"Lease") dated ____________________ of certain premises (the "Premises") 
situate ___________________, erected on the tract of land described in 
Exhibit "A" attached hereto and made a part hereof; and

          WHEREAS, Landlord is about to make, execute and deliver to 
Mortgagee a certain promissory note secured by a first lien Mortgage on the 
Premises (the "Mortgage"); and

          WHEREAS, the Lease will be assigned by Landlord to Mortgagee as 
further security for the promissory note.

          NOW, THEREFORE, in consideration of the mutual promises hereinafter 
contained and other good and valuable consideration, the receipt and 
sufficiency whereof are hereby acknowledged, Tenant and Mortgagee, intending 
to be legally bound hereby, covenant and agree as follows:

          1.   The Lease shall be subject and subordinate to the lien of the 
Mortgage and to all the terms, conditions and provisions thereof, and to any 
renewals, extensions, modifications or replacements thereof, to the full 
extent of the principal sum secured by the Mortgage, all interest accrued and 
from time to time unpaid thereon and any other amounts required to be paid by 
the terms of the Mortgage and the instruments secured thereby, unless 
Mortgagee elects to subordinate the mortgage to the Lease.

          2.   Provided Tenant is not in default beyond the applicable grace 
period provided for in the Lease:

               (a)  Tenant shall not be joined as an adverse or party 
defendant in any action or proceeding which may be instituted or commenced by 
Mortgagee to foreclose or enforce the Mortgage, unless Tenant is deemed to be 
a necessary party.

               (b)  Tenant shall not be evicted from the Premises nor shall 
any of Tenant's rights under the Lease be affected or disturbed in any way by 
reason of this subordination or any modifications of or default under the 
Mortgage.

               (c)  Tenant's leasehold estate under the Lease shall not be 
terminated or disturbed during the term of the Lease as it may be extended, 
by reason of any default under the Mortgage.

               (d)  Provided Landlord is not in default under the terms of 
the Mortgage, Mortgagee hereby subordinates and subjects its right to any 
portion of the insurance proceeds otherwise payable to Landlord and/or 
Mortgagee, when and to the extent necessary for Landlord to comply with its 
obligations of repair and restoration as required by the provisions of the 
Lease.

               (e)  If Mortgagee or any successor in interest to it shall 
succeed to the rights of Landlord under the Lease, whether through 
possession, termination or cancellation of the Lease, surrender, assignment, 
judicial action, sublettings, foreclosure action or delivery of a deed or 
otherwise, Tenant will attorn to and recognize such successor-landlord as 
Tenant's landlord and the successor-landlord will accept such attornment and 
recognize Tenant's rights of possession and use of the Premises in accordance 
with the provisions of the Lease and, without further evidence of such 
attornment and acceptance, the parties shall be bound by and comply with all 
the terms, provisions, covenants and obligations contained in the Lease, on 
their respective parts to be performed.  Such successor-landlord shall not, 
however, be:

                    (i)  liable for any act or omission of Landlord or any 
prior landlord;

                    (ii) obligated to Tenant for any security deposit or other
sums deposited with any prior landlord (including Landlord) under the Lease and
not physically delivered to Mortgagee;

                    (iii)     bound by any rent or additional rent which the 
Tenant might have paid for more than the current month to any prior landlord 
(including Landlord);

                    (iv) bound by any amendment or modification of the Lease or
any cancellation or surrender of the Lease made without the consent of Mortgagee
subsequent to the date hereof;

                    (v)  subject to any offsets, claims or defenses which 
Tenant might have against any prior landlord (including Landlord);

                    (vi) bound or liable under any written or oral notice 
given by Tenant to Landlord or any prior landlord and not given in writing to 
such successor-landlord; or

                    (vii)     obligated or liable (financially or otherwise) 
on account of any representation, warranty, or indemnification obligation of 
Landlord with respect to hazardous materials, asbestos, or other 
environmental laws, claims or liabilities, whether expressly stated as such 
or subsumed within general obligations to comply with laws or preserve the 
benefits of Tenant's use and enjoyment of the Premises.

          3.   Tenant agrees to give Mortgagee a copy of any notice of 
default served upon the Landlord, at Mortgagee's address stated on page one 
hereof or such other address designated in writing to Tenant.  Tenant further 
agrees that if Landlord shall have failed to cure such default within the 
time provided in the Lease, then the Mortgagee shall have an additional 
thirty (30) days within which to cure such default or if such default cannot 
be cured within that time, then such additional time as may be necessaary to 
cure such default shall be granted if within such thirty (30) days Mortgagee 
has commenced and is diligently pursuing the remedies necessary to cure such 
default (including, but not limited to commencement of foreclosure 
proceedings, if necessary to effect such cure) in which event the Lease shall 
not be terminated which such remedies are being so diligently pursued.  


                                         M-1

<PAGE>

          4.   Landlord and Tenant each agree not to amend, modify or accept 
a termination of the Lease without the prior written consent of the 
Mortgagee, which consent shall not be unreasonably withheld or delayed.

          5.   (a)  Tenant will not pay an installment of rent or any part 
thereof more than thirty (30) days prior to the due date of such installment.

               (b)  After notice from Mortgagee to Tenant, Tenant will pay to 
Mortgagee, or to such person or firm designated by Mortgagee, all rentals and 
other monies due and to become due to Landlord under the Lease.

          6.   This Agreement shall inure to the benefit of and be binding 
upon the parties hereto and their respective heirs, executors, distributees, 
administrators, legal representatives, successors and assigns and may not be 
modified orally or by any course of conduct other than except by a written 
instrument signed by both parties hereto.

          7.   All notices required or permitted by this Agreement shall be 
given by (i) hand delivery, (ii) U.S. Registered or Certified Mail, return 
receipt requested, or (iii) nationally reputable overnight courier service, 
and shall be addressed to the recipient at the respective address specified 
in the opening paragraph of this Agreement.  No notice shall be effective 
unless and until actually received.  

          IN WITNESS WHEREOF, the parties hereto have caused this Agreement 
to be duly executed under seal as of the day and year first above written.

                                   TENANT:

                                   TELEPORT COMMUNICATIONS GROUP INC.


                                   ____________________________________
                                   By:
                                   Name:
                                   Title:


                                   LANDLORD:

                                   SOUTH BRUNSWICK INVESTORS, L.P.


                                   ____________________________________
                                   By:
                                   Name:
                                   Title:


                                   MORTGAGEE:


                                   ____________________________________
                                   By:
                                   Name:
                                   Title:






- -------------------------------------------------------------------------------





                              Notary Form of Landlord
                ---------------------------------------------------
                               Notary Form of Tenant
                ---------------------------------------------------
                              Notary Form of Mortgagee
                                          
                                          
                                        M-2


<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                    U.S. SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                  FORM 10-KSB
 
         (X)  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
                 SECURITIES EXCHANGE ACT OF 1934 (FEE REQUIRED)
 
                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 1996
                                       OR
       ( )  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
               SECURITIES EXCHANGE ACT OF 1934 (NO FEE REQUIRED)
 
             For the transition period from           to
 
                         COMMISSION FILE NUMBER 0-20047
 
                            ROYALE INVESTMENTS, INC.
             (Exact Name of Registrant as Specified in its Charter)
 
<TABLE>
<S>                                              <C>
                   MINNESOTA                                       41-1691930
         (State or Other Jurisdiction                             (IRS Employer
               of Incorporation)                               Identification No.)
 
    3430 LIST PLACE, MINNEAPOLIS, MINNESOTA                           55416
   (Address of principal executive offices)                        (Zip Code)
</TABLE>
 
        Registrant's telephone number, including area code: 612/920-4078
                            ------------------------
 
        Securities registered pursuant to Section 12(b) of the Act: NONE
 
          Securities registered pursuant to Section 12(g) of the Act:
                          COMMON STOCK, .01 PAR VALUE
 
    Check whether the issuer (1) filed all reports required to be filed by
Section 13 or 15(d) of the Securities Exchange Act of 1934 during the past 12
months (or for such shorter period that the registrant was required to file such
reports), and (2) has been subject to such filing requirements for the past 90
days. Yes /X/   No / /
 
    Check if disclosure of delinquent filers in response to Item 405 of
Regulation S-B is not contained in this form, and no disclosure will be
contained, to the best of registrant's knowledge, in definitive proxy or
information statements incorporated by reference in Part III of this Form 10-KSB
or any amendment to this Form 10-KSB. /X/
 
    State issuer's revenues for its most recent fiscal year: $2,509,548
 
    State the aggregate market value of the voting stock held by non-affiliates
computed by reference to the price at which the stock was sold, or the average
bid and ask prices of such stock, as of a specified date within 60 days. (SEE
definition of affiliate in Rule 12b-2 of the Exchange Act): $7,100,000 AS OF
MARCH 14, 1997
 
                     (APPLICABLE ONLY TO CORPORATE REGISTRANTS)
 
    State the number of shares outstanding of each of the registrant's classes
of common stock, as of the latest practicable date: 1,420,000 SHARES OF COMMON
STOCK AS OF MARCH 14, 1997
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
    If the following documents are incorporated by reference, briefly describe
them and identify the part of the Form 10-KSB (e.g., Part I, Part II, etc.) into
which the document is incorporated: (1) any annual report to security holders;
(2) any proxy or information statement; and (3) any prospectus filed pursuant to
Rule 424(b) or (c) under the Securities Act of 1933. The listed documents should
be clearly described for identification purposes (e. g., annual report to
securities holders for fiscal year ended December 24, 1990).
 
           1. PART III--DEFINITIVE PROXY STATEMENT TO BE FILED WITHIN
                         120 DAYS OF DECEMBER 31, 1996.
 
    Transitional Small Business Disclosure Format (check one) Yes / /   No /X/
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                                     PART I
 
ITEM 1. DESCRIPTION OF BUSINESS
 
    GENERAL
 
    Royale Investments, Inc. (the "Company") was incorporated on February 19,
1988 to become an infinite-life real estate investment trust ("REIT") for the
purpose of acquiring, leasing and managing income-producing commercial real
estate properties. This format provides its shareholders an opportunity to
participate in the benefits of real estate ownership under professional
management, while enjoying the liquidity of publicly-traded securities. The
Company currently owns seven properties located in Minnesota, Indiana,
Wisconsin, Illinois and North Dakota. The leases are triple net, whereby the
tenant is responsible for all costs and expenses of ownership, including roof
and structure repairs and maintenance. Three of the stores are leased to and
operated by a subsidiary of Fleming Companies, Inc. ("Fleming"), two are leased
to and operated by Nash Finch Company ("Nash Finch"), and two are leased to and
operated by franchisees of SUPERVALU INC. ("Supervalu")
 
    The Company has operated and will continue to operate as a REIT under
Sections 856 through 860 of the Internal Revenue Code. Under such provisions,
the Company must distribute at least 95% of its taxable income to its
shareholders and meet certain other asset and income tests. As a REIT, the
Company generally is not subject to federal income tax.
 
    The Company has no employees.  Subject to the supervision of the Company's
Board of Directors, the business of the Company is managed by Crown Advisors,
Inc. (the "Advisor"), which provides investment advisory and administrative
services to the Company and is owned by John Parsinen and Vernon R. Beck,
officers and directors of the Company. In addition, the Advisor serves as the
Company's consultant in connection with policy decisions and renders other
services delegated to it by the Board of Directors. As of December 31, 1996, the
Advisor employed three persons.
 
    The Company does not maintain or pay for any office space.The Company's
offices are located at the offices of the Advisor and are paid for by the
Advisor. However, the advisory agreement between the Advisor and the Company
provides that the Company pay a reasonable allocation of the Advisor's rent
necessary for the officers, directors and agents of the Company to conduct
business in the offices of the Advisor. There is no assurance that the Advisor
will not allocate some portion of its rent to the Company in the future.
 
    INVESTMENT STRATEGY
 
    The Company's objectives are to acquire, own and manage a portfolio of
commercial retail property which will provide steady cash flow and potential for
long-term capital appreciation. The Company will hold its properties until it
determines that the sale or other disposition of the properties is advantageous.
The Company intends to continue its current strategy of acquiring free-standing
retail properties under long-term leases to creditworthy national or regional
tenants. Management believes that the Company's real estate portfolio will
benefit from the stability offered by long-term net leased properties. The
Company may consider real estate interests other than in the food or
food-related distribution business, other than long-term net leased properties,
and other opportunities as may be determined by the Board of Directors to be
consistent with general investment objectives, including, but not limited to,
enhancing shareholder value and cash flow.
 
    FINANCING POLICIES
 
    The Company may incur indebtedness on a secured or unsecured basis.The Board
of Directors periodically reviews the Company's borrowings for reasonableness in
relation to the net assets of the
 
                                       1
<PAGE>
Company. The Company may, from time to time, negotiate lines of credit or
arrange for other short-term or long-term borrowings from commercial lenders or
from public offerings or institutional investors. Where advisable, the Company
may invest in properties subject to leases, existing loans, mortgages, deeds of
trust or similar liens. The Company may also obtain other mortgage financing for
unleveraged properties in which it has invested or may refinance properties
acquired on a leveraged basis. The only limitations to incurring additional
indebtedness is the requirement that additional financing be approved by a
majority of the directors, including a majority of the independent directors,
and a provision in the Bylaws of the Company limiting aggregate indebtedness to
300% of the book value of the gross tangible assets of the Company before
deduction for depreciation and non-cash reserves.
 
    POTENTIAL ENVIRONMENTAL LIABILITIES
 
    Under various federal, state and local laws and regulations, an owner of
real estate is liable for the costs of removal or remediation of certain
hazardous or toxic substances on such property. Such laws often impose such
liability without regard to whether the owner knew of, or was responsible for,
the presence of such hazardous or toxic substances. The costs of remediation or
removal of such substances may be substantial, and the presence of such
substances, or the failure to promptly remediate such substances, may adversely
affect the owner's ability to sell such real estate or to borrow using such real
estate as collateral. As an owner of its properties, the Company may be liable
for remediation costs, even though the Company's tenants are responsible for
such costs under the leases.
 
    The Company has obtained Phase I environmental assessments on all of its
properties, which are intended to discover information regarding, and to
evaluate the environmental condition of, the surveyed properties and surrounding
properties. The Phase I assessments include a historical review, a public
records review, a preliminary investigation of the site and surrounding
properties, screening for the presence of asbestos, polychlorinated biphenyls
("PCBs") and underground storage tanks and the preparation and issuance of a
written report, but do not include soil sampling or subsurface investigations.
 
    The Phase I assessments have not revealed any environmental liability that
the Company believes would have a material adverse affect on the Company's
business, assets or results of operations, nor is the Company aware of any such
liability. Nevertheless, it is possible that these assessments do not reveal all
environmental liabilities or that there are material environmental liabilities
of which the Company is unaware. Moreover, no assurances can be given that (i)
future laws, ordinances or regulations will not impose any material
environmental liability or (ii) the current environmental condition of the
Company's properties will not be affected by tenants and occupants, by the
condition of properties in the vicinity (such as the presence of underground
storage tanks) or by third parties unrelated to the Company.
 
    The Company believes that its properties are in compliance in all material
respects with all federal, state and local ordinances and regulations regarding
hazardous or toxic substances. The Company has not been notified by any
governmental authority, or is not otherwise aware, of any material
noncompliance, liability or claim relating to hazardous or toxic substances in
connection with its properties.
 
    COMPETITION
 
    The Company will compete within its geographic areas of operation for
acquisition, development and financing of properties with a wide variety of
investors, including syndicators, insurance companies, pension funds, corporate
and individual real estate developers, and other real estate investors which
have investment objectives similar to those of the Company.
 
    Competitive factors in the real estate industry will be heightened for the
Company because of a lack of investment diversification of its assets. Because
the Company currently owns only seven properties, the risk of material loss to
the Company on a tenant's default is greater than it would be if the Company had
a more diverse portfolio of properties.
 
                                       2
<PAGE>
    Moreover, the Company will be relying upon the expertise of tenants to
ensure that properties are operated profitably. There is no assurance that any
property will be operated profitably.
 
ITEM 2. DESCRIPTION OF PROPERTY
 
    The Company owns seven properties located in the central United States, and
leases the properties to operators of supermarkets under long-term operating
lease agreements. The leases have initial terms of 15 to 20 years. As of
December 31, 1996, the average remaining lease term was approximately 15
years.  All of the properties are leased under net leases where the tenant
typically will bear responsibility for substantially all property costs and
expenses associated with operations and maintenance, including real estate
taxes. The leases provide for annual base rental payments (payable in monthly
installments) ranging from $168,300 to $548,200. The leases also provide for
contractual increases in annual rent, and have renewal options of 4 to 8
five-year periods, subject to substantially the same terms and conditions as the
initial lease.
 
    Substantially all of the Company's income is derived from rental payments
received from its tenants. The table below sets forth certain information
concerning the Company's properties as of December 31, 1996.
 
<TABLE>
<CAPTION>
                                                                                   STRAIGHT
                                           GROSS                                     LINE      ANNUAL REAL
                                         LEASABLE                PERCENT OF         ANNUAL       ESTATE         LEASE
LOCATION                                AREA (GLA)                TOTAL GLA       BASE RENT       TAXES      EXPIRATION
- -----------------------------  -----------------------------  -----------------  ------------  -----------  -------------
<S>                            <C>                            <C>                <C>           <C>          <C>
Plymouth, MN.................  67,650 sq ft                              19%      $  522,813    $ 213,036          2006
Indianapolis, IN.............  67,541                                    19%         548,196      102,300          2011
Peru, IL.....................  44,300                                    13%         347,112       21,269          2014
Minot, ND....................  46,000                                    13%         316,272       53,291          2014
Glendale, WI.................  36,000                                    10%         177,984       64,244          2010
Oconomowac, WI...............  40,000                                    11%         264,798       49,985          2014
Delafield, WI................  52,800                                    15%         330,564       68,791          2014
</TABLE>
 
    The Minnesota and Indiana locations are operated by franchisees of SUPERVALU
INC. under the Cub Foods name. Supervalu is one of the nation's leading food
distribution companies and is engaged primarily in the business of selling food
and other products at wholesale to independently owned supermarkets. It is also
the 14th largest food retailer in the United States, based on sales. Supervalu's
common stock is traded on the New York Stock Exchange.
 
    The Minnesota property is leased to Innsbruck Investments, Inc., and is
personally guaranteed by certain principals of the tenant. The Indiana property
was leased to Goldmark, Inc. until April 1996, when the Company approved a
transfer of Goldmark's interest as tenant to Wigest Corporation, an Indiana
corporation. Supervalu has guaranteed the obligations of each of the tenants for
a period of ten years, commencing June 25, 1992, up to $3.5 million in
aggregate. The Supervalu guaranty may be used on either or both of the
properties. In consideration of this guaranty, the Company has agreed to pay
Supervalu an annual fee of 1% of the unused portion of the guaranty. As an
inducement to allow the Indiana lease transfer, Wigest Corporation has agreed to
pay one-half of this fee effective April 16, 1996.
 
    The Company and Supervalu have executed a companion lease in order to enable
Supervalu to control either of the properties upon a tenant default. The
companion lease for each property is on substantially the same terms as each of
the leases, and will allow (but not require) Supervalu to take over the
operation of the property upon a default by one or both of the tenants.
 
    The three Wisconsin properties are leased by Fleming Companies, Inc., the
largest food distributor in the United States. As of year end 1996, Fleming
served over 2,900 retail food stores in 36 states. In addition, Fleming provides
support services to retail customers and operates retail food stores under the
 
                                       3
<PAGE>
names Piggly Wiggly, Thriftway and Sentry. Fleming's common stock is traded on
the New York Stock Exchange.
 
    The properties located in Illinois and North Dakota are operated by Nash
Finch Company. Nash Finch is a Minnesota-based company engaged principally in
the wholesale and retail distribution of food and non-food products typically
found in supermarkets. Nash Finch is the third largest public grocery wholesaler
in the country. On a wholesale basis, Nash Finch supplies products to
approximately 1,400 supermarkets, military bases and other customers in
approximately 30 states. Nash Finch also operates conventional supermarkets,
principally under the names Sun Mart, Econofoods, Family Thrift Center, Food
Folks and Easter's. Nash Finch's common stock is traded on the NASDAQ National
Market System.
 
    The federal tax basis of all of the Company's properties is the same as the
basis for financial statement purposes. All tax depreciation is computed by the
straight line method. Buildings have depreciable lives of from 31.5 to 40 years.
Building improvements, which include landscaping, parking lots, etc., have
depreciable lives of 15 to 20 years.
 
    In the opinion of Company's management, the real estate owned by the Company
is adequately covered by insurance. The Company does not anticipate the need to
renovate any of the properties in the foreseeable future.
 
    MORTGAGE DEBT.  See note 5 to the financial statements for a detailed
description of the terms of the mortgages.
 
ITEM 3. LEGAL PROCEEDINGS
 
    During 1996, the Company was not a party to any legal proceedings.
 
ITEM 4. SUBMISSIONS OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
    There were no matters submitted to a vote of security holders during the
Company's fourth quarter.
 
                                    PART II
 
ITEM 5. MARKET FOR COMMON EQUITY AND RELATED STOCKHOLDER MATTERS
 
    PRICE RANGE OF COMMON STOCK
 
    The Company's Common Stock is traded on The Nasdaq SmallCap Market tier of
The Nasdaq Stock Market under the symbol RLIN. The following table sets forth
the range of the high and low last reported sale prices as reported by Nasdaq.
The quotations shown represent interdealer prices without adjustment for retail
markups, markdowns or commission, and may not reflect actual transactions.
 
<TABLE>
<CAPTION>
1995                                                                                                   LOW       HIGH
- --------------------------------------------------------------------------------------------------  ---------  ---------
<S>                                                                                                 <C>        <C>
First Quarter.....................................................................................      5 1/4      7 1/4
Second Quarter....................................................................................      4 3/4      5 5/8
Third Quarter.....................................................................................          5      6 3/8
Fourth Quarter....................................................................................      4 3/4          6
</TABLE>
 
<TABLE>
<CAPTION>
1996                                                                                                   LOW       HIGH
- --------------------------------------------------------------------------------------------------  ---------  ---------
<S>                                                                                                 <C>        <C>
First Quarter.....................................................................................      4 3/4      5 3/8
Second Quarter....................................................................................      4 7/8      5 3/4
Third Quarter.....................................................................................      5 1/8      5 3/4
Fourth Quarter....................................................................................      4 3/4      5 1/2
</TABLE>
 
                                       4
<PAGE>
    On March 14, 1997, the last sale price for the Common Stock, as reported by
Nasdaq, was $5.00 per share. As of March 14, 1997, there were approximately 275
record holders of the Common Stock. The Company estimates that there are
approximately 1,200 beneficial holders of the Common Stock.
 
    CASH DIVIDENDS
 
    In 1996 and 1995, the Company declared quarterly dividends of $.125 per
share for each of the four fiscal quarters. The Company's ability to pay
dividends in the future will be dependent upon cash flow generated from lease
payments received by the Company and cash generated from financing transactions,
as well as limitations imposed by applicable state laws. The Company's dividend
policy is determined by the Company's Board of Directors based upon the yield
available for similar securities, cash available to the Company and cash
required by the Company to meet anticipated requirements to purchase additional
properties. In early 1995, the Company established a dividend policy of basing
future distributions on funds from operations. It is expected that the Company
will pay out aggregate dividends in 1997 of $.50 per share, if no additional
properties are purchased.
 
ITEM 6. MANAGEMENT'S DISCUSSION AND ANALYSIS OR PLAN OF OPERATION
 
    OVERVIEW
 
    The Company was founded in 1988, but did not conduct any operations until
February 1990.  On December 31, 1991, the Company closed its initial public
offering of Common Stock. On June 25, 1992, the Company acquired two properties
from Supervalu. On June 30, 1993, the Company sold additional shares of Common
Stock in a public offering. During 1993 and 1994, the Company purchased three
properties from Fleming and two from Nash Finch.
 
    RESULTS OF OPERATIONS FOR FISCAL YEARS ENDED DECEMBER 1996 AND 1995
 
    In 1996, rental revenue increased by $41,230 to $2,477,412 from $2,436,182
in 1995, due to a contractual increase in two of the properties, as explained in
the following paragraph.  Since 1995 was the first year in which all of the
Company's properties were leased for an entire year, rental revenue increased by
$397,672 to $2,436,182 from $2,038,510 in 1994. Projected rental revenue for
1997 is approximately $2,500,000.
 
    Rent on the Company's Minnesota and Indiana properties is fixed for the term
of the leases, but is adjusted every five years by 50% of the increase in the
"Food-at-Home" component of the Consumer Price Index up to a maximum of 10% for
any five-year period. In March 1996, rent on the Minnesota property increased
approximately 6%, and in November 1996, rent on the Indiana property increased
approximately 8%. Remaining leases are for initial terms of seventeen to twenty
years, and the rents due under these leases adjust upward every five years based
upon a negotiated minimum rate or a percentage of sales, whichever is greater.
The principal expenses of the Company will be mortgage interest and
depreciation, and the leases are structured to provide sufficient rents to allow
the Company to service the debt and pay other operating costs of the leased
premises, including advisory fees. If rent is not paid as provided in the
leases, the Company may be unable to meet its mortgage or other payments.
 
    Interest income decreased in 1996 by approximately $16,000 due to a
reduction in cash and marketable securities. Interest income for 1995 decreased
to $48,467 from $216,726 in 1994. The decrease was the result of construction
period interest received on the Oconomowac and Delafield purchases during 1994,
which was no longer applicable in 1995.
 
    All operating expenses relating to the Company's properties, such as
utilities, property taxes, repairs and maintenance and insurance, are the
responsibility of the Company's tenants. Accordingly, the Company did not incur
any material costs for these expenses in 1996 or 1995. Operation and management
 
                                       5
<PAGE>
expenses consist mainly of fees paid to Crown Advisors, Inc., the Company's
advisor and affiliate. The contractual fee was $250,274 in both 1996 and 1995,
as compared to $510,964 in 1994. The higher amount in 1994 was the result of
acquisition fees paid on properties acquired in that year. General and
administrative expenses consist primarily of professional fees, travel expense
and state income taxes. These expenses increased to $42,505 in 1996 from $34,595
in 1995 and $34,874 in 1994.
 
    Mortgage interest expense decreased to $1,246,386 in 1996 from $1,266,506 in
1995, due to a reduction in mortgage principal of approximately $257,000 during
the year. Mortgage interest expense increased in 1995 from $1,098,030 in 1994.
This increase in expense resulted from additional mortgages obtained to purchase
additional properties in 1994. Correspondingly, depreciation expense increased
from $467,298 in 1994 to $554,428 in 1995 and 1996.
 
    Net income for 1996 was $293,046, an increase of $20,873 from 1995. This
increase was mostly due to additional revenues of $25,000 and reduced interest
expense of $20,000, offset by a $22,000 charge to operations for an unsuccessful
attempt to raise capital and acquire additional properties. Net income for 1995
was $272,173, a decrease of $28,742 from 1994. Although total revenue increased
by approximately $230,000 in 1995, interest and depreciation expense increased
by approximately $260,000, resulting in a decrease in net income.
 
    FUNDS FROM OPERATIONS
 
    The Company believes that to facilitate a clear understanding of its
operating results, funds from operations ("FFO") should be examined in
conjunction with net income. FFO are generally considered by industry analysts
to be the most appropriate measure of performance by a real estate investment
trust. Although there are variations in the REIT industry as to how funds from
operations are calculated, the Company has adopted the NAREIT (National
Association of Real Estate Investment Trusts) definition, adding back real
estate depreciation expense to net income. No other adjustments were required by
the Company.  FFO has increased to $847,000 (60 cents per share) in 1996,
compared to $827,000 (58 cents per share) in 1995 and $768,000 (54 cents per
share) in 1994.
 
    LIQUIDITY AND CAPITAL RESOURCES
 
    Proceeds from equity offerings and long-term mortgage financing have been
the principal sources of capital to fund the Company's property acquisitions.
Cash flow from operations has been the principal source of capital to fund
ongoing operations. Cash and cash equivalents and marketable securities at
December 31, 1996 aggregated $737,654 compared with $838,091 at December 31,
1995, and $1,130,864 at December 31, 1994. The Company anticipates that it will
have sufficient cash to meet its various cash requirements, including the
payment of debt service obligations and dividends in 1997.
 
    The Company declared dividends of $.50 per share to its shareholders in 1996
and 1995, and $.85 per share in 1994. To the extent that dividends are paid in
excess of net income plus amortization and depreciation, and cash is not
generated through borrowings or sale of equity, the Company's liquidity will be
adversely affected. In early 1995, the Company established a dividend policy of
basing future distributions on projected funds from operations. The Company
anticipates paying annual dividends of $.50 per share during 1997 if no
additional properties are purchased. Operating cash flows are expected to
increase due to future growth in rental revenues and from any property acquired
in the future.
 
    The ability of the Company to acquire additional properties is dependent
upon obtaining additional equity capital through the issuance and sale of Common
Stock or other securities as well as obtaining acceptable mortgage financing on
its properties and properties to be acquired. Whether the Company will be able
to procure the necessary financing will depend upon the prevailing market for
the Company's Common Stock, interest rates and the lending market for real
estate generally. There is no assurance that the Company will be able to raise
additional capital on terms satisfactory to the Company.
 
                                       6
<PAGE>
    The leases require the tenants to pay all costs associated with the
Company's properties, including most capital expenditures for repairs and
improvements. Consequently, it is not expected that the Company will be required
to incur any significant capital expenditures in connection with the maintenance
of its properties or any properties acquired in the future.
 
ITEM 7. FINANCIAL STATEMENTS
 
    Financial Statements required by this Item can be found beginning on page
F-2 of this Form 10-KSB and are deemed incorporated herein by reference.
 
ITEM 8. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
  FINANCIAL DISCLOSURE
 
    Not applicable.
 
                                       7
<PAGE>
                                    PART III
 
    Pursuant to instruction E(3) to Form 10-KSB, the information required by
Part III (Items 9, 10, 11, and 12) is hereby incorporated by reference to the
materials contained in "Election of Directors"; "Executive Officers and
Compensation"; "Certain Transactions" and "Security Ownership of Certain
Beneficial Owners and Management", contained in the Company's definitive proxy
materials to be filed with the Commission within 120 days of December 31, 1996.
 
ITEM 13. EXHIBITS AND REPORTS ON FORM 8-K
 
    (a) The following documents are filed as part of this Form 10-KSB:
 
    1. FINANCIAL STATEMENTS. Audited balance sheets as of December 31, 1996 and
1995, and the related statements of income, changes in stockholders' equity, and
cash flows for each of the three years in the period ended December 31, 1996 are
filed as part of this Form 10-KSB. See Index to Financial Statements on Page
F-1.
 
    2. EXHIBITS. Refer to the Exhibit Index that follows.
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
EXHIBIT NUMBER                                         TITLE                                       METHOD OF FILING
- -----------------  ------------------------------------------------------------------------------  -----------------
<C>                <S>                                                                             <C>
          3.1      Restated Articles of Incorporation of the Company, as amended                          (1)
 
          3.2      Bylaws of the Company                                                                  (1)
 
          3.3      Bylaws of the Company as amended June 15, 1993                                         (5)
 
         10.1      Amendment of Advisory Agreement (Amended as of September 11, 1992)                     (2)
 
         10.2      Amended Advisory Agreement (Amended as of October 1, 1991)                             (1)
 
         10.5      Amended Form of Directors' Warrant                                                     (1)
 
         10.6      Executed Indianapolis Purchase Agreement together with Exhibits                        (1)
 
         10.7      Executed Amendment to Indianapolis Purchase Agreement                                  (1)
 
         10.8      Executed Plymouth Purchase Agreement together with Exhibits                            (1)
 
         10.9      Super Valu Guaranty                                                                    (1)
 
        10.11      Plymouth Property Appraisal                                                            (1)
 
        10.12      Indianapolis Property Appraisal                                                        (1)
 
        10.13      Promissory Note dated June 25, 1992 issued by Royale Investments, Inc. to
                   American United Life Insurance Company for $4.8 million                                (3)
 
        10.14      Guaranty Agreement dated June 25, 1992 between Super Valu Stores, Inc. and
                   Royale Investments, Inc.                                                               (3)
 
        10.15      Letter of Credit Agreement dated July 2, 1991 between Super Valu Stores, Inc.
                   and Goldmark, Inc.                                                                     (3)
 
        10.16      Indenture of Mortgage and Security Agreement with Assignment of Rents dated as
                   of June 1, 1992 from Royale Investments, Inc. to American United Life
                   Insurance Company re: Indianapolis                                                     (3)
 
        10.17      Indenture of Mortgage and Security Agreement with Assignment of Rents and
                   Fixture Financing Statement dated as of June 1, 1992 from Royale Investments,
                   Inc. to American United Life Insurance Company                                         (3)
</TABLE>
 
                                       8
<PAGE>
<TABLE>
<CAPTION>
EXHIBIT NUMBER                                         TITLE                                       METHOD OF FILING
- -----------------  ------------------------------------------------------------------------------  -----------------
<C>                <S>                                                                             <C>
        10.18      First Amendment to Lease between Super Valu Stores, Inc. and Innsbruck
                   Investments, Inc. dated June 25, 1992                                                  (3)
 
        10.19      Companion Lease dated June 25, 1992 by and between Royale Investments, Inc.
                   and Super Valu Stores, Inc.                                                            (3)
 
        10.20      First Amendment to Guaranty Agreement dated June 25, 1992                              (4)
 
        10.21      First Amendment to Companion Lease dated June 25, 1992                                 (4)
 
        10.22      First Amendment to Memorandum of Lease dated June 25, 1992                             (4)
 
        10.25      Executed Glendale Purchase Agreement dated August 31, 1993 with Exhibits               (6)
 
        10.26      Executed Glendale Lease with Malone & Hyde, Inc. dated October 1, 1993                 (6)
 
        10.27      Fleming Companies Guaranty dated September 27, 1993                                    (6)
 
        10.28      Glendale Property Appraisal dated August 17, 1993                                      (6)
 
        10.29      Executed Peru Purchase Agreement dated November 30, 1993 with Exhibits                 (6)
 
        10.30      Executed Peru Lease with Nash-Finch Company dated December 1, 1993                     (6)
 
        10.31      Peru Property Appraisal dated August 13, 1993                                          (6)
 
        10.32      Peru Mortgage and Assignment of Leases and Rents and Security Agreement and
                   Fixture Financing Statement dated December 17, 1993 from Royale Investments,
                   Inc. to Northern Life Insurance Company                                                (6)
 
        10.33      Peru Secured Lease Obligation Note due November 1, 2013 from Royale
                   Investments, Inc. to Northern Life Insurance Company dated December 17, 1993           (6)
 
        10.34      Peru Subordination, Non-Disturbances and Attornment Agreement dated November
                   30, 1993                                                                               (6)
 
        10.35      Stock Option Plan for Directors                                                        (6)
 
        10.36      Form of Directors Stock Option                                                         (6)
 
        10.37      Executed Minot Purchase Agreement dated January 31, 1994, with Exhibits                (7)
 
        10.38      Executed Minot Lease with Nash Finch Company dated January 31, 1994                    (7)
 
        10.39      Minot Property Appraisal dated August 12, 1993                                         (7)
 
        10.40      Minot Mortgage and Security Agreement and Fixture and Financing Statement
                   dated January 31, 1994 from Royale Investments, Inc. to Northern Life
                   Insurance Company                                                                      (7)
 
        10.41      Minot Secured Lease Obligation Note due February 1, 2014, from Royale
                   Investments, Inc. to Northern Life Insurance Company dated January 31, 1994            (7)
 
        10.42      Minot Recognition Agreement dated January 31, 1994                                     (7)
</TABLE>
 
                                       9
<PAGE>
<TABLE>
<CAPTION>
EXHIBIT NUMBER                                         TITLE                                       METHOD OF FILING
- -----------------  ------------------------------------------------------------------------------  -----------------
<C>                <S>                                                                             <C>
        10.43      Executed Oconomowoc Purchase Agreement dated November 30, 1993, with Exhibits          (7)
 
        10.44      Executed Oconomowoc Lease with Malone & Hyde, Inc. dated January 10,1994               (7)
 
        10.45      Fleming Companies, Inc. Guaranty dated January 10, 1994                                (7)
 
        10.46      Oconomowoc Property Appraisal dated October 26, 1993                                   (7)
 
        10.47      Oconomowoc Mortgage and Security Agreement dated June 6, 1994 from Royale
                   Investments, Inc. to Modern Woodmen of America                                         (7)
 
        10.48      Oconomowoc Mortgage Note dated June 6, 1994 issued by Royale Investments, Inc.
                   to Modern Woodmen of America for $1.8 million                                          (7)
 
        10.49      Amended and Restated Mortgage Note dated June 6, 1994 issued by Royale
                   Investments, Inc. to Modern Woodmen of America for $1.8 million                        (7)
 
        10.50      Executed Delafield Purchase Agreement dated March 11, 1994 with Exhibits               (7)
 
        10.51      Executed Delafield Lease with Malone & Hyde, Inc. dated March 11, 1994                 (7)
 
        10.52      Fleming Companies, Inc. Guaranty dated March 11, 1994                                  (7)
 
        10.53      Delafield Property Appraisal dated March 7, 1994                                       (7)
 
        10.54      Delafield Mortgage and Security Agreement dated November 28, 1994 from Royale
                   Investments, Inc. to Modern Woodmen of America                                         (7)
 
        10.55      Delafield Mortgage Note dated November 28, 1994 issued by Royale Investments,
                   Inc. to Modern Woodmen of America for $2 million                                       (7)
 
        10.56      Glendale Mortgage Note dated March 28, 1994 issued by Royale Investments, Inc.
                   to Firstar Bank Milwaukee, N.A.                                                        (7)
 
        10.57      Amended and Restated Royale Investments, Inc. REIT Advisory Agreement dated
                   November 22, 1995                                                                      (8)
 
        10.58      Assignment of Tenant's Interest in Lease and Assumption Agreement dated April
                   22, 1996, with Exhibits                                                          Filed Herewith
 
        10.59      Second Amendment of Lease between Royale Investments, Inc. and Wigest
                   Corporation, dated April 22, 1996                                                Filed Herewith
 
        10.60      Release of Mark Murphy Guaranty, dated April 22, 1996                            Filed Herewith
 
        10.61      Subordination Agreement, dated April 22, 1996                                    Filed Herewith
</TABLE>
 
- ------------------------
 
(1) Incorporated by reference to the same numbered Exhibit to the Company's
    Registration Statement on Form S-11, File No. 33-43202.
 
(2) Incorporated by reference to the same Numbered Exhibit to the Company's Form
    10-Q filed for the quarter ended September 30, 1992.
 
(3) Incorporated by reference to Exhibit Nos. 10.1-10.7 to the Company's Form 8
    dated June 25, 1992.
 
(4) Incorporated by reference to Exhibit Nos. 10.20-10.22 to the Company's Form
    10-K filed for the year ended December 31, 1992.
 
                                       10
<PAGE>
(5) Incorporated by reference to Exhibit No. 11.1 of the Company's Form 10-Q
    filed for the quarter ended June 30, 1993.
 
(6) Incorporated by reference to Exhibit Nos. 10.25-10.36 to the Company's Form
    10-KSB filed for the year ended December 31, 1993.
 
(7) Incorporated by reference to Exhibit Nos. 10.37-10.56 to the Company's Form
    10-KSB filed for the year ended December 31, 1994.
 
(8) Incorporated by reference to Exhibit No. 10.57 to the Company's Form 10-KSB
    filed for the year ended December 31, 1995.
 
(b) No reports on Form 8-K were filed during the last quarter of the period
    covered by this report.
 
                                       11
<PAGE>
                                   SIGNATURES
 
    In accordance with Section 13 or 15(d) of the Exchange Act, the registrant
caused this report to be signed on its behalf by the undersigned, thereunto duly
authorized.
 
Date: March 28, 1997            ROYALE INVESTMENTS, INC.
 
                                By:              /s/ VERNON R. BECK
                                     -----------------------------------------
                                                   Vernon R. Beck
                                       PRESIDENT AND CHIEF EXECUTIVE OFFICER
 
                                By:           /s/ KENNETH R. NEUBAUER
                                     -----------------------------------------
                                                Kenneth R. Neubauer
                                              CHIEF FINANCIAL OFFICER
 
    In accordance with the Exchange Act, this report has been signed below by
the following persons on behalf of the registrant and in the capacities and on
the dates indicated.
 
          SIGNATURE                        TITLE                    DATE
- ------------------------------  ---------------------------  -------------------
 
      /s/ VERNON R. BECK        President and Chief
- ------------------------------    Executive Officer and
        Vernon R. Beck            Director
 
      /s/ JOHN PARSINEN         Vice President, Secretary
- ------------------------------    and Director
        John Parsinen
 
      /s/ ORVIN J. HALL         Director
- ------------------------------
        Orvin J. Hall
 
     /s/ KURT SCHOENROCK        Director
- ------------------------------
       Kurt Schoenrock
 
     /s/ KENNETH D. WETHE       Director
- ------------------------------
       Kenneth D. Wethe
 
     /s/ ALLEN C. GEHRKE        Director
- ------------------------------
       Allen C. Gehrke
 
                                       12
<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                    U.S. SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                FORM 10-KSB/A-1
 
            /X/ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
                        SECURITIES EXCHANGE ACT OF 1934
 
                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 1996
                                       OR
          / / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
                        SECURITIES EXCHANGE ACT OF 1934
             FOR THE TRANSITION PERIOD FROM _________ TO _________
 
                         COMMISSION FILE NUMBER 0-20047
 
                            ROYALE INVESTMENTS, INC.
             (Exact Name of Registrant as Specified in its Charter)
 
<TABLE>
<S>                                              <C>
                   MINNESOTA                                       41-1691930
         (State or Other Jurisdiction                             (IRS Employer
               of Incorporation)                               Identification No.)
 
    3430 LIST PLACE, MINNEAPOLIS, MINNESOTA                           55416
   (Address of principal executive offices)                        (Zip Code)
</TABLE>
 
        Registrant's telephone number, including area code: 612/920-4078
 
                            ------------------------
 
        Securities registered pursuant to Section 12(b) of the Act: NONE
 
          Securities registered pursuant to Section 12(g) of the Act:
                          COMMON STOCK, .01 PAR VALUE
 
    Check whether the issuer (1) filed all reports required to be filed by
Section 13 or 15(d) of the Securities Exchange Act of 1934 during the past 12
months (or for such shorter period that the registrant was required to file such
reports), and (2) has been subject to such filing requirements for the past 90
days. Yes /X/ No / /
 
    Check if disclosure of delinquent filers in response to Item 405 of
Regulation S-B is not contained in this form, and no disclosure will be
contained, to the best of registrant's knowledge, in definitive proxy or
information statements incorporated by reference in Part III of this Form 10-KSB
or any amendment to this Form 10-KSB. / /
 
    State issuer's revenues for its most recent fiscal year: $2,509,548
 
    State the aggregate market value of the voting stock held by non-affiliates
computed by reference to the price at which the stock was sold, or the average
bid and ask prices of such stock, as of a specified date within 60 days. (SEE
definition of affiliate in Rule 12b-2 of the Exchange Act): $7,100,000 AS OF
MARCH 14, 1997
 
                   (APPLICABLE ONLY TO CORPORATE REGISTRANTS)
 
    State the number of shares outstanding of each of the registrant's classes
of common stock, as of the latest practicable date: 1,420,000 SHARES OF COMMON
STOCK AS OF MARCH 14, 1997
 
                      DOCUMENTS INCORPORATED BY REFERENCE
                                      NONE
 
    Transitional Small Business Disclosure Format (check one) Yes / / No /X/
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
ITEM 9. DIRECTORS, EXECUTIVE OFFICERS, PROMOTERS AND CONTROL PERSONS;
COMPLIANCE WITH SECTION 16(A) OF THE EXCHANGE ACT
 
    The following table sets forth certain information regarding the directors
and executive officers of the Company.
 
<TABLE>
<CAPTION>
NAME                                               AGE                         OFFICE                      DIRECTOR SINCE
- ---------------------------------------------      ---      ---------------------------------------------  ---------------
<S>                                            <C>          <C>                                            <C>
Vernon R. Beck...............................          55   President, Treasurer and Director                      1988
John Parsinen................................          54   Vice President, Secretary and Director                 1988
Orvin J. Hall................................          70   Director                                               1990
Kurt Schoenrock..............................          64   Director                                               1990
Kenneth D. Wethe.............................          55   Director                                               1990
Allen C. Gehrke..............................          62   Director                                               1995
</TABLE>
 
    VERNON R. BECK is Chairman of the Board of Directors of the Company. Mr.
Beck has served as President of the Company since 1988 and as President of Crown
Advisors, Inc., the Company's advisor, since its inception in 1988. Since 1976,
Mr. Beck has been President of Vernon Beck & Associates, Inc. a commercial
mortgage banking and real estate development firm, which has developed and
financed numerous commercial real estate projects. Mr. Beck is a former
commercial loan officer with IDS Mortgage Corporation and senior analyst with
Northwestern National Life Insurance Company. Mr. Beck is also Vice President of
Enterprise Maintenance, LLC, a company which provides maintenance services to
commercial buildings.
 
    JOHN PARSINEN has over 29 years of experience in commercial real estate. Mr.
Parsinen has developed and owns various real estate projects. Mr. Parsinen has
been a senior attorney at Parsinen Kaplan Levy Rosberg & Gotlieb, P.A.
(Minneapolis, Minnesota) since it was formed in 1982. Mr. Parsinen specializes
in commercial real estate and represents mortgage lenders, brokers, and
developers in all types of residential and commercial transactions. Mr. Parsinen
owns 50% of Guaranty Title, Inc., a Minneapolis-based real estate title
insurance company. Mr. Parsinen was a general partner of Earle Brown Commons
Limited Partnership II, which owned and operated an elderly housing facility in
Brooklyn Center, MN. In 1994, the limited partnership initiated a Chapter 11
bankruptcy reorganization proceeding to restructure certain tax and debt
obligations. The bankruptcy was dismissed in 1995 and the project was sold. Mr.
Parsinen is Vice President of Crown Advisors, Inc., the Company's advisor, and
also an owner of Enterprise Maintenance, LLC.
 
    ORVIN J. HALL has over 31 years of real estate experience. Mr. Hall is now
retired from Towle Real Estate, a Minneapolis-based real estate management
company. Mr. Hall has been a real estate sales associate for several agencies
since 1980. Prior to that, Mr. Hall worked as Mortgage Branch Manager for
Investors Diversified Services, Inc. for 14 years, Mortgage Underwriter at
Northwestern National Life Insurance Company for five years and worked for five
years at Equitable Life Assurance Society of the United States. Mr. Hall is a
Member of the Appraisal Institute (MAI).
 
    KURT SCHOENROCK has over 31 years in real estate activities. Mr. Schoenrock
is currently an officer and director of Suncoast Appraisers, a full line real
estate appraisal and consulting firm in St. Petersburg, Florida. Prior to
starting his own appraisal firm, Mr. Schoenrock, for approximately 20 years, was
the senior real estate appraiser for Aid Association for Lutherans (AAL), the
world's largest fraternal association with assets exceeding $3.5 billion. Mr.
Schoenrock is a licensed real estate broker in the State of Florida. Mr.
Schoenrock is a Member of the Appraisal Institute (MAI).
 
    KENNETH D. WETHE is a certified public accountant (CPA). He has a master's
degree in business administration (MBA) from Pepperdine University and has over
26 years of experience in the group insurance and employee benefits area. Mr.
Wethe is a Fellow of the Life Office Management Institute. Since 1990, Mr. Wethe
has been the owner and principal officer of Wethe & Associates, a Dallas-based
firm providing independent risk management, insurance and employee benefit
services to school districts
 
                                       2
<PAGE>
and governmental agencies. Since 1988, Mr. Wethe also has been a consultant to
Robert W. Lazarus & Associates in the area of employee benefits.
 
    ALLEN C. GEHRKE has over 43 years of real estate construction and
development experience. Mr. Gehrke is a private investor who retired from
Fleming Companies, Inc., in 1995 after 35 years with the company. His most
recent position with the Milwaukee division of Fleming was Senior Vice President
of Corporate Development. His responsibilities included management of all
company physical assets, market research, store design and construction, fixture
purchasing and installation, lease negotiations and real estate financing. Prior
to his employment with Fleming Companies, he was in the construction business
for 7 years with Midwest Contractors and L.A. Construction Co. of Milwaukee. Mr.
Gehrke is a former director of United Cerebral Palsy, Milwaukee Yacht Club, and
Keep Greater Milwaukee Beautiful.
 
              SECTION 16(A) BENEFICIAL OWNERSHIP REPORT COMPLIANCE
 
    Section 16(a) of the Exchange Act requires the Company's directors and
executive officers to file reports of changes in beneficial ownership of the
Company's common stock with the Securities and Exchange Commission. Based on
information provided to the Company, the Company is not aware of any executive
officer or director of the Company who failed to timely file any report required
to be filed.
 
ITEM 10. EXECUTIVE COMPENSATION
 
    No individual officer of the Company was paid any cash or other compensation
for the years ended December 31, 1994, 1995 or 1996. Mr. Beck and Mr. Parsinen
each received options to purchase 2,500 shares of Common Stock from the Company
pursuant to the Company's Stock Option Plan for Directors during the year ended
December 31, 1996. The options become exercisable May 20, 1997 at an option
price of $5.625 per share. No officer of the Company has received options or
warrants to purchase securities of the Company by reason of that person's
position as an officer, and no options or warrants held by officers of the
Company were exercised, adjusted or repriced in 1994, 1995 or 1996.
 
                         CERTAIN INFORMATION REGARDING
                     THE BOARD OF DIRECTORS AND COMMITTEES
 
    AUDIT COMMITTEE.  The Company has a standing Audit Committee which currently
consists of Kenneth D. Wethe (Chairman) and Orvin J. Hall. The Audit Committee
reviews, recommends and reports to the board on (1) independent auditors, (2)
the quality and effectiveness of internal controls, (3) engagement or discharge
of the independent auditors, (4) professional services provided by the
independent auditors, and (5) the review and approval of major changes in the
Company's accounting principles and practices. During 1996, the Audit Committee
held one meeting.
 
    The Board presently does not have a Compensation Committee and acts as its
own Nominating Committee.
 
    During the year ended December 31, 1996, the Board of the Company held five
regular meetings and four special meetings. No director attended fewer than 75%
of the aggregate number of meetings of the Board and the committees on which
they serve.
 
COMPENSATION OF DIRECTORS
 
    DIRECTORS' FEES AND EXPENSES.
 
    Directors who are not officers of the Company receive an annual fee of
$3,000, plus $500 for each meeting (other than telephonic Board meetings) they
attend. Directors incurring travel expenses in connection with their duties as
directors of the Company are reimbursed in full. The total directors' fees and
travel expense reimbursement in the year 1996 was approximately $18,000. Mr.
Beck and Mr. Parsinen received no fees in connection with board meetings for
1996.
 
                                       3
<PAGE>
AUTOMATIC OPTION GRANTS
 
    Since 1993, the Company has maintained a Stock Option Plan for Directors. A
total of 75,000 shares of the Company's common stock are reserved for issuance
under this plan. Each director of the Company is eligible to participate in the
plan. The plan provides that each director will receive, upon initial election
or appointment, an option to purchase 2,500 shares of the Company's common stock
at the then fair market value of the common stock. The plan also provides for
the grant of an option to purchase an additional 2,500 shares of the Company's
common stock upon each director's re-election to the Board. The options become
exercisable in full one year after date of grant and expire ten years from the
date of grant.
 
    The following table sets forth outstanding options granted to officers and
directors of the Company under the Stock Option Plan for Directors:
 
<TABLE>
<CAPTION>
                                                                                               EXERCISE
                                                                       NUMBER OF    VESTING      PRICE     EXPIRATION
NAME                                                                  SECURITIES     DATE      PER SHARE      DATE
- --------------------------------------------------------------------  -----------  ---------  -----------  -----------
<S>                                                                   <C>          <C>        <C>          <C>
 
Vernon R. Beck......................................................       2,500     5-24-94   $    9.50      5-24-03
                                                                           2,500     5-16-95        9.87      5-16-04
                                                                           2,500     5-15-96        5.38      5-15-05
                                                                           2,500     5-20-97        5.63      5-20-06
 
John Parsinen.......................................................       2,500     5-24-94        9.50      5-24-03
                                                                           2,500     5-16-95        9.87      5-16-04
                                                                           2,500     5-15-96        5.38      5-15-05
                                                                           2,500     5-20-97        5.63      5-20-06
 
Kenneth D. Wethe....................................................       2,500     5-24-94        9.50      5-24-03
                                                                           2,500     5-16-95        9.87      5-16-04
                                                                           2,500     5-15-96        5.38      5-15-05
                                                                           2,500     5-20-97        5.63      5-20-06
 
Orvin J. Hall.......................................................       2,500     5-24-94        9.50      5-24-03
                                                                           2,500     5-16-95        9.87      5-16-04
                                                                           2,500     5-15-96        5.38      5-15-05
                                                                           2,500     5-20-97        5.63      5-20-06
 
Kurt Schoenrock.....................................................       2,500     5-24-94        9.50      5-24-03
                                                                           2,500     5-16-95        9.87      5-16-04
                                                                           2,500     5-15-96        5.38      5-15-05
                                                                           2,500     5-20-97        5.63      5-20-06
 
Allen C. Gehrke.....................................................       2,500     5-15-96        5.38      5-15-05
                                                                           2,500     5-20-97        5.63      5-20-06
</TABLE>
 
                                       4
<PAGE>
ITEM 11. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
    The following table sets forth certain information as of March 31, 1997,
relating to the number of shares of Common Stock beneficially owned by each
director and by all executive officers and directors as a group. The Company is
not aware of any beneficial owner of more than five percent (5%) of the
outstanding shares of the Company's common stock.
 
                             SHARES OF COMMON STOCK
 
<TABLE>
<CAPTION>
                                                                                           BENEFICIALLY OWNED
                                                                                        ------------------------
 
<S>                                                                                     <C>          <C>
DIRECTORS AND OFFICERS                                                                   NUMBER(1)     PERCENT
- --------------------------------------------------------------------------------------  -----------  -----------
 
Vernon R. Beck........................................................................      23,116(  (3)        1.6%
 
John Parsinen.........................................................................      20,687(  (3)        1.5%
 
Orvin J. Hall.........................................................................       7,500(  (4)          *
 
Kurt Schoenrock.......................................................................       7,606(  (4)          *
 
Kenneth D. Wethe......................................................................       7,724(  (4)          *
 
Allen C. Gehrke.......................................................................       2,750(  (5)          *
 
All executives, officers and directors as a group (seven individuals).................      69,726(6)        4.9%
</TABLE>
 
- ------------------------
 
*   Less than one percent (1%)
 
(1) Unless otherwise noted, each person or group identified possesses sole
    voting and investment power with respect to such shares.
 
(2) Includes fifty percent of the 26,374 shares of Common Stock owned by Crown
    Advisors, Inc., the Company's Advisor, which is owned equally by Messrs.
    Beck and Parsinen. See "Certain Transactions and Related Transactions."
 
(3) Does not include 2,500 shares of Common Stock issuable upon exercise of
    options granted in 1996 under the Company's Stock Option Plan for Directors
    as they are not presently exercisable.
 
(4) Includes 7,500 shares of common stock issuable upon exercise of presently
    exercisable options.
 
(5) Includes 2,500 shares of common stock issuable upon exercise of presently
    exercisable options.
 
(6) Includes 40,000 shares of common stock issuable upon exercise of presently
    exercisable options.
 
ITEM 12. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
    Effective December 23, 1991, the Company issued five-year warrants to each
of Vernon R. Beck, John Parsinen, Orvin J. Hall, Kurt Schoenrock and Kenneth D.
Wethe to purchase 10,000, 10,000, 2,500, 2,500 and 2,500 shares of Common Stock,
respectively, at a purchase price of $10 per share. These warrants expired on
December 23, 1996. Options to purchase 2,500 shares of Common Stock were also
granted to the Company's directors in 1993, 1994, 1995 and 1996 under the
Company's Stock Option Plan for Directors. These options expire ten years after
their issue date. See the table under "CERTAIN INFORMATION REGARDING THE BOARD
OF DIRECTORS AND COMMITTEES".
 
    Subject to the supervision of the Company's Board of Directors, the business
of the Company is managed by the Advisor, which provides investment advisory and
administrative services to the Company.
 
                                       5
<PAGE>
The Advisor is owned by John Parsinen and Vernon R. Beck, officers and directors
of the Company. As of March 31, 1997, the Advisor employed three persons on a
full-time basis.
 
    Pursuant to an advisory agreement, the Company must pay the Advisor certain
advisory fees, expenses and performance fees, as defined in the agreement and a
3% fee for each real estate acquisition or disposition. For each of the years
ended December 31, 1996 and 1995, the advisory fee was $250,000. For the year
ended December 31, 1994, the advisory fee was $240,000 and the acquisition fee
was $271,000. There have been no performance fees in any of the above years.
 
    Upon termination of the advisory agreement, the Company must pay a fee equal
to 3% of the invested real estate assets plus 25% of the increase in value of
invested real estate assets from the date of acquisition to the date of
termination.
 
    Parsinen Kaplan Levy Rosberg & Gotlieb, P.A. was compensated for legal
services provided to the Company in connection with the 1991 initial public
offering of its Common Stock and the acquisition of the Company's properties in
1992, 1993 and 1994. The firm continues to provide legal services to the
Company, and incurred legal fees of $9,000 in 1996 and $0 in 1995. John Parsinen
is an officer, director and shareholder of Parsinen Kaplan Levy Rosberg &
Gotlieb, P.A.
 
    See also Item 10.
 
                                       6
<PAGE>
                                   SIGNATURES
 
    In accordance with Section 13 or 15(d) of the Exchange Act, the registrant
caused this report to be signed on its behalf by the undersigned, thereunto duly
authorized.
 
                                ROYALE INVESTMENTS, INC.
 
                                By:              /s/ VERNON R. BECK
                                     -----------------------------------------
                                                   Vernon R. Beck
                                                   PRESIDENT AND
                                              CHIEF EXECUTIVE OFFICER
 
Date: May 16, 1997

<PAGE>
                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                    FORM 10-QSB
 
/X/ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange
                                  Act of 1934
               For the Quarterly Period Ended September 30, 1997
 
/ / Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange
                                  Act of 1934
 
                            ------------------------
 
                         Commission File Number 0-20047
                            ------------------------
 
                            ROYALE INVESTMENTS, INC.
 
             (Exact name of Registrant as specified in its Charter)
 
<TABLE>
<S>                          <C>
         MINNESOTA              41-1691930
      (State or other        (I.R.S. Employer
      jurisdiction of         Identification
     incorporation or              No.)
       organization)
</TABLE>
 
              ONE LOGAN SQUARE, SUITE 1105, PHILADELPHIA, PA 19103
 
                    (Address of principal executive offices)
 
                           TELEPHONE: (215) 567-1800
 
              (Registrant's telephone number, including area code)
 
                 3430 LIST PLACE, MINNEAPOLIS, MINNESOTA 55416
 
         (Former name or former address, if changed since last report)
 
Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such requirements
for the past 90 days. Yes __X__ No ______
 
    The number of shares outstanding of the Registrant's stock as of November 4,
1997 was 2,266,083 Shares of Common Stock.
<PAGE>
                            ROYALE INVESTMENTS, INC.
 
                                  FORM 10-QSB
 
               FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 1997
 
                                     INDEX
 
<TABLE>
<CAPTION>
                                                                                                                PAGE
                                                                                                                -----
<S>                                                                                                          <C>
PART I: FINANCIAL INFORMATION
 
  Item 1.  Financial Statements:
 
    Balance Sheets as of September 30, 1997 (unaudited) and December 31, 1996..............................           3
 
    Statements of Operations for the Three Months Ended September 30, 1997 (unaudited) and September 30,
     1996 (unaudited)......................................................................................           4
 
    Statements of Operations for the Nine Months Ended September 30, 1997 (unaudited) and September 30,
     1996 (unaudited)......................................................................................           4
 
    Statements of Cash Flows for the Nine Months Ended September 30, 1997 (unaudited) and September 30,
     1996 (unaudited)......................................................................................           5
 
    Notes to Financial Statements..........................................................................           6
 
  Item 2:  Management's Discussion and Analysis of Financial Condition and Results of Operations...........           8
 
PART II: OTHER INFORMATION
</TABLE>
 
<TABLE>
<C>        <S>                                                                          <C>
  Item 1.  Legal Proceedings..........................................................          11
  Item 2.  Changes in Securities......................................................          11
  Item 3.  Defaults Upon Senior Securities............................................          11
  Item 4.  Submission of matters to a Vote of Security Holders........................          11
  Item 5.  Other Information..........................................................          11
  Item 6.  Exhibits and Reports on Form 8-K...........................................          11
 
SIGNATURES............................................................................          13
</TABLE>
 
                                       2
<PAGE>
                         PART I. FINANCIAL INFORMATION
                          ITEM 1. FINANCIAL STATEMENTS
 
                            ROYALE INVESTMENTS, INC.
 
                                 BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                                                                    DECEMBER 31,
                                                                                                        1996
                                                                                     SEPTEMBER 30,  -------------
                                                                                         1997
                                                                                     -------------
                                                                                      (UNAUDITED)
<S>                                                                                  <C>            <C>
                                                     ASSETS
Assets:
  Investments in real estate:
    Land and buildings.............................................................  $  25,027,358  $  25,027,358
    Less: accumulated depreciation.................................................      2,373,269      1,957,448
                                                                                     -------------  -------------
      Net investments in real estate...............................................     22,654,089     23,069,910
  Cash and cash equivalents........................................................        496,956        258,275
  Marketable securities............................................................       --              479,379
  Deferred costs and other assets..................................................        535,113        389,517
                                                                                     -------------  -------------
      Total Assets.................................................................  $  23,686,158  $  24,197,081
                                                                                     -------------  -------------
                                                                                     -------------  -------------
                                      LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities:
  Mortgage notes payable...........................................................  $  14,448,265  $  14,658,250
  Dividends payable................................................................        177,500        177,500
  Accounts payable and other liabilities...........................................        158,431        189,977
                                                                                     -------------  -------------
      Total Liabilities............................................................     14,784,196     15,025,727
                                                                                     -------------  -------------
Stockholders' Equity:
  Common stock--$.01 par value per share
  Authorized--50,000,000 shares
  Issued and outstanding--1,420,000 shares.........................................         14,200         14,200
  Additional paid-in capital.......................................................     12,353,398     12,353,398
  Distributions in excess of accumulated earnings..................................     (3,465,636)    (3,196,244)
                                                                                     -------------  -------------
      Total Stockholders' Equity...................................................      8,901,962      9,171,354
                                                                                     -------------  -------------
      Total Liabilities and Stockholders' Equity...................................  $  23,686,158  $  24,197,081
                                                                                     -------------  -------------
                                                                                     -------------  -------------
</TABLE>
 
   The accompanying notes are an integral part of these financial statements.
 
                                       3
<PAGE>
                            ROYALE INVESTMENTS, INC.
 
                            STATEMENTS OF OPERATIONS
 
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                  THREE MONTHS                NINE MONTHS
                                                                     ENDED                       ENDED
                                                                 SEPTEMBER 30,               SEPTEMBER 30,
                                                           --------------------------  --------------------------
<S>                                                        <C>           <C>           <C>           <C>
                                                               1997          1996          1997          1996
                                                           ------------  ------------  ------------  ------------
Revenues:
  Rental income..........................................  $    628,441  $    616,525  $  1,880,805  $  1,844,187
  Interest income........................................         5,082         7,858        18,045        25,120
                                                           ------------  ------------  ------------  ------------
    Total Revenue........................................       633,523       624,383     1,898,850     1,869,307
Expenses:
  Operations and management..............................        93,366        79,153       254,858       269,276
  Mortgage interest......................................       305,302       310,941       920,237       936,812
  Depreciation and amortization..........................       141,770       141,771       425,312       425,312
  Administrative and general.............................         8,035         3,715        35,335        23,987
                                                           ------------  ------------  ------------  ------------
    Total Expenses.......................................       548,473       535,580     1,635,742     1,655,387
                                                           ------------  ------------  ------------  ------------
Net Income...............................................  $     85,050  $     88,803  $    263,108  $    213,920
                                                           ------------  ------------  ------------  ------------
                                                           ------------  ------------  ------------  ------------
Per Common Share:
  Net income.............................................  $       0.06  $       0.06  $       0.19  $       0.15
                                                           ------------  ------------  ------------  ------------
                                                           ------------  ------------  ------------  ------------
  Dividends declared.....................................  $       0.13  $       0.13  $       0.38  $       0.38
                                                           ------------  ------------  ------------  ------------
                                                           ------------  ------------  ------------  ------------
Weighted Average Number of Common Shares Outstanding.....     1,422,297     1,420,000     1,420,314     1,420,000
                                                           ------------  ------------  ------------  ------------
                                                           ------------  ------------  ------------  ------------
</TABLE>
 
   The accompanying notes are an integral part of these financial statements.
 
                                       4
<PAGE>
                            ROYALE INVESTMENTS, INC.
 
                            STATEMENTS OF CASH FLOWS
 
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                                              NINE MONTHS ENDED
                                                                                                SEPTEMBER 30,
                                                                                            ----------------------
<S>                                                                                         <C>         <C>
                                                                                               1997        1996
                                                                                            ----------  ----------
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income..............................................................................  $  263,108  $  213,920
  Adjustments to reconcile net income to net cash provided by operating activities:
    Depreciation and amortization.........................................................     425,312     425,312
    Amortization of marketable securities.................................................      (7,621)    (20,842)
    Changes in assets and liabilities:
      (Increase) decrease in accounts receivable..........................................     (38,582)    (54,290)
      (Increase) decrease in other assets.................................................       2,426        (407)
      Increase (decrease) in accounts payable and other liabilities.......................     (31,546)    (11,899)
                                                                                            ----------  ----------
        Net cash provided by operating activities.........................................     613,097     551,794
                                                                                            ----------  ----------
CASH FLOWS FROM INVESTING ACTIVITIES:
  Proceeds from sales of marketable securities............................................     487,000     588,000
  Purchase of marketable securities.......................................................      --        (524,272)
  Costs associated with new ventures......................................................    (118,931)     --
                                                                                            ----------  ----------
        Net cash provided by investing activities.........................................     368,069      63,728
                                                                                            ----------  ----------
CASH FLOW FROM FINANCING ACTIVITIES:
  Principal payments on mortgage loans....................................................    (209,985)   (197,193)
  Dividends paid to shareholders..........................................................    (532,500)   (532,500)
                                                                                            ----------  ----------
        Net cash used in financing activities.............................................    (742,485)   (729,693)
                                                                                            ----------  ----------
NET INCREASE (DECREASE) IN CASH...........................................................     238,681    (114,171)
CASH AND CASH EQUIVALENTS:
  Beginning of period.....................................................................     258,275     257,970
                                                                                            ----------  ----------
  End of period...........................................................................  $  496,956  $  143,799
                                                                                            ----------  ----------
                                                                                            ----------  ----------
SUPPLEMENTARY DATA:
  Income taxes paid.......................................................................  $    3,100  $    4,542
                                                                                            ----------  ----------
                                                                                            ----------  ----------
  Interest paid...........................................................................  $  921,558  $  944,952
                                                                                            ----------  ----------
                                                                                            ----------  ----------
</TABLE>
 
   The accompanying notes are an integral part of these financial statements.
 
                                       5
<PAGE>
                            ROYALE INVESTMENTS, INC.
 
                         NOTES TO FINANCIAL STATEMENTS
 
                      NINE MONTHS ENDED SEPTEMBER 30, 1997
 
                                  (UNAUDITED)
 
1. ORGANIZATION AND NATURE OF OPERATIONS
 
    Royale Investments, Inc. (the "Company"), a Minnesota corporation, was
formed in 1988, to acquire a portfolio of income-producing commercial real
estate properties. The Company has elected to qualify as a real estate
investment trust ("REIT") under Sections 856-860 of the Internal Revenue Code
and intends to remain so qualified.
 
    As of September 30, 1997, the Company's portfolio was comprised of seven
properties leased to operators of seven major retail food stores under long-term
operating lease agreements. The leases have initial terms of 17 to 20 years and
expire between 2006 and 2014.
 
    Subsequent to September 30, 1997, the Company closed on the acquisition of a
portfolio of 10 properties, representing the Mid-Atlantic suburban office
operations of The Shidler Group, a national real estate investment firm (the
"Shidler Acquisition Properties"). In the transactions (the "Shidler
Transactions"), the Company became the sole general partner of and obtained a
20.6946% interest in FCO, L.P. ("FCO"), an operating partnership formed to
acquire and hold the Shidler Acquisition Properties (See Note 5).
 
2. GENERAL
 
    BASIS OF PRESENTATION
 
    The financial statements have been prepared by the Company without audit,
pursuant to the rules and regulations of the Securities and Exchange Commission.
Certain information and footnote disclosures normally included in the financial
statements prepared in accordance with generally accepted accounting principles
have been condensed or omitted pursuant to such rules and regulations, although
the Company believes that the disclosures are adequate to make the information
presented not misleading. In the opinion of the Company, all adjustments
(consisting solely of normal recurring matters) necessary to fairly present the
financial position of the Company as of September 30, 1997, and the results of
its operations and its cash flows for the three and nine months ended September
30, 1997 and 1996 have been included. The results of operations for such interim
periods are not necessarily indicative of the results for a full year. For
further information refer to the Company's financial statements and footnotes
thereto included in the Annual Report on Form 10-K (as amended by Form 10-K/A)
for the year ended December 31, 1996.
 
    CAPITALIZATION OF COSTS
 
    As of September 30, 1997, the Company had incurred $118,931 in costs
associated with its pursuit of the Shidler Acquisition Properties. Such costs
are included in deferred costs and other assets on the Company's balance sheet
as of September 30, 1997.
 
    NET INCOME PER COMMON SHARE
 
    Net income per common share is based on the weighted average number of
common shares ("Common Shares") outstanding adjusted to give effect to common
share equivalents. In February, 1997, the Financial Accounting Standards Board
issued Statement No. 128, "Earnings per Share", which is effective for financial
statements for periods ending after December 15, 1997. At that time, the Company
will be required to change the method currently used to compute and disclose
earnings per share and to restate all prior periods. The impact of Statement No.
128 on the calculation of primary and fully diluted earnings per share for the
interim periods presented is not expected to be material.
 
                                       6
<PAGE>
                            ROYALE INVESTMENTS, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                      NINE MONTHS ENDED SEPTEMBER 30, 1997
 
                                  (UNAUDITED)
 
2. GENERAL (CONTINUED)
    RECLASSIFICATIONS
 
    Certain previously reported amounts have been reclassified to conform to the
current presentation.
 
3. LINE OF CREDIT
 
    On April 10, 1997, the Company obtained a revolving credit agreement with a
bank whereby the Company can borrow up to $100,000 at an annual interest rate
equal to prime. Interest is payable monthly with the principal due April 10,
1998. At September 30, 1997, no amounts were borrowed against the note.
 
4. DIVIDENDS
 
    On September 25, 1997, the Company declared a cash dividend of $.125 per
common share payable on October 17, 1997, to stockholders of record as of
September 30, 1997.
 
5. SUBSEQUENT EVENTS
 
    On October 14, 1997, the Company closed on the acquisition of the Shidler
Acquisition Properties. As a result of the Shidler Transactions, the Company
became the sole general partner of and obtained a 20.6946% interest in FCO, an
operating partnership formed to acquire and hold the Shidler Acquisition
Properties.
 
    The Shidler Acquisition Properties were acquired subject to mortgage
indebtedness of $100 million. The loan is a non-recourse mortgage loan
collateralized by the real estate assets of the Shidler Acquisition Properties.
The loan provides for monthly payments of interest only at a fixed rate of 7.5%
per annum. The loan matures on October 13, 2000 and provides for two one-year
extension options, subject to certain conditions.
 
    In connection with the Shidler Transactions, the Company issued 600,000
Common Shares (valued at $5.50 per share, aggregate of $3.3 million) and FCO
issued approximately 3.2 million common partnership units ("Common Units")
(valued at $5.50 per unit, aggregate of $17.5 million) and 2.1 million preferred
partnership units ("Preferred Units") (valued at $25.00 per unit, aggregate of
$52.5 million). The Preferred Units may be converted, on or after, October 1,
1999, into 3.5714 Common Units for each Preferred Unit. Subject to certain
conditions, beginning on September 1, 1998, Common Units are convertible into
one Common Share (or an equivalent cash value, at the sole discretion of the
Company) for each Common Unit. Certain Common Units and Preferred Units contain
certain restrictions through November 2000.
 
    Concurrently with the Shidler Transactions, the Company issued 273,729
Common Shares (valued at $5.50 per share, aggregate of $1.5 million) in exchange
for the assets of Crown Advisors, Inc. ("Crown"), an affiliate of the Company,
previously acting as investment advisor to the Company and assisting in the
management operations. The contract between Crown and the Company was terminated
and the Company entered into a property management agreement with Glacier
Realty, LLC ("Glacier"), all of the interests in which are owned by two current
officers of the Company, one of whom is also a current director. Further, the
Company retired 27,646 Common Shares previously held by Crown at the time it was
acquired.
 
    The property management agreement with Glacier provides for Glacier to
manage the seven net lease retail assets of Royale for a term of five years with
a minimum fee of $250,000 per annum.
 
                                       7
<PAGE>
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
  OF OPERATIONS
 
    This Form 10-QSB contains forward looking statements within the meaning of
Section 27A of the Securities Act of 1933 and Section 21E of the Securities
Exchange Act of 1934. The words "believe", "expect", anticipate", "intend",
"estimate" and other expressions which are predictions of or indicate future
events and trends and which do not relate to historical matters identify
forward-looking statements. The Company's actual results could differ materially
from those set forth in the forward-looking statements. Certain factors that
might cause such a difference include the following: real estate investment
considerations, such as the effect of economic and other conditions in the
market area on cash flows and values; the need to renew leases or relet space
upon the expiration of current leases; the ability of a property to generate
revenues sufficient to meet debt service payments and other operating expenses;
and risks associated with borrowings, such as the possibility that the Company
will not have sufficient funds available to make principal payments on
outstanding debt or outstanding debt may be refinanced at higher interest rates
or otherwise on terms less favorable to the Company.
 
    The following discussion and analysis of the financial condition and results
of operations should be read in conjunction with the accompanying financial
statements and notes thereto.
 
RESULTS OF OPERATIONS
 
    COMPARISON OF THREE AND NINE MONTHS ENDED SEPTEMBER 30, 1997 AND SEPTEMBER
     30, 1996
 
    During the three and nine month periods ended September 30, 1997 and 1996,
the Company owned and leased seven properties in five states to operators of
retail food stores.
 
    Net income for the three and nine months ended September 30, 1997, was
$85,050 and $263,108 respectively, as compared to net income of $88,803 and
$213,920 for the corresponding periods in 1996. The increase in net income for
the nine month period is primarily due to improved operating results of the
Company's properties as a result of scheduled rent increases and reduced
mortgage interest as a result of declining principal balances.
 
    Revenues for the three and nine month periods ended September 30, 1997,
increased by 1.5% and 1.6%, respectively, over the comparable periods of 1996,
due to scheduled increases in rental income, which was partially offset by
decreases in interest income. The impact of the straight-line rent adjustment
increased revenues by $49,915 for the nine months ended September 30, 1997, and
by $49,915 for the nine months ended September 30, 1996.
 
    Expenses during the quarter ended September 30, 1997, increased by 2.4%, as
compared to the corresponding period in 1996. Expenses for the nine months ended
September 30, 1997, decreased by 1.2%, compared to the corresponding period in
1996. The decrease in expenses for the nine month period is primarily the result
of decreased mortgage interest due to declining principal balances and decreased
operations and management expenses primarily due to the reimbursement of certain
fees which the Company is obligated to make in connection with its lease
guarantees on two of the Company's properties. This decrease in expenses was
offset, in part, by an increase in administrative and general expenses primarily
attributable to public filing costs.
 
STATEMENT OF CASH FLOWS
 
    During the nine months ended September 30, 1997, and September 30, 1996, the
Company generated $613,097 and $551,794, respectively, in cash flow from
operating activities. The increase is primarily the result of scheduled
increases in rental income and timing differences in receipts and disbursements
from year to year.
 
    Net cash provided by investing activities increased to $368,069 for the nine
months ended September 30, 1997, as compared to $63,728 for the nine months
ended September 30, 1996. This increase is
 
                                       8
<PAGE>
primarily a result of the Company's change from investing excess cash balances
in U.S. Treasury Bills with maturities of six months, to investing excess cash
balances in cash equivalents with maturities of 30 days or less.
 
    Net cash used in financing activities totaled $742,485 and $729,693 for the
nine months ended September 30, 1997, and September 30, 1996, respectively. The
increased use is wholly due to increased mortgage amortization.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    The Company believes that its cash flow from operations is adequate to fund
its short-term liquidity requirements for the foreseeable future. The Company's
properties are all leased on a triple-net basis, which places the risk of rising
property costs, such as maintenance, insurance and property taxes, on the
tenant. The leases generally provide that the tenant is also responsible for
roof and structural repairs. Cash flow from operations is generated primarily
from rental revenues and operating expense reimbursements from tenants and
interest income earned on the Company's cash investments. The Company intends to
use its cash funds to meet its principal short-term liquidity needs which are to
fund operations and management, and general and administrative expenses, debt
service requirements and the minimum distribution to shareholders required to
maintain the Company's REIT qualifications under the Internal Revenue Code.
 
    For the quarter ended September 30, 1997, the Company declared distributions
totaling $0.125 per Common Share amounting to $177,500.
 
FUNDS FROM OPERATIONS
 
    Management generally considers Funds from Operations ("FFO") as one measure
of REIT performance. The Company has adopted the NAREIT definition of FFO and
has used this definition for all periods presented in the financial statements
included herein. FFO is calculated as net income (loss) adjusted for
depreciation expense attributable to real property, amortization expense
attributable to capitalized leasing costs, gains on sales of real estate
investments and extraordinary and non-recurring items. FFO should not be
considered an alternative to net income as an indication of the Company's
performance or to cash flows as a measure of liquidity.
 
    FFO for the three and nine months ended September 30, 1997, and September
30, 1996, is summarized in the following table:
 
<TABLE>
<CAPTION>
                                                                  THREE MONTHS                NINE MONTHS
                                                                     ENDED                       ENDED
                                                                 SEPTEMBER 30,               SEPTEMBER 30,
                                                           --------------------------  --------------------------
<S>                                                        <C>           <C>           <C>           <C>
                                                               1997          1996          1997          1996
                                                           ------------  ------------  ------------  ------------
Net Income...............................................  $     85,050  $     88,803  $    263,108  $    213,920
Add:
  Depreciation attributable to real property.............       138,606       138,607       415,821       415,821
                                                           ------------  ------------  ------------  ------------
Funds from Operations....................................  $    223,656  $    227,410  $    678,929  $    629,741
                                                           ------------  ------------  ------------  ------------
                                                           ------------  ------------  ------------  ------------
Weighted Average Number of Common Shares Outstanding.....     1,422,297     1,420,000     1,420,314     1,420,000
                                                           ------------  ------------  ------------  ------------
                                                           ------------  ------------  ------------  ------------
Funds from Operations per share..........................  $       0.16  $       0.16  $       0.48  $       0.44
                                                           ------------  ------------  ------------  ------------
                                                           ------------  ------------  ------------  ------------
</TABLE>
 
SUBSEQUENT EVENTS
 
    As reported on Current Form 8-K dated October 28, 1997, on October 14, 1997,
the Company closed on the acquisition of the Shidler Acquisition Properties. As
a result of the Shidler Transactions, the
 
                                       9
<PAGE>
Company became the sole general partner of and obtained a 20.6946% interest in
FCO, an operating partnership formed to acquire and hold the Shidler Acquisition
Properties.
 
    The Shidler Acquisition Properties were acquired subject to mortgage
indebtedness of $100 million. The loan is a non-recourse mortgage loan
collateralized by the real estate assets of the Shidler Acquisition Properties.
The loan provides for monthly payments of interest only at a fixed rate of 7.5%
per annum. The loan matures on October 13, 2000 and provides for two one-year
extension options, subject to certain conditions.
 
    In connection with the Shidler Transactions, the Company issued 600,000
Common Shares (valued at $5.50 per share, aggregate of $3.3 million) and FCO
issued approximately 3.2 million Common Units (valued at $5.50 per unit,
aggregate of $17.5 million) and 2.1 million Preferred Units (valued at $25.00
per unit, aggregate of $52.5 million). The Preferred Units may be converted, on
or after, October 1, 1999, into 3.5714 Common Units for each Preferred Unit.
Subject to certain conditions, beginning on September 1, 1998, Common Units are
convertible into one Common Share (or an equivalent cash value, at the sole
discretion of the Company) for each Common Unit. Certain Common Units and
Preferred Units contain certain restrictions through November 2000.
 
    Concurrently with the Shidler Transactions, the Company issued 273,729
Common Shares (valued at $5.50 per share, aggregate of $1.5 million) in exchange
for the assets of Crown, an affiliate of the Company, previously acting as
investment advisor to the Company and assisting in the management operations.
The contract between Crown and the Company was terminated and the Company
entered into a property management agreement with Glacier, all of the interests
in which are owned by two current officers of the Company, one of whom is also a
current director. Further, the Company retired 27,646 Common Shares previously
held by Crown at the time it was acquired.
 
    The property management agreement with Glacier provides for Glacier to
manage the seven net lease retail assets of Royale for a term of five years with
a minimum fee of $250,000 per annum.
 
                                       10
<PAGE>
                           PART II. OTHER INFORMATION
 
ITEM 1. LEGAL PROCEEDINGS
 
    The Company is not currently involved (nor was it involved at September 30,
1997) in any material legal proceedings nor, to the Company's knowledge, is any
material legal proceeding currently threatened against the Company (other than
routine litigation arising in the ordinary course of business, substantially all
of which is expected to be covered by liability insurance).
 
ITEM 2. CHANGES IN SECURITIES
 
    (a) Not applicable.
 
    (b) Not applicable
 
    (c) On October 14, 1997, in connection with the Shidler Transactions, the
Company issued 600,000 Common Shares in connection with the formation of FCO and
issued 273,729 Common Shares in connection with the Company's acquisition of
Crown. Further, the Company retired 27,646 Common Shares.
 
ITEM 3. DEFAULTS UPON SENIOR SECURITIES
 
    None
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
    Not applicable
 
ITEM 5. OTHER INFORMATION
 
    Not applicable
 
ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K
 
    a)  Exhibits filed with Form 10-QSB
 
<TABLE>
<CAPTION>
 EXHIBIT NUMBER                                               DESCRIPTION
- -----------------  -------------------------------------------------------------------------------------------------
<C>                <S>
 
         2.1*      Formation/Contribution Agreement dated September 7, 1997, as amended, by and among Royale
                   Investments, Inc., H/SIC Corporation, a Delaware corporation, Strategic Facility Investors, Inc.,
                   a Delaware corporation, the sole general partner of Blue Bell Investment Company, L.P., a
                   Delaware limited partnership, South Brunswick Investment Company, LLC, a New Jersey limited
                   liability company, a general partner of South Brunswick Investors, L.P., a Delaware limited
                   partnership, ComCourt Investment Corporation, a Pennsylvania corporation, the sole general
                   partner of ComCourt Investors, L.P., a Delaware limited partnership, and Gateway Shannon
                   Development Corporation, a Pennsylvania corporation, the sole general partner of 6385 Flank
                   Drive, L.P., a Pennsylvania limited partnership, with exhibits, as amended by the Amendment
                   thereto dated October 13, 1997.
 
         2.2*      Agreement and Plan of Reorganization between the Company and Crown Advisors, Inc.
 
         2.3*      FCO, L.P. Partnership Agreement dated October 14, 1997.
 
         2.4*      Amended and Restated Partnership Agreement of Blue Bell Investment Company, L.P.
</TABLE>
 
                                       11
<PAGE>
                     PART II. OTHER INFORMATION (CONTINUED)
 
<TABLE>
<CAPTION>
 EXHIBIT NUMBER                                               DESCRIPTION
- -----------------  -------------------------------------------------------------------------------------------------
<C>                <S>
         2.5*      Amended and Restated Partnership Agreement of South Brunswick Investors, L.P.
 
         2.6*      Amended and Restated Partnership Agreement of ComCourt Investors, L.P.
 
         2.7*      Amended and Restated Partnership Agreement of 6385 Flank Drive, L.P.
 
        10.1*      Clay W. Hamlin, III Employment Agreement dated October 14, 1997 with FCO, L.P.
 
        10.2*      Registration Rights Agreement dated October 14, 1997 for the benefit of certain shareholders of
                   the Company.
 
        10.3*      Management Agreement between the Company and Glacier Realty, LLC.
 
        10.4*      Senior Secured Credit Agreement dated October 13, 1997 (Exhibits and Schedules have been omitted
                   pursuant to Rule 6.01(b) (2) of Regulation S-K. Such Exhibits and Schedules are listed and
                   described in the Credit Agreement. The Company hereby agrees to furnish to the Securities and
                   Exchange Commission, upon its request, any or all such omitted Exhibits and Schedules.)
 
         20.*      Press Release dated October 14, 1997.
 
         27.1      Financial Data Schedule
</TABLE>
 
- ------------------------
 
*   Incorporated by reference to the same numbered Exhibit to the Company's
    Current Report on Form 8-K dated October 28, 1997.
 
    b)  Reports on Form 8-K.
 
    During the three months ended September 30, 1997, and through November 6,
1997, the Company filed the following:
 
    (i) a Current Report on Form 8-K dated October 28, 1997, (reporting under
Items 1, 2, and 7) regarding the Company's acquisition of the Shidler
Acquisition Properties, a portfolio of 10 properties, representing the
Mid-Atlantic suburban office operations of The Shidler Group, a national real
estate investment firm.
 
    (ii) a Current Report on Form 8-K dated November 6, 1997 (reporting under
Item 4) regarding the Company's change in certifying accountant.
 
                                       12
<PAGE>
                                   SIGNATURES
 
    Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused the report to be signed on its behalf by the
undersigned, thereunto duly authorized.
 
                                ROYALE INVESTMENTS, INC.
 
Date: November 6, 1997          By:  /s/ CLAY W. HAMLIN III
                                     -----------------------------------------
                                     Name: Clay W. Hamlin, III
                                     Title: President and Chief Executive
                                     Officer
                                          (Principal Executive Officer)
 
                                By:  /s/ THOMAS D. CASSEL
                                     -----------------------------------------
                                     Name: Thomas D. Cassel
                                     Title: Vice President Finance
                                          (Principal Financial and Accounting
                                     Officer)
 
                                       13

<PAGE>
                                                                    Exhibit 21


                           SUBSIDIARIES OF REGISTRANT



                                      NONE


<PAGE>
                                                                    EXHIBIT 23.2
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
We consent to the incorporation by reference in this registration statement of
Corporate Office Properties Trust on Form S-4 (the "Registration Statement") of
our report dated January 19, 1998 on our audits of the consolidated financial
statements of Royale Investments, Inc. (d/b/a Corporate Office Properties Trust,
Inc.) as of December 31, 1996 and 1995 and for each of the years in the three
year period ended December 31, 1996. We also consent to the incorporation by
reference in the Registration Statement of our report dated December 5, 1997 on
our audits of the combined financial statements of The Shidler Acquisition
Properties (Group) as of December 31, 1996 and 1995 and for each of the years in
the three year period ended December 31, 1996. We also consent to the inclusion
in the Registration Statement of our report dated February 4, 1998 on our audit
of the balance sheet of Corporate Office Properties Trust as of February 3,
1998. Further, we consent to the reference to our firm under the caption
"Experts."
 
Philadelphia, Pennsylvania
February 4, 1998
 
                                          COOPERS & LYBRAND L.L.P.

<PAGE>
PROXY                CORPORATE OFFICE PROPERTIES TRUST, INC.               PROXY
                        SPECIAL MEETING OF SHAREHOLDERS
                                 MARCH 12, 1998
 
       THIS PROXY IS BEING SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS
 
    The undersigned hereby appoints Jay H. Shidler and Clay W. Hamlin and each
of them, with full power of substitution, the proxies of the undersigned to vote
all of the shares of Common Stock of Corporate Office Properties Trust, Inc.
(the "Company") which the undersigned is entitled to vote at the Special Meeting
of Shareholders of Corporate Office Properties Trust, Inc. to be held at Room
803, Four Seasons Hotel, One Logen Square, Philadelphia, Pennsylvania on March
12, 1998 commencing at 10:30 a.m. and at any adjournment or adjournments
thereof, with all the powers the undersigned would possess if personally present
upon:
 
(1) APPROVAL OF THE REFORMATION: Authority to vote this proxy for the approval
    the reformation of the Company, in which the Company will be reformed as a
    Maryland real estate investment trust, which will be named Corporate Office
    Properties Trust, pursuant to two consecutive mergers, (a) of the Company
    into a newly formed, wholly owned subsidiary corporation of the Company and
    (b) of the former subsidiary corporation into a newly formed, wholly owned
    subsidiary Maryland real estate investment trust (the "Trust"), and the
    conversion of each outstanding share of common stock of the Company into one
    common share of beneficial interest of the Trust, which approval shall
    constitute approval of all the provisions set forth in the Declaration of
    Trust and the Bylaws of the Trust, including a classified board of trustees,
    the members of which are the same as the current directors of the Company,
    and the more flexible operational and investment policies permitted
    thereunder, as more fully described in the Proxy Statement/Prospectus dated
    February   , 1998 relating to the Special Meeting, is:
 
                   / /  GRANTED                  / /  WITHHELD
<PAGE>
(2) ADOPTION OF THE PLAN: Authority to vote this Proxy for the approval and
    adoption of the 1998 Long Term Incentive Plan, as more fully described in
    the Proxy Statement/Prospectus dated February , 1998 relating to the Special
    Meeting, is:
 
                   / /  GRANTED                  / /  WITHHELD
(3) In their discretion, such other matters as may properly come before the
    meeting.
 
    UNLESS A CONTRARY DIRECTION IS INDICATED, THE SHARES REPRESENTED BY THIS
PROXY SHALL BE VOTED FOR THE APPROVAL OF THE REFORMATION AND FOR THE APPROVAL
AND ADOPTION OF THE 1998 LONG TERM INCENTIVE PLAN.
 
                                              PLEASE SIGN EXACTLY AS YOUR NAME
                                              APPEARS ON THIS PROXY. IF SIGNING
                                              FOR ESTATES, TRUSTS OR
                                              CORPORATIONS, TITLE OR CAPACITY
                                              SHOULD BE STATED. IF SHARES ARE
                                              HELD JOINTLY, EACH HOLDER SHOULD
                                              SIGN.
 
                                              Dated: _____________________, 1998
 
                                              ----------------------------------
                                                          Signature
 
                                              ----------------------------------
                                                          Signature


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission